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/const1.i_3.bplTransformedIcfg_BEv2_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 00:25:25,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:25:25,435 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:25:25,450 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-01 00:25:25,450 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-01 00:25:25,451 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-01 00:25:25,453 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-01 00:25:25,456 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-01 00:25:25,458 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-01 00:25:25,459 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-01 00:25:25,467 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-01 00:25:25,467 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-01 00:25:25,468 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-01 00:25:25,469 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-01 00:25:25,473 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-01 00:25:25,474 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-01 00:25:25,475 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-01 00:25:25,477 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-01 00:25:25,482 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-01 00:25:25,484 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-01 00:25:25,485 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-01 00:25:25,491 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-01 00:25:25,497 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-01 00:25:25,498 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-01 00:25:25,498 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-01 00:25:25,499 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-01 00:25:25,501 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-01 00:25:25,501 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-01 00:25:25,502 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-01 00:25:25,505 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-01 00:25:25,506 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-01 00:25:25,506 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-01 00:25:25,507 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-01 00:25:25,507 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-01 00:25:25,509 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-01 00:25:25,509 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-01 00:25:25,510 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-01 00:25:25,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:25:25,538 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:25:25,539 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:25:25,539 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:25:25,539 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:25:25,540 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:25:25,540 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:25:25,540 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:25:25,540 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:25:25,540 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:25:25,541 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:25:25,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:25:25,541 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:25:25,541 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:25:25,542 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:25:25,543 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:25:25,543 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:25:25,543 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:25:25,543 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:25:25,544 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:25:25,545 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:25:25,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:25:25,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:25:25,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:25:25,545 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:25:25,546 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:25:25,546 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:25:25,546 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:25:25,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:25:25,546 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:25:25,547 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:25:25,597 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:25:25,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:25:25,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:25:25,614 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:25:25,615 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:25:25,616 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl [2018-10-01 00:25:25,616 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl' [2018-10-01 00:25:25,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:25:25,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:25:25,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:25:25,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:25:25,670 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:25:25,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... [2018-10-01 00:25:25,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... [2018-10-01 00:25:25,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:25:25,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:25:25,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:25:25,710 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:25:25,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... [2018-10-01 00:25:25,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... [2018-10-01 00:25:25,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... [2018-10-01 00:25:25,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... [2018-10-01 00:25:25,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... [2018-10-01 00:25:25,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... [2018-10-01 00:25:25,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... [2018-10-01 00:25:25,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:25:25,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:25:25,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:25:25,730 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:25:25,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:25:25,795 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-01 00:25:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-01 00:25:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-01 00:25:26,020 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-01 00:25:26,021 INFO L202 PluginConnector]: Adding new model const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:25:26 BoogieIcfgContainer [2018-10-01 00:25:26,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:25:26,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:25:26,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:25:26,026 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:25:26,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:25:25" (1/2) ... [2018-10-01 00:25:26,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8b61a1 and model type const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:25:26, skipping insertion in model container [2018-10-01 00:25:26,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:25:26" (2/2) ... [2018-10-01 00:25:26,031 INFO L112 eAbstractionObserver]: Analyzing ICFG const1.i_3.bplTransformedIcfg_BEv2_6.bpl [2018-10-01 00:25:26,041 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:25:26,049 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:25:26,097 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:25:26,098 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:25:26,098 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:25:26,098 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:25:26,098 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:25:26,098 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:25:26,099 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:25:26,099 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:25:26,099 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:25:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-01 00:25:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-01 00:25:26,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:26,120 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-01 00:25:26,121 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:26,128 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-10-01 00:25:26,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:26,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:26,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:26,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:26,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:26,273 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:25:26,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:25:26,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:25:26,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:25:26,290 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:26,292 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-01 00:25:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:26,379 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-01 00:25:26,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:25:26,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-01 00:25:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:26,402 INFO L225 Difference]: With dead ends: 9 [2018-10-01 00:25:26,402 INFO L226 Difference]: Without dead ends: 5 [2018-10-01 00:25:26,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:25:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-01 00:25:26,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-01 00:25:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-01 00:25:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-01 00:25:26,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-01 00:25:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:26,502 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-01 00:25:26,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:25:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-01 00:25:26,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-01 00:25:26,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:26,506 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-01 00:25:26,506 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:26,507 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:26,507 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-10-01 00:25:26,507 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:26,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:26,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:26,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:26,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:26,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:26,621 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:26,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:26,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:26,764 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:26,764 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-01 00:25:26,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:25:26,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:25:26,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:26,766 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-01 00:25:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:27,017 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-01 00:25:27,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:25:27,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-01 00:25:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:27,019 INFO L225 Difference]: With dead ends: 8 [2018-10-01 00:25:27,019 INFO L226 Difference]: Without dead ends: 6 [2018-10-01 00:25:27,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-01 00:25:27,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-01 00:25:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-01 00:25:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-01 00:25:27,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-01 00:25:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:27,023 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-01 00:25:27,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:25:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-01 00:25:27,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 00:25:27,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:27,024 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-01 00:25:27,024 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:27,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:27,024 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-10-01 00:25:27,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:27,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:27,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:27,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:27,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:27,123 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:27,123 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:27,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:27,154 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:27,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:27,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:27,200 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:27,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 00:25:27,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 00:25:27,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 00:25:27,201 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:27,201 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-01 00:25:27,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:27,377 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-01 00:25:27,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:25:27,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-01 00:25:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:27,379 INFO L225 Difference]: With dead ends: 9 [2018-10-01 00:25:27,379 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 00:25:27,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:25:27,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 00:25:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 00:25:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 00:25:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-01 00:25:27,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-01 00:25:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:27,382 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-01 00:25:27,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 00:25:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-01 00:25:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 00:25:27,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:27,386 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-01 00:25:27,386 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:27,386 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:27,386 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-10-01 00:25:27,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:27,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:27,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:27,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:27,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:27,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:27,581 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:27,593 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:27,609 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-01 00:25:27,609 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:27,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:27,670 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:27,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 00:25:27,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 00:25:27,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 00:25:27,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:27,671 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-01 00:25:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:27,783 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-01 00:25:27,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:25:27,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-01 00:25:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:27,785 INFO L225 Difference]: With dead ends: 10 [2018-10-01 00:25:27,785 INFO L226 Difference]: Without dead ends: 8 [2018-10-01 00:25:27,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-01 00:25:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-01 00:25:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-01 00:25:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-01 00:25:27,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-01 00:25:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:27,788 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-01 00:25:27,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 00:25:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-01 00:25:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 00:25:27,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:27,789 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-01 00:25:27,789 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:27,790 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:27,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-10-01 00:25:27,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:27,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:27,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:27,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:27,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:27,877 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:27,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:27,889 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:27,903 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:27,904 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:27,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:28,040 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:28,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 00:25:28,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 00:25:28,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 00:25:28,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:28,042 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-01 00:25:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:28,098 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 00:25:28,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 00:25:28,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-01 00:25:28,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:28,100 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:25:28,100 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 00:25:28,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 00:25:28,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 00:25:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 00:25:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-01 00:25:28,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-01 00:25:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:28,105 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-01 00:25:28,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 00:25:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-01 00:25:28,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:25:28,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:28,106 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-01 00:25:28,106 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:28,106 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:28,106 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-10-01 00:25:28,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:28,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:28,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:28,107 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:28,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:28,217 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:28,217 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:28,226 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:28,239 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-01 00:25:28,239 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:28,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:28,291 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:28,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 00:25:28,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:25:28,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:25:28,292 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:28,293 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-01 00:25:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:28,717 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-01 00:25:28,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 00:25:28,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-01 00:25:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:28,720 INFO L225 Difference]: With dead ends: 12 [2018-10-01 00:25:28,721 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 00:25:28,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 00:25:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 00:25:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 00:25:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-01 00:25:28,729 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-01 00:25:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:28,729 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-01 00:25:28,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:25:28,730 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-01 00:25:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-01 00:25:28,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:28,732 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-01 00:25:28,733 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:28,733 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:28,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-10-01 00:25:28,733 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:28,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:28,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:28,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:28,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:28,944 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:28,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:28,952 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:28,978 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-01 00:25:28,979 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:28,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:29,038 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:29,038 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-01 00:25:29,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 00:25:29,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 00:25:29,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:29,039 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-01 00:25:29,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:29,126 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 00:25:29,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 00:25:29,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-01 00:25:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:29,129 INFO L225 Difference]: With dead ends: 13 [2018-10-01 00:25:29,129 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 00:25:29,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 00:25:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 00:25:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 00:25:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 00:25:29,132 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-01 00:25:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:29,132 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 00:25:29,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 00:25:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 00:25:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 00:25:29,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:29,133 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-01 00:25:29,134 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:29,134 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:29,134 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-10-01 00:25:29,134 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:29,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:29,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:29,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:29,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:29,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:29,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:29,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:29,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:29,340 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:29,340 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 00:25:29,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:25:29,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:25:29,341 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:29,341 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-01 00:25:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:29,432 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-01 00:25:29,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 00:25:29,433 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-01 00:25:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:29,434 INFO L225 Difference]: With dead ends: 14 [2018-10-01 00:25:29,434 INFO L226 Difference]: Without dead ends: 12 [2018-10-01 00:25:29,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-01 00:25:29,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-01 00:25:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-01 00:25:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-01 00:25:29,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-01 00:25:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:29,439 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-01 00:25:29,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:25:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-01 00:25:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 00:25:29,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:29,440 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-01 00:25:29,440 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:29,440 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:29,440 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-10-01 00:25:29,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:29,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:29,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:29,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:29,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:29,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:29,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:29,683 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:29,704 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:29,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:29,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:29,804 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:29,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 00:25:29,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 00:25:29,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 00:25:29,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:29,806 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-01 00:25:29,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:29,971 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 00:25:29,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 00:25:29,974 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-01 00:25:29,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:29,975 INFO L225 Difference]: With dead ends: 15 [2018-10-01 00:25:29,975 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:25:29,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:25:29,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:25:29,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 00:25:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:25:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-01 00:25:29,979 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-01 00:25:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:29,979 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-01 00:25:29,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 00:25:29,979 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-01 00:25:29,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 00:25:29,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:29,980 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-01 00:25:29,980 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:29,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:29,980 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-10-01 00:25:29,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:29,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:29,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:29,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:29,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:30,155 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:30,155 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:30,164 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:30,184 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-01 00:25:30,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:30,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:30,259 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:30,259 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 00:25:30,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:25:30,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:25:30,260 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:30,260 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-01 00:25:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:30,346 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-01 00:25:30,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 00:25:30,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-01 00:25:30,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:30,347 INFO L225 Difference]: With dead ends: 16 [2018-10-01 00:25:30,347 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 00:25:30,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 00:25:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 00:25:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 00:25:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-01 00:25:30,351 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-01 00:25:30,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:30,351 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-01 00:25:30,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:25:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-01 00:25:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 00:25:30,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:30,352 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-01 00:25:30,353 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:30,353 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:30,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-10-01 00:25:30,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:30,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:30,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:30,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:30,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:30,495 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:30,496 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:30,505 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:30,532 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:30,532 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:30,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:30,600 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:30,600 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-01 00:25:30,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 00:25:30,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 00:25:30,601 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:30,602 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-01 00:25:30,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:30,710 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 00:25:30,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 00:25:30,711 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-01 00:25:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:30,712 INFO L225 Difference]: With dead ends: 17 [2018-10-01 00:25:30,712 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 00:25:30,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 00:25:30,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 00:25:30,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 00:25:30,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 00:25:30,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-01 00:25:30,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:30,716 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 00:25:30,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 00:25:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 00:25:30,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 00:25:30,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:30,717 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-01 00:25:30,718 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:30,718 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:30,718 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-10-01 00:25:30,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:30,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:30,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:30,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:30,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:30,830 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:30,830 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:30,839 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:30,864 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 00:25:30,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:30,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:30,949 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:30,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 00:25:30,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:25:30,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:25:30,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:30,950 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-01 00:25:31,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:31,049 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-01 00:25:31,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 00:25:31,050 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-01 00:25:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:31,051 INFO L225 Difference]: With dead ends: 18 [2018-10-01 00:25:31,051 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 00:25:31,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 00:25:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 00:25:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 00:25:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-01 00:25:31,055 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-01 00:25:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:31,055 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-01 00:25:31,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:25:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-01 00:25:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-01 00:25:31,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:31,056 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-01 00:25:31,056 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:31,056 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:31,057 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-10-01 00:25:31,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:31,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:31,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:31,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:31,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:31,161 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:31,161 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:31,169 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:31,189 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 00:25:31,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:31,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:31,247 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:31,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:31,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-01 00:25:31,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 00:25:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 00:25:31,274 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:31,274 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-01 00:25:31,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:31,412 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 00:25:31,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 00:25:31,412 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-01 00:25:31,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:31,413 INFO L225 Difference]: With dead ends: 19 [2018-10-01 00:25:31,413 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 00:25:31,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 00:25:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-01 00:25:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-01 00:25:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-01 00:25:31,417 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-01 00:25:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:31,417 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-01 00:25:31,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 00:25:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-01 00:25:31,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-01 00:25:31,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:31,418 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-01 00:25:31,418 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:31,418 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-10-01 00:25:31,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:31,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:31,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:31,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:31,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:31,525 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:31,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:31,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:31,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:31,630 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:31,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 00:25:31,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:25:31,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:25:31,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:31,631 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-01 00:25:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:31,895 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-01 00:25:31,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 00:25:31,896 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-01 00:25:31,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:31,897 INFO L225 Difference]: With dead ends: 20 [2018-10-01 00:25:31,897 INFO L226 Difference]: Without dead ends: 18 [2018-10-01 00:25:31,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:31,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-01 00:25:31,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-01 00:25:31,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-01 00:25:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-01 00:25:31,902 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-01 00:25:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:31,902 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-01 00:25:31,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:25:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-01 00:25:31,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 00:25:31,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:31,903 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-01 00:25:31,903 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:31,903 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:31,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-10-01 00:25:31,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:31,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:31,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:31,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:31,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:32,170 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:32,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:32,205 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:32,248 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:32,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:32,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:32,572 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:32,572 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 00:25:32,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 00:25:32,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 00:25:32,573 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:32,573 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-01 00:25:32,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:32,707 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 00:25:32,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 00:25:32,707 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-01 00:25:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:32,708 INFO L225 Difference]: With dead ends: 21 [2018-10-01 00:25:32,708 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 00:25:32,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:25:32,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 00:25:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 00:25:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 00:25:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-01 00:25:32,713 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-01 00:25:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:32,713 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-01 00:25:32,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 00:25:32,713 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-01 00:25:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 00:25:32,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:32,714 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-01 00:25:32,714 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:32,715 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:32,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-10-01 00:25:32,715 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:32,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:32,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:32,716 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:32,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:33,107 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:33,107 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:33,115 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:33,156 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-01 00:25:33,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:33,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:33,257 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:33,257 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 00:25:33,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:25:33,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:25:33,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:33,258 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-01 00:25:33,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:33,391 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-01 00:25:33,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 00:25:33,392 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-01 00:25:33,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:33,393 INFO L225 Difference]: With dead ends: 22 [2018-10-01 00:25:33,393 INFO L226 Difference]: Without dead ends: 20 [2018-10-01 00:25:33,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:25:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-01 00:25:33,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-01 00:25:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 00:25:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-01 00:25:33,398 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-01 00:25:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:33,398 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-01 00:25:33,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:25:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-01 00:25:33,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-01 00:25:33,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:33,399 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-01 00:25:33,400 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:33,400 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:33,400 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-10-01 00:25:33,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:33,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:33,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:33,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:33,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:33,540 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:33,540 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:33,550 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:33,579 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:33,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:33,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:33,931 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:33,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 00:25:33,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 00:25:33,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 00:25:33,931 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:33,932 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-01 00:25:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:34,144 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 00:25:34,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 00:25:34,145 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-01 00:25:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:34,146 INFO L225 Difference]: With dead ends: 23 [2018-10-01 00:25:34,146 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 00:25:34,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:25:34,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 00:25:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 00:25:34,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 00:25:34,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-01 00:25:34,149 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-01 00:25:34,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:34,149 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-01 00:25:34,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 00:25:34,149 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-01 00:25:34,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 00:25:34,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:34,150 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-01 00:25:34,150 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:34,150 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:34,150 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-10-01 00:25:34,150 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:34,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:34,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:34,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:34,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:34,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:34,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:34,289 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:34,307 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-01 00:25:34,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:34,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:34,438 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:34,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 00:25:34,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:25:34,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:25:34,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:34,439 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-01 00:25:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:34,564 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-01 00:25:34,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 00:25:34,565 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-01 00:25:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:34,566 INFO L225 Difference]: With dead ends: 24 [2018-10-01 00:25:34,566 INFO L226 Difference]: Without dead ends: 22 [2018-10-01 00:25:34,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:25:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-01 00:25:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-01 00:25:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-01 00:25:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-01 00:25:34,570 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-01 00:25:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:34,571 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-01 00:25:34,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:25:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-01 00:25:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-01 00:25:34,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:34,572 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-01 00:25:34,572 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:34,572 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:34,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-10-01 00:25:34,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:34,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:34,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:34,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:34,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:34,713 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:34,713 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:34,723 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:34,751 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-01 00:25:34,751 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:34,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:34,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:34,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-01 00:25:34,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 00:25:34,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 00:25:34,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:34,944 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-01 00:25:35,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:35,100 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 00:25:35,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 00:25:35,101 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-01 00:25:35,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:35,102 INFO L225 Difference]: With dead ends: 25 [2018-10-01 00:25:35,102 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 00:25:35,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:25:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 00:25:35,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 00:25:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 00:25:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-01 00:25:35,106 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-01 00:25:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:35,106 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-01 00:25:35,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 00:25:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-01 00:25:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 00:25:35,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:35,107 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-01 00:25:35,107 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:35,108 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:35,108 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-10-01 00:25:35,108 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:35,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:35,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:35,109 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:35,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:35,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:35,667 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:35,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:35,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:35,957 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:35,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 00:25:35,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:25:35,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:25:35,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:35,958 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-01 00:25:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:36,170 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-01 00:25:36,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 00:25:36,171 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-01 00:25:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:36,172 INFO L225 Difference]: With dead ends: 26 [2018-10-01 00:25:36,172 INFO L226 Difference]: Without dead ends: 24 [2018-10-01 00:25:36,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:25:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-01 00:25:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-01 00:25:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-01 00:25:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-01 00:25:36,176 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-01 00:25:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:36,176 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-01 00:25:36,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:25:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-01 00:25:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 00:25:36,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:36,177 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-01 00:25:36,178 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:36,178 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:36,178 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-10-01 00:25:36,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:36,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:36,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:36,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:36,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:36,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:36,493 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:36,500 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:36,518 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:36,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:36,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:36,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:36,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 00:25:36,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 00:25:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 00:25:36,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:36,580 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-01 00:25:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:36,719 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 00:25:36,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 00:25:36,720 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-01 00:25:36,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:36,721 INFO L225 Difference]: With dead ends: 27 [2018-10-01 00:25:36,721 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 00:25:36,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:25:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 00:25:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 00:25:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 00:25:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-01 00:25:36,725 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-01 00:25:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:36,725 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-01 00:25:36,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 00:25:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-01 00:25:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-01 00:25:36,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:36,726 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-01 00:25:36,726 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:36,726 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:36,726 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-10-01 00:25:36,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:36,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:36,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:36,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:36,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:36,918 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:36,918 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:36,927 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:36,952 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-01 00:25:36,953 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:36,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:37,292 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:37,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 00:25:37,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:25:37,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:25:37,293 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:37,293 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-01 00:25:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:37,662 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-01 00:25:37,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 00:25:37,664 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-01 00:25:37,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:37,664 INFO L225 Difference]: With dead ends: 28 [2018-10-01 00:25:37,664 INFO L226 Difference]: Without dead ends: 26 [2018-10-01 00:25:37,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:25:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-01 00:25:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-01 00:25:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-01 00:25:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-01 00:25:37,667 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-01 00:25:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:37,668 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-01 00:25:37,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:25:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-01 00:25:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-01 00:25:37,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:37,668 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-01 00:25:37,669 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:37,669 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:37,669 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-10-01 00:25:37,669 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:37,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:37,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:37,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:37,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:37,872 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:37,872 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:37,880 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:37,914 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:37,914 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:37,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:38,138 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:38,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-01 00:25:38,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 00:25:38,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 00:25:38,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:38,139 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-01 00:25:38,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:38,263 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 00:25:38,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 00:25:38,263 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-01 00:25:38,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:38,264 INFO L225 Difference]: With dead ends: 29 [2018-10-01 00:25:38,264 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 00:25:38,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:25:38,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 00:25:38,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-01 00:25:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 00:25:38,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-01 00:25:38,268 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-01 00:25:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:38,269 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-01 00:25:38,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 00:25:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-01 00:25:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 00:25:38,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:38,270 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-01 00:25:38,270 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:38,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:38,270 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-10-01 00:25:38,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:38,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:38,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:38,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:38,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:38,466 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:38,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:38,474 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:38,503 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-01 00:25:38,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:38,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:38,613 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:38,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 00:25:38,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:25:38,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:25:38,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:38,614 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-01 00:25:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:38,730 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-01 00:25:38,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 00:25:38,731 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-01 00:25:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:38,732 INFO L225 Difference]: With dead ends: 30 [2018-10-01 00:25:38,732 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 00:25:38,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:25:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 00:25:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-01 00:25:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-01 00:25:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-01 00:25:38,738 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-01 00:25:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:38,738 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-01 00:25:38,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:25:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-01 00:25:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-01 00:25:38,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:38,739 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-01 00:25:38,739 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:38,739 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:38,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-10-01 00:25:38,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:38,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:38,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:38,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:38,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:39,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:39,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:39,094 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:39,124 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 00:25:39,125 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:39,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:39,328 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:39,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-01 00:25:39,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 00:25:39,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 00:25:39,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:39,329 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-01 00:25:39,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:39,467 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 00:25:39,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 00:25:39,468 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-01 00:25:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:39,469 INFO L225 Difference]: With dead ends: 31 [2018-10-01 00:25:39,469 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 00:25:39,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:25:39,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 00:25:39,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 00:25:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 00:25:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-01 00:25:39,473 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-01 00:25:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:39,473 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-01 00:25:39,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 00:25:39,473 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-01 00:25:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 00:25:39,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:39,474 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-01 00:25:39,474 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:39,474 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:39,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-10-01 00:25:39,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:39,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:39,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:39,476 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:39,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:40,442 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:40,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:40,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:40,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:40,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:40,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 00:25:40,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:25:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:25:40,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:40,557 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-01 00:25:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:40,724 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-01 00:25:40,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 00:25:40,725 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-01 00:25:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:40,726 INFO L225 Difference]: With dead ends: 32 [2018-10-01 00:25:40,726 INFO L226 Difference]: Without dead ends: 30 [2018-10-01 00:25:40,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:25:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-01 00:25:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-01 00:25:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-01 00:25:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-01 00:25:40,730 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-01 00:25:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:40,730 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-01 00:25:40,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:25:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-01 00:25:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 00:25:40,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:40,731 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-01 00:25:40,731 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:40,731 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:40,731 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-10-01 00:25:40,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:40,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:40,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:40,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:40,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:41,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:41,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:41,110 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:41,135 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:41,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:41,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:41,209 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:41,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 00:25:41,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 00:25:41,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 00:25:41,210 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:41,210 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-01 00:25:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:41,432 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 00:25:41,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 00:25:41,433 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-01 00:25:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:41,433 INFO L225 Difference]: With dead ends: 33 [2018-10-01 00:25:41,434 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 00:25:41,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:25:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 00:25:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 00:25:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 00:25:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-01 00:25:41,438 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-01 00:25:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:41,439 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-01 00:25:41,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 00:25:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-01 00:25:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 00:25:41,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:41,440 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-01 00:25:41,440 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:41,440 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:41,440 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-10-01 00:25:41,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:41,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:41,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:41,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:41,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:41,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:41,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:41,675 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:41,700 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-01 00:25:41,700 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:41,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:41,824 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:41,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 00:25:41,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:25:41,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:25:41,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:41,825 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-01 00:25:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:41,998 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-01 00:25:41,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 00:25:41,999 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-01 00:25:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:41,999 INFO L225 Difference]: With dead ends: 34 [2018-10-01 00:25:42,000 INFO L226 Difference]: Without dead ends: 32 [2018-10-01 00:25:42,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:25:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-01 00:25:42,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-01 00:25:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-01 00:25:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-01 00:25:42,004 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-01 00:25:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:42,004 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-01 00:25:42,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:25:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-01 00:25:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-01 00:25:42,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:42,005 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-01 00:25:42,006 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:42,006 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:42,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-10-01 00:25:42,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:42,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:42,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:42,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:42,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:42,228 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:42,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:42,243 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:42,281 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:42,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:42,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:42,372 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:42,372 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 00:25:42,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 00:25:42,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 00:25:42,373 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:42,373 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-01 00:25:42,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:42,507 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 00:25:42,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 00:25:42,508 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-01 00:25:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:42,508 INFO L225 Difference]: With dead ends: 35 [2018-10-01 00:25:42,508 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 00:25:42,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:25:42,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 00:25:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-01 00:25:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-01 00:25:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-01 00:25:42,513 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-01 00:25:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:42,513 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-01 00:25:42,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 00:25:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-01 00:25:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 00:25:42,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:42,514 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-01 00:25:42,515 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:42,515 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:42,515 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-10-01 00:25:42,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:42,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:42,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:42,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:42,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:42,877 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:42,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:42,886 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:42,916 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-01 00:25:42,916 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:42,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:43,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:43,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 00:25:43,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:25:43,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:25:43,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:43,030 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-01 00:25:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:43,182 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-01 00:25:43,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 00:25:43,182 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-01 00:25:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:43,183 INFO L225 Difference]: With dead ends: 36 [2018-10-01 00:25:43,183 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 00:25:43,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:25:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 00:25:43,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-01 00:25:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 00:25:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-01 00:25:43,187 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-01 00:25:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:43,187 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-01 00:25:43,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:25:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-01 00:25:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 00:25:43,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:43,188 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-01 00:25:43,188 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:43,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:43,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-10-01 00:25:43,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:43,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:43,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:43,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:43,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:43,404 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:43,404 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:43,418 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:43,468 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-01 00:25:43,468 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:43,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:43,583 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:43,584 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-01 00:25:43,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 00:25:43,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 00:25:43,584 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:43,584 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-01 00:25:43,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:43,797 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 00:25:43,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 00:25:43,797 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-01 00:25:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:43,798 INFO L225 Difference]: With dead ends: 37 [2018-10-01 00:25:43,798 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 00:25:43,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:25:43,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 00:25:43,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-01 00:25:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 00:25:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-01 00:25:43,802 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-01 00:25:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:43,802 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-01 00:25:43,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 00:25:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-01 00:25:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 00:25:43,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:43,802 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-01 00:25:43,803 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:43,803 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-10-01 00:25:43,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:43,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:43,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:43,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:43,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:44,111 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:44,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:44,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:44,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:44,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:44,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 00:25:44,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:25:44,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:25:44,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:44,291 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-01 00:25:44,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:44,476 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-01 00:25:44,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 00:25:44,477 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-01 00:25:44,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:44,477 INFO L225 Difference]: With dead ends: 38 [2018-10-01 00:25:44,477 INFO L226 Difference]: Without dead ends: 36 [2018-10-01 00:25:44,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:25:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-01 00:25:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-01 00:25:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-01 00:25:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-01 00:25:44,481 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-01 00:25:44,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:44,482 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-01 00:25:44,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:25:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-01 00:25:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-01 00:25:44,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:44,482 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-01 00:25:44,483 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:44,483 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:44,483 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-10-01 00:25:44,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:44,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:44,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:44,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:44,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:44,735 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:44,735 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:44,742 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:44,772 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:44,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:44,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:44,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:44,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 00:25:44,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 00:25:44,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 00:25:44,878 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:44,878 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-01 00:25:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:45,105 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 00:25:45,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 00:25:45,106 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-01 00:25:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:45,106 INFO L225 Difference]: With dead ends: 39 [2018-10-01 00:25:45,106 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 00:25:45,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:25:45,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 00:25:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 00:25:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 00:25:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-01 00:25:45,110 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-01 00:25:45,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:45,110 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-01 00:25:45,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 00:25:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-01 00:25:45,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-01 00:25:45,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:45,111 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-01 00:25:45,111 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:45,112 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:45,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-10-01 00:25:45,112 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:45,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:45,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:45,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:45,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:45,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:45,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:45,646 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:45,689 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-01 00:25:45,690 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:45,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:45,837 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:45,837 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 00:25:45,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:25:45,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:25:45,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:45,838 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-01 00:25:46,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:46,071 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-01 00:25:46,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 00:25:46,072 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-01 00:25:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:46,072 INFO L225 Difference]: With dead ends: 40 [2018-10-01 00:25:46,072 INFO L226 Difference]: Without dead ends: 38 [2018-10-01 00:25:46,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:25:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-01 00:25:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-01 00:25:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-01 00:25:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-01 00:25:46,076 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-01 00:25:46,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:46,076 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-01 00:25:46,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:25:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-01 00:25:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-01 00:25:46,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:46,076 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-01 00:25:46,077 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:46,077 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:46,077 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-10-01 00:25:46,077 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:46,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:46,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:46,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:46,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:46,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:46,348 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:46,356 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:46,386 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:46,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:46,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:46,576 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:46,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 00:25:46,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 00:25:46,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 00:25:46,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:46,577 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-01 00:25:46,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:46,793 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 00:25:46,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 00:25:46,793 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-01 00:25:46,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:46,794 INFO L225 Difference]: With dead ends: 41 [2018-10-01 00:25:46,794 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 00:25:46,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:25:46,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 00:25:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-01 00:25:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 00:25:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-01 00:25:46,798 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-01 00:25:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:46,798 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-01 00:25:46,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 00:25:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-01 00:25:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 00:25:46,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:46,799 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-01 00:25:46,799 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:46,799 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:46,799 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-10-01 00:25:46,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:46,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:46,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:46,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:46,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:47,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:47,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:47,047 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:47,085 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-01 00:25:47,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:47,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:47,253 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:47,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 00:25:47,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:25:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:25:47,254 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:47,254 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-01 00:25:47,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:47,512 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-01 00:25:47,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 00:25:47,513 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-01 00:25:47,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:47,513 INFO L225 Difference]: With dead ends: 42 [2018-10-01 00:25:47,513 INFO L226 Difference]: Without dead ends: 40 [2018-10-01 00:25:47,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:25:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-01 00:25:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-01 00:25:47,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 00:25:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-01 00:25:47,517 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-01 00:25:47,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:47,517 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-01 00:25:47,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:25:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-01 00:25:47,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-01 00:25:47,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:47,517 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-01 00:25:47,518 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:47,518 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:47,518 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-10-01 00:25:47,518 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:47,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:47,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:47,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:47,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:47,800 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:47,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:47,808 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:47,852 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 00:25:47,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:47,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:48,888 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:48,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-01 00:25:48,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 00:25:48,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 00:25:48,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:48,890 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-01 00:25:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:49,586 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 00:25:49,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 00:25:49,587 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-01 00:25:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:49,587 INFO L225 Difference]: With dead ends: 43 [2018-10-01 00:25:49,587 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 00:25:49,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:25:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 00:25:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 00:25:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 00:25:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-01 00:25:49,589 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-01 00:25:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:49,590 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-01 00:25:49,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 00:25:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-01 00:25:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-01 00:25:49,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:49,590 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-01 00:25:49,591 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:49,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:49,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-10-01 00:25:49,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:49,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:49,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:49,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:49,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:49,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:49,802 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:49,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:49,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:50,009 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:50,010 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 00:25:50,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:25:50,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:25:50,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:50,010 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-01 00:25:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:50,286 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-01 00:25:50,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 00:25:50,287 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-01 00:25:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:50,287 INFO L225 Difference]: With dead ends: 44 [2018-10-01 00:25:50,288 INFO L226 Difference]: Without dead ends: 42 [2018-10-01 00:25:50,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:25:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-01 00:25:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-01 00:25:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-01 00:25:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-01 00:25:50,290 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-01 00:25:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:50,291 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-01 00:25:50,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:25:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-01 00:25:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-01 00:25:50,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:50,291 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-01 00:25:50,292 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:50,292 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:50,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-10-01 00:25:50,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:50,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:50,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:50,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:50,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:50,851 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:50,851 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:50,858 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:50,891 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:50,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:50,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:50,993 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:50,993 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 00:25:50,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 00:25:50,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 00:25:50,994 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:50,994 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-01 00:25:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:51,245 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 00:25:51,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 00:25:51,245 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-01 00:25:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:51,246 INFO L225 Difference]: With dead ends: 45 [2018-10-01 00:25:51,246 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 00:25:51,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:25:51,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 00:25:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 00:25:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 00:25:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-01 00:25:51,250 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-01 00:25:51,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:51,250 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-01 00:25:51,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 00:25:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-01 00:25:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 00:25:51,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:51,251 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-01 00:25:51,251 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:51,252 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-10-01 00:25:51,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:51,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:51,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:51,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:51,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:51,560 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:51,560 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:51,567 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:51,608 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-01 00:25:51,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:51,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:51,700 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:51,701 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 00:25:51,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:25:51,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:25:51,701 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:51,701 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-01 00:25:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:51,927 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-01 00:25:51,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 00:25:51,928 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-01 00:25:51,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:51,928 INFO L225 Difference]: With dead ends: 46 [2018-10-01 00:25:51,928 INFO L226 Difference]: Without dead ends: 44 [2018-10-01 00:25:51,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:25:51,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-01 00:25:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-01 00:25:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-01 00:25:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-01 00:25:51,931 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-01 00:25:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:51,931 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-01 00:25:51,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:25:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-01 00:25:51,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 00:25:51,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:51,932 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-01 00:25:51,932 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:51,932 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:51,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-10-01 00:25:51,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:51,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:51,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:51,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:51,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:52,199 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:52,199 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:52,206 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:52,264 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:52,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:52,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:52,635 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:52,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 00:25:52,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 00:25:52,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 00:25:52,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:52,636 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-01 00:25:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:52,938 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 00:25:52,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 00:25:52,939 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-01 00:25:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:52,940 INFO L225 Difference]: With dead ends: 47 [2018-10-01 00:25:52,940 INFO L226 Difference]: Without dead ends: 45 [2018-10-01 00:25:52,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:25:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-01 00:25:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-01 00:25:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 00:25:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-01 00:25:52,943 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-01 00:25:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:52,943 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-01 00:25:52,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 00:25:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-01 00:25:52,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 00:25:52,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:52,944 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-01 00:25:52,944 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:52,945 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:52,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-10-01 00:25:52,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:52,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:52,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:52,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:52,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:54,203 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:54,203 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:54,211 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:54,260 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-01 00:25:54,260 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:54,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:54,452 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:54,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 00:25:54,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:25:54,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:25:54,452 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:54,453 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-01 00:25:55,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:55,047 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-01 00:25:55,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 00:25:55,047 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-01 00:25:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:55,048 INFO L225 Difference]: With dead ends: 48 [2018-10-01 00:25:55,048 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 00:25:55,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:25:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 00:25:55,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 00:25:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 00:25:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-01 00:25:55,050 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-01 00:25:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:55,051 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-01 00:25:55,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:25:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-01 00:25:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-01 00:25:55,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:55,051 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-01 00:25:55,051 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:55,051 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-10-01 00:25:55,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:55,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:55,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:55,052 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:55,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:56,160 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:56,161 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:56,168 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:56,211 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-01 00:25:56,212 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:56,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:56,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:56,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-01 00:25:56,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 00:25:56,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 00:25:56,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:56,334 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-01 00:25:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:56,606 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 00:25:56,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 00:25:56,607 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-01 00:25:56,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:56,608 INFO L225 Difference]: With dead ends: 49 [2018-10-01 00:25:56,608 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 00:25:56,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:25:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 00:25:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 00:25:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 00:25:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-01 00:25:56,610 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-01 00:25:56,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:56,611 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-01 00:25:56,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 00:25:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-01 00:25:56,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 00:25:56,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:56,611 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-01 00:25:56,612 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:56,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:56,612 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-10-01 00:25:56,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:56,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:56,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:56,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:56,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:57,077 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:57,078 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:57,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:57,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:57,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:57,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 00:25:57,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:25:57,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:25:57,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:57,241 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-01 00:25:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:57,512 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-01 00:25:57,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 00:25:57,513 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-01 00:25:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:57,513 INFO L225 Difference]: With dead ends: 50 [2018-10-01 00:25:57,513 INFO L226 Difference]: Without dead ends: 48 [2018-10-01 00:25:57,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:25:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-01 00:25:57,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-01 00:25:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-01 00:25:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-01 00:25:57,517 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-01 00:25:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:57,517 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-01 00:25:57,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:25:57,518 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-01 00:25:57,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 00:25:57,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:57,518 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-01 00:25:57,518 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:57,519 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:57,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-10-01 00:25:57,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:57,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:57,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:57,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:57,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:57,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:57,757 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:57,765 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:57,799 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:57,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:57,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:57,921 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:57,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 00:25:57,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 00:25:57,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 00:25:57,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:57,922 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-01 00:25:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:58,260 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 00:25:58,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 00:25:58,261 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-01 00:25:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:58,261 INFO L225 Difference]: With dead ends: 51 [2018-10-01 00:25:58,261 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 00:25:58,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:25:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 00:25:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 00:25:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 00:25:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-01 00:25:58,263 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-01 00:25:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:58,263 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-01 00:25:58,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 00:25:58,264 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-01 00:25:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 00:25:58,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:58,265 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-01 00:25:58,265 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:58,265 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:58,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-10-01 00:25:58,266 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:58,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:58,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:58,267 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:58,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:58,593 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:58,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:58,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:58,647 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-01 00:25:58,647 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:58,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:58,800 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:58,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 00:25:58,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:25:58,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:25:58,800 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:58,801 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-01 00:25:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:59,245 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-01 00:25:59,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 00:25:59,246 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-01 00:25:59,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:59,247 INFO L225 Difference]: With dead ends: 52 [2018-10-01 00:25:59,247 INFO L226 Difference]: Without dead ends: 50 [2018-10-01 00:25:59,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:25:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-01 00:25:59,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-01 00:25:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 00:25:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-01 00:25:59,249 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-01 00:25:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:59,250 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-01 00:25:59,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:25:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-01 00:25:59,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-01 00:25:59,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:59,250 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-01 00:25:59,250 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:59,251 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:59,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-10-01 00:25:59,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:59,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:59,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:59,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:59,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:59,699 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:59,699 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:59,706 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:59,743 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:59,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:59,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:59,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:59,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-01 00:25:59,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 00:25:59,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 00:25:59,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:59,870 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-01 00:26:00,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:00,166 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 00:26:00,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 00:26:00,167 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-01 00:26:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:00,168 INFO L225 Difference]: With dead ends: 53 [2018-10-01 00:26:00,168 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 00:26:00,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 00:26:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 00:26:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 00:26:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-01 00:26:00,170 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-01 00:26:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:00,171 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-01 00:26:00,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 00:26:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-01 00:26:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 00:26:00,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:00,172 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-01 00:26:00,172 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:00,172 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:00,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-10-01 00:26:00,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:00,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:00,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:00,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:00,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:00,681 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:00,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:00,689 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:00,749 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-01 00:26:00,750 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:00,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:00,876 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:00,876 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 00:26:00,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:26:00,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:26:00,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:00,877 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-01 00:26:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:01,155 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-01 00:26:01,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 00:26:01,155 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-01 00:26:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:01,156 INFO L225 Difference]: With dead ends: 54 [2018-10-01 00:26:01,156 INFO L226 Difference]: Without dead ends: 52 [2018-10-01 00:26:01,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-01 00:26:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-01 00:26:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-01 00:26:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-01 00:26:01,160 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-01 00:26:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:01,160 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-01 00:26:01,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:26:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-01 00:26:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-01 00:26:01,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:01,161 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-01 00:26:01,161 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:01,161 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:01,161 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-10-01 00:26:01,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:01,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:01,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:01,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:01,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:01,436 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:01,436 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:01,444 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:01,490 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 00:26:01,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:01,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:01,605 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:01,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-01 00:26:01,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 00:26:01,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 00:26:01,606 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:01,606 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-01 00:26:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:01,846 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 00:26:01,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 00:26:01,846 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-01 00:26:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:01,847 INFO L225 Difference]: With dead ends: 55 [2018-10-01 00:26:01,847 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 00:26:01,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:01,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 00:26:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-01 00:26:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-01 00:26:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-01 00:26:01,852 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-01 00:26:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:01,852 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-01 00:26:01,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 00:26:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-01 00:26:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 00:26:01,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:01,853 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-01 00:26:01,853 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:01,853 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:01,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-10-01 00:26:01,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:01,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:01,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:01,854 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:01,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:02,171 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:02,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:02,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:02,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:02,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:02,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 00:26:02,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:26:02,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:26:02,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:02,369 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-01 00:26:02,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:02,613 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-01 00:26:02,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 00:26:02,614 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-01 00:26:02,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:02,615 INFO L225 Difference]: With dead ends: 56 [2018-10-01 00:26:02,615 INFO L226 Difference]: Without dead ends: 54 [2018-10-01 00:26:02,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-01 00:26:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-01 00:26:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-01 00:26:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-01 00:26:02,618 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-01 00:26:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:02,619 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-01 00:26:02,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:26:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-01 00:26:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 00:26:02,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:02,619 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-01 00:26:02,619 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:02,620 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:02,620 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-10-01 00:26:02,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:02,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:02,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:02,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:02,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:02,921 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:02,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:02,930 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:02,970 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:02,970 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:02,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:03,098 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:03,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 00:26:03,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 00:26:03,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 00:26:03,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:03,099 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-01 00:26:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:03,360 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 00:26:03,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 00:26:03,360 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-01 00:26:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:03,361 INFO L225 Difference]: With dead ends: 57 [2018-10-01 00:26:03,361 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 00:26:03,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:03,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 00:26:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 00:26:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 00:26:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-01 00:26:03,364 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-01 00:26:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:03,364 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-01 00:26:03,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 00:26:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-01 00:26:03,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 00:26:03,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:03,365 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-01 00:26:03,365 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:03,365 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:03,365 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-10-01 00:26:03,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:03,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:03,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:03,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:03,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:03,694 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:03,694 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:03,701 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:03,753 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-01 00:26:03,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:03,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:03,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:03,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 00:26:03,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:26:03,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:26:03,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:03,945 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-01 00:26:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:04,383 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-01 00:26:04,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 00:26:04,384 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-01 00:26:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:04,384 INFO L225 Difference]: With dead ends: 58 [2018-10-01 00:26:04,384 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 00:26:04,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 00:26:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 00:26:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 00:26:04,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-01 00:26:04,388 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-01 00:26:04,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:04,388 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-01 00:26:04,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:26:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-01 00:26:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-01 00:26:04,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:04,389 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-01 00:26:04,389 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:04,389 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:04,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-10-01 00:26:04,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:04,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:04,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:04,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:04,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:04,892 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:04,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:04,900 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:04,941 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:04,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:04,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:05,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:05,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 00:26:05,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 00:26:05,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 00:26:05,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:05,059 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-01 00:26:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:05,401 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 00:26:05,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 00:26:05,401 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-01 00:26:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:05,402 INFO L225 Difference]: With dead ends: 59 [2018-10-01 00:26:05,402 INFO L226 Difference]: Without dead ends: 57 [2018-10-01 00:26:05,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-01 00:26:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-01 00:26:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-01 00:26:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-01 00:26:05,404 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-01 00:26:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:05,405 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-01 00:26:05,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 00:26:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-01 00:26:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 00:26:05,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:05,405 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-01 00:26:05,406 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:05,406 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:05,406 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-10-01 00:26:05,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:05,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:05,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:05,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:05,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:05,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:05,684 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:05,691 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:05,746 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-01 00:26:05,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:05,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:05,921 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:05,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 00:26:05,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:26:05,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:26:05,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:05,922 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-01 00:26:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:06,289 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-01 00:26:06,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 00:26:06,289 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-01 00:26:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:06,290 INFO L225 Difference]: With dead ends: 60 [2018-10-01 00:26:06,290 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 00:26:06,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:06,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 00:26:06,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-01 00:26:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-01 00:26:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-01 00:26:06,293 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-01 00:26:06,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:06,293 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-01 00:26:06,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:26:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-01 00:26:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-01 00:26:06,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:06,294 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-01 00:26:06,294 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:06,294 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-10-01 00:26:06,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:06,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:06,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:06,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:06,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:06,593 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:06,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:06,602 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:06,654 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-01 00:26:06,655 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:06,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:06,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:06,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-01 00:26:06,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 00:26:06,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 00:26:06,878 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:06,878 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-01 00:26:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:07,191 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 00:26:07,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 00:26:07,191 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-01 00:26:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:07,192 INFO L225 Difference]: With dead ends: 61 [2018-10-01 00:26:07,192 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 00:26:07,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:07,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 00:26:07,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 00:26:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 00:26:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-01 00:26:07,194 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-01 00:26:07,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:07,194 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-01 00:26:07,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 00:26:07,195 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-01 00:26:07,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 00:26:07,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:07,196 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-01 00:26:07,196 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:07,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:07,196 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-10-01 00:26:07,196 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:07,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:07,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:07,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:07,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:07,631 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:07,631 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:07,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:07,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:07,807 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:07,807 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 00:26:07,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:26:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:26:07,808 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:07,808 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-01 00:26:08,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:08,176 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-01 00:26:08,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 00:26:08,176 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-01 00:26:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:08,177 INFO L225 Difference]: With dead ends: 62 [2018-10-01 00:26:08,177 INFO L226 Difference]: Without dead ends: 60 [2018-10-01 00:26:08,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-01 00:26:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-01 00:26:08,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-01 00:26:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-01 00:26:08,181 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-01 00:26:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:08,181 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-01 00:26:08,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:26:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-01 00:26:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-01 00:26:08,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:08,182 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-01 00:26:08,182 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:08,182 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:08,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-10-01 00:26:08,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:08,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:08,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:08,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:08,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:08,484 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:08,484 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:08,492 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:08,535 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:08,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:08,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:08,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:08,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 00:26:08,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 00:26:08,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 00:26:08,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:08,683 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-01 00:26:09,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:09,034 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 00:26:09,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 00:26:09,034 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-01 00:26:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:09,035 INFO L225 Difference]: With dead ends: 63 [2018-10-01 00:26:09,035 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 00:26:09,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:09,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 00:26:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 00:26:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 00:26:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-01 00:26:09,038 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-01 00:26:09,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:09,038 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-01 00:26:09,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 00:26:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-01 00:26:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-01 00:26:09,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:09,039 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-01 00:26:09,039 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:09,039 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-10-01 00:26:09,039 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:09,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:09,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:09,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:09,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:09,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:09,964 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:09,970 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:10,031 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-01 00:26:10,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:10,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:10,207 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:10,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 00:26:10,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:26:10,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:26:10,208 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:10,208 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-01 00:26:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:10,572 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-01 00:26:10,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 00:26:10,572 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-01 00:26:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:10,573 INFO L225 Difference]: With dead ends: 64 [2018-10-01 00:26:10,573 INFO L226 Difference]: Without dead ends: 62 [2018-10-01 00:26:10,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:26:10,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-01 00:26:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-01 00:26:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-01 00:26:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-01 00:26:10,575 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-01 00:26:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:10,576 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-01 00:26:10,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:26:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-01 00:26:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-01 00:26:10,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:10,577 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-01 00:26:10,577 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:10,577 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:10,577 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-10-01 00:26:10,577 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:10,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:10,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:10,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:10,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:11,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:11,140 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:11,149 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:11,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:11,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:11,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:11,325 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:11,326 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 00:26:11,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 00:26:11,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 00:26:11,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:11,327 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-01 00:26:11,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:11,693 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 00:26:11,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 00:26:11,694 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-01 00:26:11,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:11,695 INFO L225 Difference]: With dead ends: 65 [2018-10-01 00:26:11,695 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 00:26:11,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:26:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 00:26:11,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-01 00:26:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 00:26:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-01 00:26:11,697 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-01 00:26:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:11,697 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-01 00:26:11,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 00:26:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-01 00:26:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 00:26:11,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:11,698 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-01 00:26:11,698 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:11,698 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:11,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-10-01 00:26:11,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:11,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:11,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:11,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:11,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:13,203 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:13,203 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:13,211 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:13,276 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-01 00:26:13,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:13,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:13,506 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:13,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 00:26:13,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:26:13,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:26:13,507 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:13,508 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-01 00:26:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:13,908 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-01 00:26:13,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 00:26:13,908 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-01 00:26:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:13,909 INFO L225 Difference]: With dead ends: 66 [2018-10-01 00:26:13,909 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 00:26:13,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:26:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 00:26:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-01 00:26:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 00:26:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-01 00:26:13,912 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-01 00:26:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:13,912 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-01 00:26:13,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:26:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-01 00:26:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 00:26:13,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:13,912 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-01 00:26:13,913 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:13,913 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:13,913 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-10-01 00:26:13,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:13,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:13,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:13,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:13,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:14,217 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:14,217 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:14,224 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:14,286 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 00:26:14,286 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:14,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:14,428 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:14,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-01 00:26:14,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 00:26:14,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 00:26:14,429 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:14,429 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-01 00:26:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:14,896 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 00:26:14,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 00:26:14,896 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-01 00:26:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:14,897 INFO L225 Difference]: With dead ends: 67 [2018-10-01 00:26:14,897 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 00:26:14,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:26:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 00:26:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 00:26:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 00:26:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-01 00:26:14,898 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-01 00:26:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:14,899 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-01 00:26:14,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 00:26:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-01 00:26:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-01 00:26:14,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:14,899 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-01 00:26:14,899 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:14,900 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:14,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-10-01 00:26:14,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:14,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:14,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:14,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:14,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:15,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:15,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:15,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:15,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:15,465 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:15,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 00:26:15,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:26:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:26:15,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:15,466 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-01 00:26:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:15,774 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-01 00:26:15,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 00:26:15,774 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-01 00:26:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:15,775 INFO L225 Difference]: With dead ends: 68 [2018-10-01 00:26:15,775 INFO L226 Difference]: Without dead ends: 66 [2018-10-01 00:26:15,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-01 00:26:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-01 00:26:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-01 00:26:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-01 00:26:15,777 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-01 00:26:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:15,777 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-01 00:26:15,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:26:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-01 00:26:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 00:26:15,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:15,778 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-01 00:26:15,778 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:15,778 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-10-01 00:26:15,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:15,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:15,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:15,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:15,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:16,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:16,290 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 [2018-10-01 00:26:16,299 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:16,349 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:16,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:16,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:16,491 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:16,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 00:26:16,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 00:26:16,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 00:26:16,493 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:16,493 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-01 00:26:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:16,905 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 00:26:16,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 00:26:16,906 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-01 00:26:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:16,906 INFO L225 Difference]: With dead ends: 69 [2018-10-01 00:26:16,906 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 00:26:16,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 00:26:16,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 00:26:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 00:26:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-01 00:26:16,908 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-01 00:26:16,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:16,909 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-01 00:26:16,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 00:26:16,909 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-01 00:26:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 00:26:16,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:16,909 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-01 00:26:16,909 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:16,909 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:16,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-10-01 00:26:16,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:16,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:16,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:16,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:16,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:17,798 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:17,798 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:17,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:17,877 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-01 00:26:17,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:17,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:18,134 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:18,135 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 00:26:18,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:26:18,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:26:18,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:18,136 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-01 00:26:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:18,698 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-01 00:26:18,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 00:26:18,700 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-01 00:26:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:18,701 INFO L225 Difference]: With dead ends: 70 [2018-10-01 00:26:18,701 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 00:26:18,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:26:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 00:26:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-01 00:26:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-01 00:26:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-01 00:26:18,703 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-01 00:26:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:18,703 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-01 00:26:18,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:26:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-01 00:26:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-01 00:26:18,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:18,704 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-01 00:26:18,704 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:18,704 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:18,705 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-10-01 00:26:18,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:18,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:18,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:18,706 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:18,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:19,053 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:19,053 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:19,069 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:19,130 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:19,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:19,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:19,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:19,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 00:26:19,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 00:26:19,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 00:26:19,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:19,275 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-01 00:26:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:19,710 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 00:26:19,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 00:26:19,710 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-01 00:26:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:19,711 INFO L225 Difference]: With dead ends: 71 [2018-10-01 00:26:19,711 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 00:26:19,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:19,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 00:26:19,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-01 00:26:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 00:26:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-01 00:26:19,713 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-01 00:26:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:19,714 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-01 00:26:19,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 00:26:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-01 00:26:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 00:26:19,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:19,714 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-01 00:26:19,715 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:19,715 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:19,715 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-10-01 00:26:19,715 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:19,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:19,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:19,716 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:19,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:20,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:20,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:20,714 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:20,783 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-01 00:26:20,783 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:20,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:21,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:21,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 00:26:21,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:26:21,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:26:21,005 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:21,005 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-01 00:26:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:21,426 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-01 00:26:21,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 00:26:21,427 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-01 00:26:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:21,427 INFO L225 Difference]: With dead ends: 72 [2018-10-01 00:26:21,427 INFO L226 Difference]: Without dead ends: 70 [2018-10-01 00:26:21,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:26:21,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-01 00:26:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-01 00:26:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 00:26:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-01 00:26:21,430 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-01 00:26:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:21,430 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-01 00:26:21,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:26:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-01 00:26:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-01 00:26:21,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:21,431 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-01 00:26:21,431 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:21,431 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:21,431 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-10-01 00:26:21,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:21,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:21,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:21,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:21,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:21,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:21,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:21,772 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:21,839 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-01 00:26:21,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:21,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:22,135 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:22,135 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-01 00:26:22,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 00:26:22,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 00:26:22,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:22,136 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-01 00:26:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:22,412 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 00:26:22,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 00:26:22,412 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-01 00:26:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:22,413 INFO L225 Difference]: With dead ends: 73 [2018-10-01 00:26:22,413 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 00:26:22,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 00:26:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 00:26:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 00:26:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-01 00:26:22,415 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-01 00:26:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:22,415 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-01 00:26:22,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 00:26:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-01 00:26:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 00:26:22,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:22,416 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-01 00:26:22,416 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:22,416 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:22,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-10-01 00:26:22,416 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:22,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:22,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:22,417 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:22,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:22,743 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:22,743 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:22,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:22,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:22,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:22,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 00:26:22,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 00:26:22,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 00:26:22,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:22,961 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-01 00:26:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:23,420 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-01 00:26:23,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 00:26:23,421 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-01 00:26:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:23,421 INFO L225 Difference]: With dead ends: 74 [2018-10-01 00:26:23,421 INFO L226 Difference]: Without dead ends: 72 [2018-10-01 00:26:23,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-01 00:26:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-01 00:26:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-01 00:26:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-01 00:26:23,424 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-01 00:26:23,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:23,424 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-01 00:26:23,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 00:26:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-01 00:26:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-01 00:26:23,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:23,425 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-01 00:26:23,425 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:23,425 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:23,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-10-01 00:26:23,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:23,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:23,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:23,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:23,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:23,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:23,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:23,809 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:23,863 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:23,863 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:23,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:24,015 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:24,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 00:26:24,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 00:26:24,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 00:26:24,016 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:24,016 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-01 00:26:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:24,335 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 00:26:24,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 00:26:24,335 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-01 00:26:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:24,336 INFO L225 Difference]: With dead ends: 75 [2018-10-01 00:26:24,336 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 00:26:24,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 00:26:24,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 00:26:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 00:26:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-01 00:26:24,338 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-01 00:26:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:24,338 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-01 00:26:24,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 00:26:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-01 00:26:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 00:26:24,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:24,339 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-01 00:26:24,339 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:24,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:24,339 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-10-01 00:26:24,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:24,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:24,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:24,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:24,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:24,690 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:24,690 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:24,697 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:24,786 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-01 00:26:24,786 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:24,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:26,599 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:26,600 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 00:26:26,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:26:26,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:26:26,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:26,601 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-01 00:26:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:27,074 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-01 00:26:27,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 00:26:27,074 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-01 00:26:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:27,075 INFO L225 Difference]: With dead ends: 76 [2018-10-01 00:26:27,075 INFO L226 Difference]: Without dead ends: 74 [2018-10-01 00:26:27,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:26:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-01 00:26:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-01 00:26:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-01 00:26:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-01 00:26:27,079 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-01 00:26:27,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:27,079 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-01 00:26:27,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:26:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-01 00:26:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 00:26:27,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:27,080 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-01 00:26:27,080 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:27,080 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:27,081 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-10-01 00:26:27,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:27,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:27,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:27,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:27,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:28,418 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:28,418 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:28,425 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:28,490 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:28,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:28,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:28,653 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:28,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 00:26:28,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 00:26:28,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 00:26:28,655 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:28,655 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-01 00:26:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:29,002 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 00:26:29,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 00:26:29,002 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-01 00:26:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:29,003 INFO L225 Difference]: With dead ends: 77 [2018-10-01 00:26:29,003 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 00:26:29,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:26:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 00:26:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-01 00:26:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 00:26:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-01 00:26:29,006 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-01 00:26:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:29,006 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-01 00:26:29,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 00:26:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-01 00:26:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 00:26:29,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:29,007 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-01 00:26:29,007 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:29,007 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:29,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-10-01 00:26:29,007 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:29,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:29,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:29,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:29,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:29,404 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:29,404 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:29,411 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:29,489 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 00:26:29,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:29,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:29,882 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:29,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 00:26:29,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:26:29,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:26:29,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:29,883 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-01 00:26:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:30,545 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-01 00:26:30,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 00:26:30,545 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-01 00:26:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:30,546 INFO L225 Difference]: With dead ends: 78 [2018-10-01 00:26:30,546 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 00:26:30,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:26:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 00:26:30,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 00:26:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 00:26:30,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-01 00:26:30,550 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-01 00:26:30,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:30,551 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-01 00:26:30,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:26:30,551 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-01 00:26:30,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-01 00:26:30,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:30,551 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-01 00:26:30,552 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:30,552 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash 881630595, now seen corresponding path program 72 times [2018-10-01 00:26:30,552 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:30,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:30,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:30,553 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:30,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:31,060 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:31,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:31,067 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:31,143 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 00:26:31,143 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:31,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:31,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:31,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-01 00:26:31,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 00:26:31,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 00:26:31,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:31,354 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-01 00:26:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:31,827 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 00:26:31,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 00:26:31,827 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-01 00:26:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:31,828 INFO L225 Difference]: With dead ends: 79 [2018-10-01 00:26:31,828 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 00:26:31,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:26:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 00:26:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 00:26:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 00:26:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-01 00:26:31,830 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-01 00:26:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:31,830 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-01 00:26:31,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 00:26:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-01 00:26:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-01 00:26:31,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:31,831 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-01 00:26:31,831 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:31,831 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:31,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1560746476, now seen corresponding path program 73 times [2018-10-01 00:26:31,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:31,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:31,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:31,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:31,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:32,204 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:32,204 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:32,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:32,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:32,439 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:32,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 00:26:32,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:26:32,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:26:32,440 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:32,441 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-01 00:26:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:32,922 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-01 00:26:32,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 00:26:32,922 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-01 00:26:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:32,923 INFO L225 Difference]: With dead ends: 80 [2018-10-01 00:26:32,923 INFO L226 Difference]: Without dead ends: 78 [2018-10-01 00:26:32,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:32,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-01 00:26:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-01 00:26:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-01 00:26:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-01 00:26:32,925 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-01 00:26:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:32,925 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-01 00:26:32,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:26:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-01 00:26:32,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 00:26:32,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:32,926 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-01 00:26:32,927 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:32,927 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:32,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1138502307, now seen corresponding path program 74 times [2018-10-01 00:26:32,927 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:32,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:32,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:32,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:32,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:33,340 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:33,340 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:33,348 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:33,412 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:33,412 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:33,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:33,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:33,596 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 00:26:33,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 00:26:33,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 00:26:33,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:33,597 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-01 00:26:34,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:34,065 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 00:26:34,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 00:26:34,065 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-01 00:26:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:34,065 INFO L225 Difference]: With dead ends: 81 [2018-10-01 00:26:34,066 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 00:26:34,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 00:26:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-01 00:26:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 00:26:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-01 00:26:34,068 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-01 00:26:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:34,068 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-01 00:26:34,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 00:26:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-01 00:26:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 00:26:34,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:34,069 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-01 00:26:34,069 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:34,069 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:34,069 INFO L82 PathProgramCache]: Analyzing trace with hash 933834956, now seen corresponding path program 75 times [2018-10-01 00:26:34,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:34,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:34,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:34,070 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:34,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:34,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:34,441 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:34,448 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:34,527 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-01 00:26:34,527 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:34,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:35,169 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:35,170 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 00:26:35,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 00:26:35,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 00:26:35,171 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:35,171 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-01 00:26:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:36,098 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-01 00:26:36,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 00:26:36,098 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-01 00:26:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:36,099 INFO L225 Difference]: With dead ends: 82 [2018-10-01 00:26:36,099 INFO L226 Difference]: Without dead ends: 80 [2018-10-01 00:26:36,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:26:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-01 00:26:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-01 00:26:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-01 00:26:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-01 00:26:36,101 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-01 00:26:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:36,102 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-01 00:26:36,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 00:26:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-01 00:26:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-01 00:26:36,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:36,102 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-01 00:26:36,102 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:36,102 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:36,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1115885629, now seen corresponding path program 76 times [2018-10-01 00:26:36,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:36,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:36,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:36,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:36,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:36,498 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:36,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:36,506 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:36,574 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:36,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:36,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:36,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:36,745 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-01 00:26:36,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-01 00:26:36,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-01 00:26:36,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:36,746 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-01 00:26:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:37,315 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-01 00:26:37,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 00:26:37,316 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-01 00:26:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:37,316 INFO L225 Difference]: With dead ends: 83 [2018-10-01 00:26:37,316 INFO L226 Difference]: Without dead ends: 81 [2018-10-01 00:26:37,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:37,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-01 00:26:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-01 00:26:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-01 00:26:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-01 00:26:37,318 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-01 00:26:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:37,319 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-01 00:26:37,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-01 00:26:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-01 00:26:37,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 00:26:37,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:37,319 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-01 00:26:37,320 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:37,320 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:37,320 INFO L82 PathProgramCache]: Analyzing trace with hash -232714324, now seen corresponding path program 77 times [2018-10-01 00:26:37,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:37,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:37,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:37,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:37,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:37,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:37,793 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:37,800 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:37,882 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-01 00:26:37,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:37,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:38,065 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:38,065 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 00:26:38,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 00:26:38,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 00:26:38,066 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:38,067 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-01 00:26:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:38,615 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-01 00:26:38,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 00:26:38,615 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-01 00:26:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:38,615 INFO L225 Difference]: With dead ends: 84 [2018-10-01 00:26:38,615 INFO L226 Difference]: Without dead ends: 82 [2018-10-01 00:26:38,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-01 00:26:38,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-01 00:26:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-01 00:26:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-01 00:26:38,618 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-01 00:26:38,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:38,618 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-01 00:26:38,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 00:26:38,619 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-01 00:26:38,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-01 00:26:38,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:38,620 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-01 00:26:38,620 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:38,620 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:38,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1375792355, now seen corresponding path program 78 times [2018-10-01 00:26:38,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:38,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:38,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:38,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:38,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:39,029 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:39,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:39,036 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:39,284 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-01 00:26:39,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:39,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:39,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:39,531 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-01 00:26:39,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-01 00:26:39,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-01 00:26:39,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:39,532 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-01 00:26:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:39,884 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 00:26:39,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 00:26:39,885 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-01 00:26:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:39,885 INFO L225 Difference]: With dead ends: 85 [2018-10-01 00:26:39,885 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 00:26:39,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 00:26:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-01 00:26:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 00:26:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-01 00:26:39,888 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-01 00:26:39,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:39,888 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-01 00:26:39,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-01 00:26:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-01 00:26:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 00:26:39,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:39,889 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-01 00:26:39,889 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:39,889 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:39,889 INFO L82 PathProgramCache]: Analyzing trace with hash -300108148, now seen corresponding path program 79 times [2018-10-01 00:26:39,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:39,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:39,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:39,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:39,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:40,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:40,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:40,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:40,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:41,095 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:41,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 00:26:41,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 00:26:41,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 00:26:41,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:41,096 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-01 00:26:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:41,566 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-01 00:26:41,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 00:26:41,566 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-01 00:26:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:41,567 INFO L225 Difference]: With dead ends: 86 [2018-10-01 00:26:41,567 INFO L226 Difference]: Without dead ends: 84 [2018-10-01 00:26:41,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:26:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-01 00:26:41,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-01 00:26:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-01 00:26:41,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-01 00:26:41,570 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-01 00:26:41,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:41,570 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-01 00:26:41,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 00:26:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-01 00:26:41,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 00:26:41,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:41,571 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-01 00:26:41,571 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:41,571 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:41,571 INFO L82 PathProgramCache]: Analyzing trace with hash -713416189, now seen corresponding path program 80 times [2018-10-01 00:26:41,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:41,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:41,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:41,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:41,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:42,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:42,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:42,027 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:42,091 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:42,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:42,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:42,269 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:42,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-01 00:26:42,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 00:26:42,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 00:26:42,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:42,271 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-01 00:26:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:42,813 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-01 00:26:42,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 00:26:42,814 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-01 00:26:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:42,814 INFO L225 Difference]: With dead ends: 87 [2018-10-01 00:26:42,814 INFO L226 Difference]: Without dead ends: 85 [2018-10-01 00:26:42,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-01 00:26:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-01 00:26:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 00:26:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-01 00:26:42,816 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-01 00:26:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:42,816 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-01 00:26:42,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 00:26:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-01 00:26:42,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-01 00:26:42,817 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:42,817 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-01 00:26:42,817 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:42,817 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash -641063572, now seen corresponding path program 81 times [2018-10-01 00:26:42,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:42,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:42,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:42,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:42,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:43,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:43,369 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:43,376 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:43,461 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-01 00:26:43,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:43,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:43,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:43,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-01 00:26:43,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 00:26:43,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 00:26:43,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:43,652 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-01 00:26:44,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:44,113 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-01 00:26:44,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 00:26:44,113 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-01 00:26:44,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:44,114 INFO L225 Difference]: With dead ends: 88 [2018-10-01 00:26:44,114 INFO L226 Difference]: Without dead ends: 86 [2018-10-01 00:26:44,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:26:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-01 00:26:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-01 00:26:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-01 00:26:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-01 00:26:44,116 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-01 00:26:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:44,116 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-01 00:26:44,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 00:26:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-01 00:26:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-01 00:26:44,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:44,117 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-01 00:26:44,117 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:44,117 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:44,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1601867555, now seen corresponding path program 82 times [2018-10-01 00:26:44,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:44,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:44,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:44,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:44,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:44,986 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:44,986 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:44,995 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:45,057 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:45,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:45,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:45,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:45,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-01 00:26:45,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-01 00:26:45,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-01 00:26:45,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:45,384 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-01 00:26:46,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:46,354 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 00:26:46,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 00:26:46,355 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-01 00:26:46,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:46,355 INFO L225 Difference]: With dead ends: 89 [2018-10-01 00:26:46,356 INFO L226 Difference]: Without dead ends: 87 [2018-10-01 00:26:46,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:26:46,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-01 00:26:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-01 00:26:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-01 00:26:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-01 00:26:46,358 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-01 00:26:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:46,358 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-01 00:26:46,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-01 00:26:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-01 00:26:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 00:26:46,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:46,359 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-01 00:26:46,360 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:46,360 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:46,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1881711540, now seen corresponding path program 83 times [2018-10-01 00:26:46,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:46,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:46,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:46,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:46,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:46,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:46,811 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:46,821 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:46,918 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-01 00:26:46,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:46,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:47,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:47,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 00:26:47,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 00:26:47,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 00:26:47,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:47,098 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-01 00:26:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:47,686 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-01 00:26:47,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 00:26:47,686 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-01 00:26:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:47,687 INFO L225 Difference]: With dead ends: 90 [2018-10-01 00:26:47,687 INFO L226 Difference]: Without dead ends: 88 [2018-10-01 00:26:47,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:47,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-01 00:26:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-01 00:26:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-01 00:26:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-01 00:26:47,689 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-01 00:26:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:47,689 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-01 00:26:47,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 00:26:47,690 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-01 00:26:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-01 00:26:47,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:47,690 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-01 00:26:47,691 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:47,691 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:47,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1796486211, now seen corresponding path program 84 times [2018-10-01 00:26:47,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:47,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:47,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:47,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:47,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:48,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:48,120 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:48,128 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:48,220 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 00:26:48,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:48,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:48,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:48,398 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:48,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-01 00:26:48,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-01 00:26:48,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-01 00:26:48,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:48,399 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-01 00:26:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:48,847 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-01 00:26:48,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 00:26:48,848 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-01 00:26:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:48,848 INFO L225 Difference]: With dead ends: 91 [2018-10-01 00:26:48,848 INFO L226 Difference]: Without dead ends: 89 [2018-10-01 00:26:48,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-01 00:26:48,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-01 00:26:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-01 00:26:48,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-01 00:26:48,851 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-01 00:26:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:48,851 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-01 00:26:48,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-01 00:26:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-01 00:26:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 00:26:48,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:48,852 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-01 00:26:48,852 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:48,852 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:48,853 INFO L82 PathProgramCache]: Analyzing trace with hash -143500500, now seen corresponding path program 85 times [2018-10-01 00:26:48,853 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:48,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:48,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:48,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:48,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:49,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:49,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:49,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:49,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:49,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:49,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 00:26:49,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 00:26:49,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 00:26:49,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:49,535 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-01 00:26:49,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:49,923 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-01 00:26:49,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 00:26:49,923 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-01 00:26:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:49,924 INFO L225 Difference]: With dead ends: 92 [2018-10-01 00:26:49,924 INFO L226 Difference]: Without dead ends: 90 [2018-10-01 00:26:49,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-01 00:26:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-01 00:26:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-01 00:26:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-01 00:26:49,927 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-01 00:26:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:49,927 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-01 00:26:49,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 00:26:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-01 00:26:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-01 00:26:49,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:49,929 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-01 00:26:49,929 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:49,929 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash -153546397, now seen corresponding path program 86 times [2018-10-01 00:26:49,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:49,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:49,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:49,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:49,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:50,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:50,684 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:50,690 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:50,752 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:50,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:50,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:50,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:50,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-01 00:26:50,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 00:26:50,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 00:26:50,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:50,984 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-01 00:26:51,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:51,353 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 00:26:51,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 00:26:51,353 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-01 00:26:51,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:51,354 INFO L225 Difference]: With dead ends: 93 [2018-10-01 00:26:51,354 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 00:26:51,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:26:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 00:26:51,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 00:26:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 00:26:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-01 00:26:51,356 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-01 00:26:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:51,356 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-01 00:26:51,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 00:26:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-01 00:26:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-01 00:26:51,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:51,356 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-01 00:26:51,357 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:51,357 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:51,357 INFO L82 PathProgramCache]: Analyzing trace with hash -464969204, now seen corresponding path program 87 times [2018-10-01 00:26:51,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:51,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:51,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:51,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:51,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:51,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:51,860 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:51,868 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:51,962 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-01 00:26:51,962 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:51,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:52,152 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:52,152 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-01 00:26:52,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 00:26:52,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 00:26:52,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:52,154 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-01 00:26:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:52,526 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-01 00:26:52,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 00:26:52,527 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-01 00:26:52,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:52,527 INFO L225 Difference]: With dead ends: 94 [2018-10-01 00:26:52,527 INFO L226 Difference]: Without dead ends: 92 [2018-10-01 00:26:52,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:26:52,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-01 00:26:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-01 00:26:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-01 00:26:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-01 00:26:52,530 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-01 00:26:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:52,531 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-01 00:26:52,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 00:26:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-01 00:26:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-01 00:26:52,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:52,531 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-01 00:26:52,532 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:52,532 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1529141629, now seen corresponding path program 88 times [2018-10-01 00:26:52,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:52,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:52,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:52,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:52,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:52,999 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:52,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:53,007 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:53,073 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:53,073 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:53,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:53,252 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:53,253 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-01 00:26:53,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-01 00:26:53,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-01 00:26:53,254 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:53,254 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-01 00:26:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:53,637 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-01 00:26:53,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 00:26:53,637 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-01 00:26:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:53,638 INFO L225 Difference]: With dead ends: 95 [2018-10-01 00:26:53,638 INFO L226 Difference]: Without dead ends: 93 [2018-10-01 00:26:53,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-01 00:26:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-01 00:26:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-01 00:26:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-01 00:26:53,640 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-01 00:26:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:53,641 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-01 00:26:53,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-01 00:26:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-01 00:26:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 00:26:53,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:53,641 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-01 00:26:53,642 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:53,642 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:53,642 INFO L82 PathProgramCache]: Analyzing trace with hash -158748436, now seen corresponding path program 89 times [2018-10-01 00:26:53,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:53,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:53,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:53,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:53,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:54,102 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:54,102 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:54,109 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:54,208 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-01 00:26:54,208 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:54,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:54,400 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:54,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 00:26:54,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 00:26:54,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 00:26:54,401 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:54,402 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-01 00:26:54,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:54,819 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-01 00:26:54,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 00:26:54,819 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-01 00:26:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:54,820 INFO L225 Difference]: With dead ends: 96 [2018-10-01 00:26:54,820 INFO L226 Difference]: Without dead ends: 94 [2018-10-01 00:26:54,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-01 00:26:54,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-01 00:26:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-01 00:26:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-01 00:26:54,823 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-01 00:26:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:54,823 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-01 00:26:54,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 00:26:54,823 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-01 00:26:54,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-01 00:26:54,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:54,824 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-01 00:26:54,824 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:54,824 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:54,824 INFO L82 PathProgramCache]: Analyzing trace with hash -626232413, now seen corresponding path program 90 times [2018-10-01 00:26:54,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:54,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:54,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:54,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:54,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:55,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:55,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:55,312 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:55,404 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-01 00:26:55,404 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:55,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:55,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:55,595 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-01 00:26:55,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-01 00:26:55,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-01 00:26:55,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:55,596 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-01 00:26:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:56,297 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 00:26:56,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 00:26:56,297 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-01 00:26:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:56,298 INFO L225 Difference]: With dead ends: 97 [2018-10-01 00:26:56,298 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 00:26:56,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 00:26:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-01 00:26:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 00:26:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-01 00:26:56,301 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-01 00:26:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:56,301 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-01 00:26:56,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-01 00:26:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-01 00:26:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-01 00:26:56,302 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:56,302 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-01 00:26:56,302 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:56,302 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:56,302 INFO L82 PathProgramCache]: Analyzing trace with hash 2061633484, now seen corresponding path program 91 times [2018-10-01 00:26:56,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:56,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:56,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:56,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:56,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:56,970 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:56,971 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:56,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:57,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:57,239 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:57,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 00:26:57,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 00:26:57,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 00:26:57,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:57,240 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-01 00:26:57,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:57,889 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-01 00:26:57,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 00:26:57,889 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-01 00:26:57,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:57,890 INFO L225 Difference]: With dead ends: 98 [2018-10-01 00:26:57,890 INFO L226 Difference]: Without dead ends: 96 [2018-10-01 00:26:57,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:26:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-01 00:26:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-01 00:26:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-01 00:26:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-01 00:26:57,892 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-01 00:26:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:57,892 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-01 00:26:57,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 00:26:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-01 00:26:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-01 00:26:57,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:57,893 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-01 00:26:57,893 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:57,893 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash -513869629, now seen corresponding path program 92 times [2018-10-01 00:26:57,893 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:57,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:57,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:57,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:57,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:58,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:58,373 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:58,380 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:58,452 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:58,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:58,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:58,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:58,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-01 00:26:58,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 00:26:58,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 00:26:58,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:58,652 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-01 00:26:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:59,055 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-01 00:26:59,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 00:26:59,056 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-01 00:26:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:59,056 INFO L225 Difference]: With dead ends: 99 [2018-10-01 00:26:59,056 INFO L226 Difference]: Without dead ends: 97 [2018-10-01 00:26:59,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:26:59,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-01 00:26:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-01 00:26:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-01 00:26:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-01 00:26:59,059 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-01 00:26:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:59,059 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-01 00:26:59,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 00:26:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-01 00:26:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-01 00:26:59,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:59,060 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-01 00:26:59,060 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:59,060 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:59,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1249912492, now seen corresponding path program 93 times [2018-10-01 00:26:59,060 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:59,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:59,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:59,061 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:59,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:59,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:59,920 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:59,927 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:00,029 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-01 00:27:00,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:00,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:00,225 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:00,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 00:27:00,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 00:27:00,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 00:27:00,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:00,227 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-01 00:27:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:00,838 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-01 00:27:00,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 00:27:00,838 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-01 00:27:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:00,839 INFO L225 Difference]: With dead ends: 100 [2018-10-01 00:27:00,839 INFO L226 Difference]: Without dead ends: 98 [2018-10-01 00:27:00,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:27:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-01 00:27:00,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-01 00:27:00,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-01 00:27:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-01 00:27:00,841 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-01 00:27:00,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:00,841 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-01 00:27:00,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 00:27:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-01 00:27:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-01 00:27:00,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:00,841 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-01 00:27:00,842 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:00,842 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash 92583395, now seen corresponding path program 94 times [2018-10-01 00:27:00,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:00,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:00,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:00,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:00,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:01,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:01,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:01,526 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:01,597 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:01,598 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:01,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:01,839 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:01,839 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-01 00:27:01,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 00:27:01,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 00:27:01,840 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:01,840 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-01 00:27:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:02,247 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 00:27:02,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 00:27:02,248 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-01 00:27:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:02,248 INFO L225 Difference]: With dead ends: 101 [2018-10-01 00:27:02,249 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 00:27:02,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:02,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 00:27:02,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-01 00:27:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 00:27:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-01 00:27:02,252 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-01 00:27:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:02,252 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-01 00:27:02,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 00:27:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-01 00:27:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 00:27:02,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:02,253 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-01 00:27:02,254 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:02,254 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:02,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1424880244, now seen corresponding path program 95 times [2018-10-01 00:27:02,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:02,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:02,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:02,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:02,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:02,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:02,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:02,776 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:02,888 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-01 00:27:02,888 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:02,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:03,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:03,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 00:27:03,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 00:27:03,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 00:27:03,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:03,088 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-01 00:27:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:03,741 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-01 00:27:03,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 00:27:03,741 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-01 00:27:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:03,741 INFO L225 Difference]: With dead ends: 102 [2018-10-01 00:27:03,742 INFO L226 Difference]: Without dead ends: 100 [2018-10-01 00:27:03,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-01 00:27:03,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-01 00:27:03,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-01 00:27:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-01 00:27:03,744 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-01 00:27:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:03,745 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-01 00:27:03,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 00:27:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-01 00:27:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-01 00:27:03,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:03,745 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-01 00:27:03,745 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:03,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1221612797, now seen corresponding path program 96 times [2018-10-01 00:27:03,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:03,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:03,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:03,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:03,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:04,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:04,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:04,315 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:04,423 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 00:27:04,424 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:04,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:04,621 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:04,621 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-01 00:27:04,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-01 00:27:04,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-01 00:27:04,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:04,622 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-01 00:27:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:05,093 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-01 00:27:05,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 00:27:05,093 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-01 00:27:05,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:05,094 INFO L225 Difference]: With dead ends: 103 [2018-10-01 00:27:05,094 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 00:27:05,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:05,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 00:27:05,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 00:27:05,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 00:27:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-01 00:27:05,097 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-01 00:27:05,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:05,098 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-01 00:27:05,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-01 00:27:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-01 00:27:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-01 00:27:05,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:05,098 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-01 00:27:05,098 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:05,099 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:05,099 INFO L82 PathProgramCache]: Analyzing trace with hash 784710764, now seen corresponding path program 97 times [2018-10-01 00:27:05,099 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:05,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:05,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:05,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:05,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:05,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:05,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:05,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:05,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:05,942 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:05,942 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 00:27:05,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 00:27:05,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 00:27:05,943 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:05,943 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-01 00:27:06,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:06,524 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-01 00:27:06,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 00:27:06,524 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-01 00:27:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:06,525 INFO L225 Difference]: With dead ends: 104 [2018-10-01 00:27:06,525 INFO L226 Difference]: Without dead ends: 102 [2018-10-01 00:27:06,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-01 00:27:06,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-01 00:27:06,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-01 00:27:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-01 00:27:06,528 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-01 00:27:06,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:06,528 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-01 00:27:06,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 00:27:06,528 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-01 00:27:06,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-01 00:27:06,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:06,529 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-01 00:27:06,529 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:06,529 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:06,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1443768285, now seen corresponding path program 98 times [2018-10-01 00:27:06,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:06,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:06,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:06,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:06,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:07,061 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:07,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:07,070 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:07,144 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:07,145 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:07,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:07,355 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:07,355 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-01 00:27:07,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 00:27:07,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 00:27:07,356 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:07,356 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-01 00:27:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:08,110 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 00:27:08,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 00:27:08,111 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-01 00:27:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:08,111 INFO L225 Difference]: With dead ends: 105 [2018-10-01 00:27:08,111 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 00:27:08,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:08,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 00:27:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-01 00:27:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 00:27:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-01 00:27:08,114 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-01 00:27:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:08,114 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-01 00:27:08,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 00:27:08,114 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-01 00:27:08,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 00:27:08,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:08,114 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-01 00:27:08,115 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:08,115 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:08,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1807142068, now seen corresponding path program 99 times [2018-10-01 00:27:08,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:08,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:08,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:08,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:08,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:08,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:08,654 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:08,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:08,773 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-01 00:27:08,773 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:08,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:08,977 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:08,977 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 00:27:08,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 00:27:08,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 00:27:08,978 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:08,978 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-01 00:27:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:09,753 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-01 00:27:09,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 00:27:09,753 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-01 00:27:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:09,754 INFO L225 Difference]: With dead ends: 106 [2018-10-01 00:27:09,754 INFO L226 Difference]: Without dead ends: 104 [2018-10-01 00:27:09,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-01 00:27:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-01 00:27:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-01 00:27:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-01 00:27:09,756 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-01 00:27:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:09,757 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-01 00:27:09,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 00:27:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-01 00:27:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-01 00:27:09,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:09,757 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-01 00:27:09,758 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:09,758 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:09,758 INFO L82 PathProgramCache]: Analyzing trace with hash -186827453, now seen corresponding path program 100 times [2018-10-01 00:27:09,758 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:09,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:09,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:09,760 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:09,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:10,312 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:10,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:10,319 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:10,393 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:10,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:10,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:10,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:10,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-01 00:27:10,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 00:27:10,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 00:27:10,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:10,619 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-01 00:27:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:11,480 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-01 00:27:11,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 00:27:11,480 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-01 00:27:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:11,481 INFO L225 Difference]: With dead ends: 107 [2018-10-01 00:27:11,481 INFO L226 Difference]: Without dead ends: 105 [2018-10-01 00:27:11,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-01 00:27:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-01 00:27:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-01 00:27:11,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-01 00:27:11,484 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-01 00:27:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:11,485 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-01 00:27:11,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 00:27:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-01 00:27:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-01 00:27:11,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:11,486 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-01 00:27:11,486 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:11,486 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:11,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1496681940, now seen corresponding path program 101 times [2018-10-01 00:27:11,486 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:11,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:11,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:11,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:11,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:12,117 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:12,117 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:12,124 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:12,256 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-01 00:27:12,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:12,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:12,466 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:12,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 00:27:12,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 00:27:12,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 00:27:12,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:12,468 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-01 00:27:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:13,272 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-01 00:27:13,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 00:27:13,272 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-01 00:27:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:13,273 INFO L225 Difference]: With dead ends: 108 [2018-10-01 00:27:13,273 INFO L226 Difference]: Without dead ends: 106 [2018-10-01 00:27:13,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-01 00:27:13,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-01 00:27:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-01 00:27:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-01 00:27:13,276 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-01 00:27:13,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:13,277 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-01 00:27:13,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 00:27:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-01 00:27:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-01 00:27:13,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:13,278 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-01 00:27:13,278 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:13,278 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:13,278 INFO L82 PathProgramCache]: Analyzing trace with hash 847501923, now seen corresponding path program 102 times [2018-10-01 00:27:13,278 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:13,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:13,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:13,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:13,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:13,947 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:13,947 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:13,955 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:14,069 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-01 00:27:14,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:14,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:14,282 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:14,282 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-01 00:27:14,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-01 00:27:14,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-01 00:27:14,283 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:14,284 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-01 00:27:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:15,083 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 00:27:15,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 00:27:15,083 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-01 00:27:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:15,084 INFO L225 Difference]: With dead ends: 109 [2018-10-01 00:27:15,084 INFO L226 Difference]: Without dead ends: 107 [2018-10-01 00:27:15,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-01 00:27:15,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-01 00:27:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-01 00:27:15,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-01 00:27:15,087 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-01 00:27:15,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:15,087 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-01 00:27:15,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-01 00:27:15,087 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-01 00:27:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-01 00:27:15,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:15,088 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-01 00:27:15,088 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:15,088 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:15,088 INFO L82 PathProgramCache]: Analyzing trace with hash 502757644, now seen corresponding path program 103 times [2018-10-01 00:27:15,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:15,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:15,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:15,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:15,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:15,699 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:15,699 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:15,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:15,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:16,078 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:16,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-01 00:27:16,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 00:27:16,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 00:27:16,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:16,080 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-01 00:27:16,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:16,749 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-01 00:27:16,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 00:27:16,750 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-01 00:27:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:16,750 INFO L225 Difference]: With dead ends: 110 [2018-10-01 00:27:16,750 INFO L226 Difference]: Without dead ends: 108 [2018-10-01 00:27:16,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:16,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-01 00:27:16,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-01 00:27:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-01 00:27:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-01 00:27:16,752 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-01 00:27:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:16,752 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-01 00:27:16,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 00:27:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-01 00:27:16,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 00:27:16,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:16,753 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-01 00:27:16,753 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:16,753 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:16,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1594380413, now seen corresponding path program 104 times [2018-10-01 00:27:16,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:16,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:16,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:16,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:16,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:17,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:17,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:17,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:17,436 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:17,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:17,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:17,754 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:17,755 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-01 00:27:17,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 00:27:17,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 00:27:17,756 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:17,756 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-01 00:27:18,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:18,349 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-01 00:27:18,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 00:27:18,349 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-01 00:27:18,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:18,350 INFO L225 Difference]: With dead ends: 111 [2018-10-01 00:27:18,350 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 00:27:18,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 00:27:18,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-01 00:27:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 00:27:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-01 00:27:18,353 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-01 00:27:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:18,353 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-01 00:27:18,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 00:27:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-01 00:27:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 00:27:18,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:18,355 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-01 00:27:18,355 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:18,355 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:18,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2113816556, now seen corresponding path program 105 times [2018-10-01 00:27:18,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:18,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:18,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:18,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:18,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:19,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:19,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:19,013 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:19,135 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-01 00:27:19,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:19,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:19,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:19,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 00:27:19,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 00:27:19,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 00:27:19,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:19,351 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-01 00:27:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:20,161 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-01 00:27:20,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 00:27:20,161 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-01 00:27:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:20,162 INFO L225 Difference]: With dead ends: 112 [2018-10-01 00:27:20,162 INFO L226 Difference]: Without dead ends: 110 [2018-10-01 00:27:20,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-01 00:27:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-01 00:27:20,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-01 00:27:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-01 00:27:20,164 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-01 00:27:20,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:20,164 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-01 00:27:20,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 00:27:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-01 00:27:20,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-01 00:27:20,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:20,165 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-01 00:27:20,165 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:20,165 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:20,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1103805603, now seen corresponding path program 106 times [2018-10-01 00:27:20,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:20,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:20,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:20,166 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:20,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:20,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:20,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:20,740 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:20,820 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:20,820 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:20,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:21,035 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:21,035 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-01 00:27:21,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-01 00:27:21,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-01 00:27:21,037 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:21,037 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-01 00:27:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:21,966 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 00:27:21,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 00:27:21,966 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-01 00:27:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:21,966 INFO L225 Difference]: With dead ends: 113 [2018-10-01 00:27:21,967 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 00:27:21,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:21,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 00:27:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-01 00:27:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 00:27:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-01 00:27:21,969 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-01 00:27:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:21,969 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-01 00:27:21,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-01 00:27:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-01 00:27:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 00:27:21,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:21,970 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-01 00:27:21,970 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:21,970 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash -141762868, now seen corresponding path program 107 times [2018-10-01 00:27:21,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:21,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:21,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:21,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:21,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:22,574 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:22,574 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:22,582 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:22,714 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-01 00:27:22,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:22,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:22,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:22,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-01 00:27:22,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 00:27:22,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 00:27:22,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:22,938 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-01 00:27:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:23,822 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-01 00:27:23,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 00:27:23,823 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-01 00:27:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:23,823 INFO L225 Difference]: With dead ends: 114 [2018-10-01 00:27:23,823 INFO L226 Difference]: Without dead ends: 112 [2018-10-01 00:27:23,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:23,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-01 00:27:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-01 00:27:23,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-01 00:27:23,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-01 00:27:23,825 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-01 00:27:23,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:23,826 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-01 00:27:23,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 00:27:23,826 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-01 00:27:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-01 00:27:23,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:23,826 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-01 00:27:23,826 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:23,826 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:23,827 INFO L82 PathProgramCache]: Analyzing trace with hash -99679805, now seen corresponding path program 108 times [2018-10-01 00:27:23,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:23,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:23,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:23,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:23,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:24,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:24,433 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:24,441 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:24,567 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 00:27:24,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:24,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:24,797 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:24,798 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-01 00:27:24,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-01 00:27:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-01 00:27:24,799 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:24,799 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-01 00:27:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:25,389 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-01 00:27:25,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 00:27:25,390 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-01 00:27:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:25,390 INFO L225 Difference]: With dead ends: 115 [2018-10-01 00:27:25,390 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 00:27:25,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:25,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 00:27:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-01 00:27:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-01 00:27:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-01 00:27:25,392 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-01 00:27:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:25,392 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-01 00:27:25,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-01 00:27:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-01 00:27:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-01 00:27:25,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:25,393 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-01 00:27:25,393 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:25,393 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:25,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1204895148, now seen corresponding path program 109 times [2018-10-01 00:27:25,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:25,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:25,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:25,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:25,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:25,988 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:25,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:25,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:26,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:26,308 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:26,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 00:27:26,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 00:27:26,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 00:27:26,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:26,310 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-10-01 00:27:27,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:27,365 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-01 00:27:27,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 00:27:27,365 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-10-01 00:27:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:27,365 INFO L225 Difference]: With dead ends: 116 [2018-10-01 00:27:27,366 INFO L226 Difference]: Without dead ends: 114 [2018-10-01 00:27:27,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:27,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-01 00:27:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-01 00:27:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-01 00:27:27,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-01 00:27:27,368 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-01 00:27:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:27,368 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-01 00:27:27,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 00:27:27,369 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-01 00:27:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 00:27:27,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:27,369 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-01 00:27:27,370 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:27,370 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:27,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1302954269, now seen corresponding path program 110 times [2018-10-01 00:27:27,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:27,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:27,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:27,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:27,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:28,021 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:28,021 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:28,029 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:28,115 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:28,115 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:28,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:28,344 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:28,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-01 00:27:28,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 00:27:28,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 00:27:28,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:28,346 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-10-01 00:27:29,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:29,235 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 00:27:29,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 00:27:29,235 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-10-01 00:27:29,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:29,236 INFO L225 Difference]: With dead ends: 117 [2018-10-01 00:27:29,236 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 00:27:29,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 00:27:29,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-01 00:27:29,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 00:27:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-01 00:27:29,239 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-10-01 00:27:29,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:29,239 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-01 00:27:29,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 00:27:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-01 00:27:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-01 00:27:29,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:29,240 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-10-01 00:27:29,240 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:29,240 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:29,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1736874868, now seen corresponding path program 111 times [2018-10-01 00:27:29,241 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:29,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:29,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:29,241 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:29,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:29,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:29,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:29,893 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:30,066 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-01 00:27:30,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:30,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:30,291 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:30,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 00:27:30,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 00:27:30,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 00:27:30,293 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:30,293 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-10-01 00:27:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:31,199 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-01 00:27:31,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 00:27:31,199 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-10-01 00:27:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:31,200 INFO L225 Difference]: With dead ends: 118 [2018-10-01 00:27:31,200 INFO L226 Difference]: Without dead ends: 116 [2018-10-01 00:27:31,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-01 00:27:31,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-01 00:27:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-01 00:27:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-01 00:27:31,203 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-10-01 00:27:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:31,204 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-01 00:27:31,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 00:27:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-01 00:27:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-01 00:27:31,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:31,204 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-10-01 00:27:31,205 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:31,205 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1991455747, now seen corresponding path program 112 times [2018-10-01 00:27:31,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:31,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:31,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:31,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:31,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:32,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:32,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:32,163 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:32,249 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:32,250 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:32,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:32,546 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:32,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-01 00:27:32,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 00:27:32,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 00:27:32,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:32,548 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-10-01 00:27:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:33,262 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-01 00:27:33,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 00:27:33,263 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-10-01 00:27:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:33,263 INFO L225 Difference]: With dead ends: 119 [2018-10-01 00:27:33,263 INFO L226 Difference]: Without dead ends: 117 [2018-10-01 00:27:33,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:27:33,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-01 00:27:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-01 00:27:33,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-01 00:27:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-01 00:27:33,265 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-10-01 00:27:33,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:33,265 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-01 00:27:33,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 00:27:33,265 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-01 00:27:33,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 00:27:33,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:33,266 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-10-01 00:27:33,266 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:33,266 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:33,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1605587820, now seen corresponding path program 113 times [2018-10-01 00:27:33,266 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:33,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:33,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:33,267 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:33,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:33,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:33,966 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:33,973 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:34,118 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-01 00:27:34,118 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:34,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:34,510 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:34,510 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 00:27:34,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 00:27:34,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 00:27:34,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:34,512 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-10-01 00:27:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:35,198 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-01 00:27:35,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 00:27:35,198 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-10-01 00:27:35,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:35,199 INFO L225 Difference]: With dead ends: 120 [2018-10-01 00:27:35,199 INFO L226 Difference]: Without dead ends: 118 [2018-10-01 00:27:35,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:27:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-01 00:27:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-01 00:27:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-01 00:27:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-01 00:27:35,201 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-10-01 00:27:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:35,201 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-01 00:27:35,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 00:27:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-01 00:27:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-01 00:27:35,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:35,202 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-10-01 00:27:35,202 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:35,202 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:35,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1766383325, now seen corresponding path program 114 times [2018-10-01 00:27:35,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:35,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:35,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:35,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:35,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:35,824 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:35,824 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:35,830 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:35,963 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-10-01 00:27:35,964 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:35,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:36,201 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:36,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-01 00:27:36,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-01 00:27:36,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-01 00:27:36,202 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:36,203 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-10-01 00:27:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:37,075 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 00:27:37,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 00:27:37,076 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-10-01 00:27:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:37,076 INFO L225 Difference]: With dead ends: 121 [2018-10-01 00:27:37,076 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 00:27:37,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 00:27:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-01 00:27:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 00:27:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-01 00:27:37,078 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-10-01 00:27:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:37,078 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-01 00:27:37,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-01 00:27:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-01 00:27:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 00:27:37,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:37,079 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-10-01 00:27:37,079 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:37,079 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:37,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1076693580, now seen corresponding path program 115 times [2018-10-01 00:27:37,080 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:37,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:37,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:37,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:37,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:37,714 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:37,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:37,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:37,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:38,048 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:38,048 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 00:27:38,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 00:27:38,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 00:27:38,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:38,050 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-10-01 00:27:38,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:38,914 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-10-01 00:27:38,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 00:27:38,914 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-10-01 00:27:38,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:38,915 INFO L225 Difference]: With dead ends: 122 [2018-10-01 00:27:38,915 INFO L226 Difference]: Without dead ends: 120 [2018-10-01 00:27:38,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:38,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-01 00:27:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-01 00:27:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-01 00:27:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-01 00:27:38,917 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-10-01 00:27:38,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:38,917 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-01 00:27:38,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 00:27:38,917 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-01 00:27:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-01 00:27:38,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:38,918 INFO L375 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-10-01 00:27:38,918 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:38,918 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:38,918 INFO L82 PathProgramCache]: Analyzing trace with hash -982235581, now seen corresponding path program 116 times [2018-10-01 00:27:38,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:38,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:38,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:38,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:38,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:39,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:39,567 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:39,575 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:39,679 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:39,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:39,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:39,913 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:39,913 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-01 00:27:39,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 00:27:39,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 00:27:39,914 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:39,914 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-10-01 00:27:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:40,495 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-01 00:27:40,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 00:27:40,495 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-10-01 00:27:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:40,496 INFO L225 Difference]: With dead ends: 123 [2018-10-01 00:27:40,496 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 00:27:40,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 00:27:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 00:27:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 00:27:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-01 00:27:40,498 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-10-01 00:27:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:40,498 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-01 00:27:40,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 00:27:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-01 00:27:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-01 00:27:40,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:40,499 INFO L375 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-10-01 00:27:40,499 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:40,499 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:40,499 INFO L82 PathProgramCache]: Analyzing trace with hash -384530132, now seen corresponding path program 117 times [2018-10-01 00:27:40,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:40,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:40,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:40,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:40,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:41,146 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:41,146 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:41,154 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:41,291 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-10-01 00:27:41,291 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:41,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:41,527 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:41,527 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 00:27:41,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 00:27:41,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 00:27:41,529 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:41,529 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-10-01 00:27:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:42,440 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-01 00:27:42,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 00:27:42,440 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-10-01 00:27:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:42,441 INFO L225 Difference]: With dead ends: 124 [2018-10-01 00:27:42,441 INFO L226 Difference]: Without dead ends: 122 [2018-10-01 00:27:42,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-01 00:27:42,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-01 00:27:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-01 00:27:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-01 00:27:42,443 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-10-01 00:27:42,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:42,443 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-01 00:27:42,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 00:27:42,443 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-01 00:27:42,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-01 00:27:42,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:42,444 INFO L375 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-10-01 00:27:42,444 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:42,444 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:42,444 INFO L82 PathProgramCache]: Analyzing trace with hash 964469603, now seen corresponding path program 118 times [2018-10-01 00:27:42,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:42,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:42,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:42,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:42,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:43,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:43,115 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:43,137 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:43,227 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:43,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:43,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:43,465 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:43,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-10-01 00:27:43,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-10-01 00:27:43,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-10-01 00:27:43,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:43,467 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-10-01 00:27:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:44,278 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 00:27:44,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 00:27:44,278 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-10-01 00:27:44,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:44,279 INFO L225 Difference]: With dead ends: 125 [2018-10-01 00:27:44,279 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 00:27:44,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 00:27:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-01 00:27:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-01 00:27:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-01 00:27:44,281 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-10-01 00:27:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:44,282 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-01 00:27:44,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-10-01 00:27:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-01 00:27:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 00:27:44,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:44,282 INFO L375 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-10-01 00:27:44,283 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:44,283 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:44,283 INFO L82 PathProgramCache]: Analyzing trace with hash -166211572, now seen corresponding path program 119 times [2018-10-01 00:27:44,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:44,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:44,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:44,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:44,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:45,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:45,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:45,024 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:45,181 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-01 00:27:45,181 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:45,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:45,426 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:45,426 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-10-01 00:27:45,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 00:27:45,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 00:27:45,428 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:45,428 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-10-01 00:27:46,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:46,028 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-10-01 00:27:46,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 00:27:46,028 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-10-01 00:27:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:46,028 INFO L225 Difference]: With dead ends: 126 [2018-10-01 00:27:46,028 INFO L226 Difference]: Without dead ends: 124 [2018-10-01 00:27:46,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-01 00:27:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-01 00:27:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-01 00:27:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-01 00:27:46,033 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-10-01 00:27:46,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:46,033 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-01 00:27:46,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 00:27:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-01 00:27:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-01 00:27:46,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:46,034 INFO L375 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-10-01 00:27:46,034 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:46,034 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:46,034 INFO L82 PathProgramCache]: Analyzing trace with hash -857589629, now seen corresponding path program 120 times [2018-10-01 00:27:46,034 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:46,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:46,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:46,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:46,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:46,764 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:46,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:46,771 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:46,925 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 00:27:46,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:46,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:47,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:47,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-10-01 00:27:47,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-10-01 00:27:47,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-10-01 00:27:47,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:47,317 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-10-01 00:27:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:48,207 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-01 00:27:48,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 00:27:48,208 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-10-01 00:27:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:48,208 INFO L225 Difference]: With dead ends: 127 [2018-10-01 00:27:48,208 INFO L226 Difference]: Without dead ends: 125 [2018-10-01 00:27:48,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:27:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-01 00:27:48,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-01 00:27:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-01 00:27:48,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-01 00:27:48,210 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-10-01 00:27:48,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:48,210 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-01 00:27:48,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-10-01 00:27:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-01 00:27:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-01 00:27:48,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:48,211 INFO L375 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-10-01 00:27:48,211 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:48,211 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:48,211 INFO L82 PathProgramCache]: Analyzing trace with hash -815472916, now seen corresponding path program 121 times [2018-10-01 00:27:48,211 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:48,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:48,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:48,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:48,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:48,910 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:48,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:48,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:49,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:49,267 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:49,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 00:27:49,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 00:27:49,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 00:27:49,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:49,270 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-10-01 00:27:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:50,139 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-10-01 00:27:50,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 00:27:50,139 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-10-01 00:27:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:50,140 INFO L225 Difference]: With dead ends: 128 [2018-10-01 00:27:50,140 INFO L226 Difference]: Without dead ends: 126 [2018-10-01 00:27:50,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-01 00:27:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-01 00:27:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-01 00:27:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-01 00:27:50,142 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-10-01 00:27:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:50,142 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-01 00:27:50,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 00:27:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-01 00:27:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-01 00:27:50,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:50,143 INFO L375 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-10-01 00:27:50,143 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:50,143 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:50,143 INFO L82 PathProgramCache]: Analyzing trace with hash 490145187, now seen corresponding path program 122 times [2018-10-01 00:27:50,143 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:50,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:50,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:50,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:50,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:50,839 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:50,839 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:50,847 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:50,939 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:50,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:50,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:51,196 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:51,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-10-01 00:27:51,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 00:27:51,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 00:27:51,198 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:51,198 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-10-01 00:27:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:52,351 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 00:27:52,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 00:27:52,351 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-10-01 00:27:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:52,351 INFO L225 Difference]: With dead ends: 129 [2018-10-01 00:27:52,351 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 00:27:52,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 00:27:52,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-01 00:27:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 00:27:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-01 00:27:52,354 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-10-01 00:27:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:52,354 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-01 00:27:52,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 00:27:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-01 00:27:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-01 00:27:52,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:52,355 INFO L375 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-10-01 00:27:52,355 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:52,355 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:52,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1985366580, now seen corresponding path program 123 times [2018-10-01 00:27:52,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:52,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:52,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:52,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:52,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:53,036 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:53,036 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:53,043 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:53,190 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-10-01 00:27:53,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:53,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:53,473 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:53,473 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-10-01 00:27:53,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 00:27:53,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 00:27:53,475 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:53,475 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-10-01 00:27:54,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:54,464 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-01 00:27:54,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 00:27:54,464 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-10-01 00:27:54,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:54,465 INFO L225 Difference]: With dead ends: 130 [2018-10-01 00:27:54,465 INFO L226 Difference]: Without dead ends: 128 [2018-10-01 00:27:54,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-01 00:27:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-01 00:27:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-01 00:27:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-10-01 00:27:54,467 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-10-01 00:27:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:54,467 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-10-01 00:27:54,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 00:27:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-10-01 00:27:54,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-01 00:27:54,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:54,467 INFO L375 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-10-01 00:27:54,468 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:54,468 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:54,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1416820029, now seen corresponding path program 124 times [2018-10-01 00:27:54,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:54,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:54,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:54,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:54,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:55,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:55,178 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:55,186 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:55,280 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:55,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:55,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:55,538 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:55,539 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-10-01 00:27:55,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-10-01 00:27:55,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-10-01 00:27:55,540 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:55,540 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-10-01 00:27:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:56,438 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-01 00:27:56,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 00:27:56,438 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-10-01 00:27:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:56,438 INFO L225 Difference]: With dead ends: 131 [2018-10-01 00:27:56,439 INFO L226 Difference]: Without dead ends: 129 [2018-10-01 00:27:56,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-01 00:27:56,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-01 00:27:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-01 00:27:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-01 00:27:56,441 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-10-01 00:27:56,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:56,441 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-01 00:27:56,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-10-01 00:27:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-01 00:27:56,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 00:27:56,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:56,442 INFO L375 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-10-01 00:27:56,442 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:56,442 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:56,442 INFO L82 PathProgramCache]: Analyzing trace with hash -971746132, now seen corresponding path program 125 times [2018-10-01 00:27:56,442 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:56,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:56,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:56,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:56,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:57,315 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:57,315 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:57,325 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:57,505 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-10-01 00:27:57,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:57,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:57,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:57,752 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 00:27:57,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 00:27:57,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 00:27:57,754 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:57,754 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-10-01 00:27:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:58,584 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-10-01 00:27:58,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 00:27:58,584 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-10-01 00:27:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:58,584 INFO L225 Difference]: With dead ends: 132 [2018-10-01 00:27:58,584 INFO L226 Difference]: Without dead ends: 130 [2018-10-01 00:27:58,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:27:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-01 00:27:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-01 00:27:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-01 00:27:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-01 00:27:58,587 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-10-01 00:27:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:58,587 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-01 00:27:58,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 00:27:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-01 00:27:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-01 00:27:58,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:58,588 INFO L375 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-10-01 00:27:58,588 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:58,588 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:58,588 INFO L82 PathProgramCache]: Analyzing trace with hash -59357213, now seen corresponding path program 126 times [2018-10-01 00:27:58,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:58,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:58,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:58,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:58,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:59,312 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:59,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:59,319 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:59,466 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2018-10-01 00:27:59,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:59,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:59,729 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:59,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-10-01 00:27:59,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-10-01 00:27:59,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-10-01 00:27:59,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:59,731 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-10-01 00:28:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:00,588 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 00:28:00,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 00:28:00,588 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-10-01 00:28:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:00,589 INFO L225 Difference]: With dead ends: 133 [2018-10-01 00:28:00,589 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 00:28:00,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:00,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 00:28:00,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 00:28:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 00:28:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-01 00:28:00,592 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-10-01 00:28:00,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:00,592 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-01 00:28:00,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-10-01 00:28:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-01 00:28:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-01 00:28:00,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:00,593 INFO L375 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-10-01 00:28:00,593 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:00,594 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:00,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1840071796, now seen corresponding path program 127 times [2018-10-01 00:28:00,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:00,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:00,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:00,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:00,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:01,335 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:01,335 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:01,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:01,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:01,700 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:01,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-10-01 00:28:01,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 00:28:01,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 00:28:01,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:01,702 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-10-01 00:28:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:02,758 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-10-01 00:28:02,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 00:28:02,758 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-10-01 00:28:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:02,759 INFO L225 Difference]: With dead ends: 134 [2018-10-01 00:28:02,759 INFO L226 Difference]: Without dead ends: 132 [2018-10-01 00:28:02,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-01 00:28:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-10-01 00:28:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-01 00:28:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-01 00:28:02,762 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-10-01 00:28:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:02,763 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-01 00:28:02,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 00:28:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-01 00:28:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-01 00:28:02,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:02,764 INFO L375 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-10-01 00:28:02,764 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:02,764 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:02,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1207649021, now seen corresponding path program 128 times [2018-10-01 00:28:02,764 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:02,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:02,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:02,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:02,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:03,538 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:03,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:03,549 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:03,646 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:03,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:03,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:03,904 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:03,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-10-01 00:28:03,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-01 00:28:03,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-01 00:28:03,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:03,907 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-10-01 00:28:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:04,988 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-01 00:28:04,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 00:28:04,989 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-10-01 00:28:04,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:04,989 INFO L225 Difference]: With dead ends: 135 [2018-10-01 00:28:04,989 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 00:28:04,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 00:28:04,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-01 00:28:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-01 00:28:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-01 00:28:04,993 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-10-01 00:28:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:04,993 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-01 00:28:04,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-01 00:28:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-01 00:28:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-01 00:28:04,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:04,994 INFO L375 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-10-01 00:28:04,994 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:04,994 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:04,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1217587820, now seen corresponding path program 129 times [2018-10-01 00:28:04,995 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:04,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:04,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:04,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:04,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:05,815 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:05,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:05,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:06,003 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-10-01 00:28:06,003 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:06,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:06,288 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:06,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-10-01 00:28:06,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 00:28:06,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 00:28:06,290 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:06,290 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-10-01 00:28:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:07,391 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-10-01 00:28:07,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 00:28:07,391 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-10-01 00:28:07,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:07,392 INFO L225 Difference]: With dead ends: 136 [2018-10-01 00:28:07,392 INFO L226 Difference]: Without dead ends: 134 [2018-10-01 00:28:07,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-01 00:28:07,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-10-01 00:28:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-01 00:28:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-10-01 00:28:07,395 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-10-01 00:28:07,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:07,395 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-10-01 00:28:07,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 00:28:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-10-01 00:28:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-01 00:28:07,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:07,396 INFO L375 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-10-01 00:28:07,396 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:07,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:07,396 INFO L82 PathProgramCache]: Analyzing trace with hash -909481437, now seen corresponding path program 130 times [2018-10-01 00:28:07,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:07,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:07,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:07,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:07,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:08,398 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:08,398 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:08,404 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:08,501 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:08,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:08,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:08,775 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:08,775 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-10-01 00:28:08,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-10-01 00:28:08,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-10-01 00:28:08,777 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:08,777 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-10-01 00:28:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:09,711 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 00:28:09,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 00:28:09,712 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-10-01 00:28:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:09,712 INFO L225 Difference]: With dead ends: 137 [2018-10-01 00:28:09,712 INFO L226 Difference]: Without dead ends: 135 [2018-10-01 00:28:09,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:28:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-01 00:28:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-01 00:28:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 00:28:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-01 00:28:09,715 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-10-01 00:28:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:09,715 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-01 00:28:09,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-10-01 00:28:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-01 00:28:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 00:28:09,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:09,716 INFO L375 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-10-01 00:28:09,716 INFO L423 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:09,716 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:09,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1870848332, now seen corresponding path program 131 times [2018-10-01 00:28:09,716 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:09,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:09,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:09,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:09,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:10,461 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:10,461 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:10,468 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:10,646 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-01 00:28:10,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:10,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:10,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:10,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-10-01 00:28:10,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 00:28:10,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 00:28:10,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:10,922 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-10-01 00:28:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:11,922 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-10-01 00:28:11,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 00:28:11,922 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-10-01 00:28:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:11,923 INFO L225 Difference]: With dead ends: 138 [2018-10-01 00:28:11,923 INFO L226 Difference]: Without dead ends: 136 [2018-10-01 00:28:11,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:28:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-01 00:28:11,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-01 00:28:11,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-01 00:28:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-01 00:28:11,925 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-10-01 00:28:11,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:11,925 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-01 00:28:11,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 00:28:11,925 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-01 00:28:11,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-01 00:28:11,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:11,926 INFO L375 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-10-01 00:28:11,926 INFO L423 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:11,926 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:11,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2133242045, now seen corresponding path program 132 times [2018-10-01 00:28:11,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:11,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:11,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:11,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:11,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:12,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:12,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:12,914 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:13,075 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 00:28:13,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:13,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:13,346 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:13,346 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-10-01 00:28:13,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-10-01 00:28:13,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-10-01 00:28:13,348 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:13,348 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-10-01 00:28:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:14,056 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-01 00:28:14,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 00:28:14,057 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-10-01 00:28:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:14,057 INFO L225 Difference]: With dead ends: 139 [2018-10-01 00:28:14,057 INFO L226 Difference]: Without dead ends: 137 [2018-10-01 00:28:14,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:28:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-01 00:28:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-01 00:28:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-01 00:28:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-01 00:28:14,059 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-10-01 00:28:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:14,059 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-01 00:28:14,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-10-01 00:28:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-01 00:28:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-01 00:28:14,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:14,060 INFO L375 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-10-01 00:28:14,060 INFO L423 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:14,060 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:14,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1705992148, now seen corresponding path program 133 times [2018-10-01 00:28:14,060 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:14,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:14,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:14,061 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:14,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:14,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:14,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:14,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:14,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:15,233 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:15,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-10-01 00:28:15,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 00:28:15,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 00:28:15,235 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:15,235 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-10-01 00:28:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:16,386 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-10-01 00:28:16,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 00:28:16,387 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-10-01 00:28:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:16,387 INFO L225 Difference]: With dead ends: 140 [2018-10-01 00:28:16,387 INFO L226 Difference]: Without dead ends: 138 [2018-10-01 00:28:16,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-01 00:28:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-10-01 00:28:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-01 00:28:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-10-01 00:28:16,389 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-10-01 00:28:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:16,389 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-10-01 00:28:16,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 00:28:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-10-01 00:28:16,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 00:28:16,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:16,390 INFO L375 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-10-01 00:28:16,390 INFO L423 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:16,390 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:16,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1346147229, now seen corresponding path program 134 times [2018-10-01 00:28:16,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:16,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:16,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:16,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:16,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:17,171 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:17,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:17,177 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:17,280 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:17,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:17,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:17,621 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:17,621 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-10-01 00:28:17,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-01 00:28:17,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-01 00:28:17,623 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:17,623 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-10-01 00:28:18,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:18,842 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 00:28:18,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 00:28:18,842 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-10-01 00:28:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:18,843 INFO L225 Difference]: With dead ends: 141 [2018-10-01 00:28:18,843 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 00:28:18,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:18,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 00:28:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-01 00:28:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 00:28:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-01 00:28:18,845 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-10-01 00:28:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:18,845 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-01 00:28:18,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-01 00:28:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-01 00:28:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 00:28:18,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:18,846 INFO L375 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-10-01 00:28:18,846 INFO L423 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:18,847 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:18,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1219110668, now seen corresponding path program 135 times [2018-10-01 00:28:18,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:18,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:18,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:18,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:18,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:19,651 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:19,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:19,659 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:19,837 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-10-01 00:28:19,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:19,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:20,117 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:20,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-10-01 00:28:20,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 00:28:20,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 00:28:20,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:20,120 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-10-01 00:28:20,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:20,821 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-10-01 00:28:20,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 00:28:20,822 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-10-01 00:28:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:20,822 INFO L225 Difference]: With dead ends: 142 [2018-10-01 00:28:20,822 INFO L226 Difference]: Without dead ends: 140 [2018-10-01 00:28:20,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:20,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-01 00:28:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-01 00:28:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-01 00:28:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-10-01 00:28:20,825 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-10-01 00:28:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:20,825 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-10-01 00:28:20,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 00:28:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-10-01 00:28:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-01 00:28:20,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:20,826 INFO L375 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-10-01 00:28:20,826 INFO L423 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:20,826 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:20,827 INFO L82 PathProgramCache]: Analyzing trace with hash -862273149, now seen corresponding path program 136 times [2018-10-01 00:28:20,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:20,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:20,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:20,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:20,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:21,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:21,750 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:21,757 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:21,860 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:21,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:21,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:22,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:22,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2018-10-01 00:28:22,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-10-01 00:28:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-10-01 00:28:22,141 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:22,141 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-10-01 00:28:23,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:23,362 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-01 00:28:23,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 00:28:23,362 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-10-01 00:28:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:23,363 INFO L225 Difference]: With dead ends: 143 [2018-10-01 00:28:23,363 INFO L226 Difference]: Without dead ends: 141 [2018-10-01 00:28:23,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:23,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-01 00:28:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-01 00:28:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-01 00:28:23,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-01 00:28:23,365 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-10-01 00:28:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:23,365 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-01 00:28:23,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-10-01 00:28:23,365 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-01 00:28:23,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 00:28:23,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:23,366 INFO L375 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-10-01 00:28:23,366 INFO L423 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:23,366 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:23,366 INFO L82 PathProgramCache]: Analyzing trace with hash -960662036, now seen corresponding path program 137 times [2018-10-01 00:28:23,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:23,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:23,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:23,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:23,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:24,194 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:24,194 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:24,201 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:24,393 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-10-01 00:28:24,393 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:24,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:24,676 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:24,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-10-01 00:28:24,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 00:28:24,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 00:28:24,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:24,678 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-10-01 00:28:25,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:25,747 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-01 00:28:25,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 00:28:25,747 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-10-01 00:28:25,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:25,747 INFO L225 Difference]: With dead ends: 144 [2018-10-01 00:28:25,747 INFO L226 Difference]: Without dead ends: 142 [2018-10-01 00:28:25,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-01 00:28:25,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-01 00:28:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-01 00:28:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-01 00:28:25,750 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-10-01 00:28:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:25,750 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-01 00:28:25,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 00:28:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-01 00:28:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-01 00:28:25,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:25,750 INFO L375 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-10-01 00:28:25,751 INFO L423 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:25,751 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:25,751 INFO L82 PathProgramCache]: Analyzing trace with hash 284249763, now seen corresponding path program 138 times [2018-10-01 00:28:25,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:25,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:25,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:25,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:25,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:26,588 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:26,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:26,596 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:26,774 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2018-10-01 00:28:26,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:26,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:27,056 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:27,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2018-10-01 00:28:27,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-10-01 00:28:27,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-10-01 00:28:27,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:27,058 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-10-01 00:28:28,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:28,444 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 00:28:28,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 00:28:28,445 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-10-01 00:28:28,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:28,445 INFO L225 Difference]: With dead ends: 145 [2018-10-01 00:28:28,445 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 00:28:28,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 00:28:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-01 00:28:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 00:28:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-01 00:28:28,447 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-10-01 00:28:28,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:28,448 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-01 00:28:28,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-10-01 00:28:28,448 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-01 00:28:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 00:28:28,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:28,448 INFO L375 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-10-01 00:28:28,449 INFO L423 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:28,449 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:28,449 INFO L82 PathProgramCache]: Analyzing trace with hash 221809868, now seen corresponding path program 139 times [2018-10-01 00:28:28,449 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:28,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:28,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:28,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:28,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:29,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:29,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:29,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:29,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:29,649 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:29,649 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-10-01 00:28:29,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 00:28:29,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 00:28:29,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:29,651 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-10-01 00:28:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:30,772 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-01 00:28:30,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 00:28:30,772 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-10-01 00:28:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:30,773 INFO L225 Difference]: With dead ends: 146 [2018-10-01 00:28:30,773 INFO L226 Difference]: Without dead ends: 144 [2018-10-01 00:28:30,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-01 00:28:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-10-01 00:28:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-01 00:28:30,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-10-01 00:28:30,775 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-10-01 00:28:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:30,775 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-10-01 00:28:30,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 00:28:30,775 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-10-01 00:28:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 00:28:30,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:30,776 INFO L375 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-10-01 00:28:30,776 INFO L423 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:30,776 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:30,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1713826877, now seen corresponding path program 140 times [2018-10-01 00:28:30,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:30,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:30,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:30,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:30,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:31,635 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:31,635 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:31,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:31,751 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:31,751 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:31,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:32,042 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:32,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2018-10-01 00:28:32,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-10-01 00:28:32,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-10-01 00:28:32,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:32,044 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-10-01 00:28:33,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:33,485 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-01 00:28:33,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 00:28:33,486 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-10-01 00:28:33,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:33,486 INFO L225 Difference]: With dead ends: 147 [2018-10-01 00:28:33,486 INFO L226 Difference]: Without dead ends: 145 [2018-10-01 00:28:33,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:33,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-01 00:28:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-01 00:28:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 00:28:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-01 00:28:33,488 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-10-01 00:28:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:33,488 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-01 00:28:33,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-10-01 00:28:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-01 00:28:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-01 00:28:33,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:33,489 INFO L375 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-10-01 00:28:33,489 INFO L423 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:33,489 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:33,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1589023828, now seen corresponding path program 141 times [2018-10-01 00:28:33,489 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:33,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:33,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:33,490 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:33,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:34,327 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:34,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:34,333 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:34,520 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2018-10-01 00:28:34,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:34,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:34,802 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:34,803 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-10-01 00:28:34,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 00:28:34,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 00:28:34,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:34,805 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-10-01 00:28:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:35,654 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-10-01 00:28:35,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 00:28:35,654 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-10-01 00:28:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:35,654 INFO L225 Difference]: With dead ends: 148 [2018-10-01 00:28:35,654 INFO L226 Difference]: Without dead ends: 146 [2018-10-01 00:28:35,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:28:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-01 00:28:35,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-01 00:28:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-01 00:28:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-01 00:28:35,657 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-10-01 00:28:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:35,658 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-01 00:28:35,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 00:28:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-01 00:28:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-01 00:28:35,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:35,658 INFO L375 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-10-01 00:28:35,659 INFO L423 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:35,659 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:35,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2015096605, now seen corresponding path program 142 times [2018-10-01 00:28:35,659 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:35,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:35,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:35,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:35,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:36,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:36,505 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:36,514 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:36,636 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:36,636 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:36,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:36,952 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:36,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2018-10-01 00:28:36,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-10-01 00:28:36,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-10-01 00:28:36,954 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:36,955 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-10-01 00:28:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:38,498 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 00:28:38,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 00:28:38,498 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-10-01 00:28:38,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:38,499 INFO L225 Difference]: With dead ends: 149 [2018-10-01 00:28:38,499 INFO L226 Difference]: Without dead ends: 147 [2018-10-01 00:28:38,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-01 00:28:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-01 00:28:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-01 00:28:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-01 00:28:38,501 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-10-01 00:28:38,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:38,501 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-01 00:28:38,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-10-01 00:28:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-01 00:28:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 00:28:38,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:38,502 INFO L375 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-10-01 00:28:38,502 INFO L423 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:38,502 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:38,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1956516492, now seen corresponding path program 143 times [2018-10-01 00:28:38,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:38,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:38,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:38,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:38,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:39,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:39,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:39,376 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:39,580 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-01 00:28:39,581 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:39,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:39,876 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:39,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2018-10-01 00:28:39,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 00:28:39,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 00:28:39,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:39,879 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-10-01 00:28:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:41,295 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-10-01 00:28:41,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 00:28:41,295 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-10-01 00:28:41,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:41,295 INFO L225 Difference]: With dead ends: 150 [2018-10-01 00:28:41,295 INFO L226 Difference]: Without dead ends: 148 [2018-10-01 00:28:41,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-01 00:28:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-01 00:28:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-01 00:28:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-01 00:28:41,298 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-10-01 00:28:41,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:41,298 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-01 00:28:41,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 00:28:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-01 00:28:41,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-01 00:28:41,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:41,298 INFO L375 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-10-01 00:28:41,298 INFO L423 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:41,299 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:41,299 INFO L82 PathProgramCache]: Analyzing trace with hash 522470915, now seen corresponding path program 144 times [2018-10-01 00:28:41,299 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:41,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:41,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:41,299 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:41,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:42,146 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:42,147 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:42,153 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:42,342 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 00:28:42,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:42,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:42,634 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:42,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 146 [2018-10-01 00:28:42,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-10-01 00:28:42,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-10-01 00:28:42,637 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:42,637 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-10-01 00:28:43,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:43,669 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-01 00:28:43,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 00:28:43,670 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-10-01 00:28:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:43,670 INFO L225 Difference]: With dead ends: 151 [2018-10-01 00:28:43,670 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 00:28:43,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 00:28:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-01 00:28:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 00:28:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-01 00:28:43,673 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-10-01 00:28:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:43,673 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-01 00:28:43,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-10-01 00:28:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-01 00:28:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 00:28:43,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:43,674 INFO L375 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-10-01 00:28:43,674 INFO L423 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:43,674 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:43,674 INFO L82 PathProgramCache]: Analyzing trace with hash -983269012, now seen corresponding path program 145 times [2018-10-01 00:28:43,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:43,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:43,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:43,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:43,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:44,571 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:44,571 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:44,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:44,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:44,987 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:44,988 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2018-10-01 00:28:44,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 00:28:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 00:28:44,990 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:44,990 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-10-01 00:28:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:46,545 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-10-01 00:28:46,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 00:28:46,545 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-10-01 00:28:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:46,546 INFO L225 Difference]: With dead ends: 152 [2018-10-01 00:28:46,546 INFO L226 Difference]: Without dead ends: 150 [2018-10-01 00:28:46,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:46,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-01 00:28:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-01 00:28:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-01 00:28:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-01 00:28:46,548 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-10-01 00:28:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:46,548 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-01 00:28:46,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 00:28:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-01 00:28:46,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-01 00:28:46,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:46,549 INFO L375 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-10-01 00:28:46,549 INFO L423 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:46,549 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:46,549 INFO L82 PathProgramCache]: Analyzing trace with hash -416566493, now seen corresponding path program 146 times [2018-10-01 00:28:46,549 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:46,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:46,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:46,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:46,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:47,461 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:47,462 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:47,469 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:47,578 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:47,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:47,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:47,872 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:47,872 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 148 [2018-10-01 00:28:47,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-10-01 00:28:47,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-10-01 00:28:47,874 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:47,874 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-10-01 00:28:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:49,494 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 00:28:49,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 00:28:49,494 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-10-01 00:28:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:49,495 INFO L225 Difference]: With dead ends: 153 [2018-10-01 00:28:49,495 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 00:28:49,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:49,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 00:28:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 00:28:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 00:28:49,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-01 00:28:49,497 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-10-01 00:28:49,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:49,497 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-01 00:28:49,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-10-01 00:28:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-01 00:28:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-01 00:28:49,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:49,498 INFO L375 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-10-01 00:28:49,498 INFO L423 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:49,498 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:49,498 INFO L82 PathProgramCache]: Analyzing trace with hash -28657588, now seen corresponding path program 147 times [2018-10-01 00:28:49,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:49,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:49,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:49,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:49,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:50,402 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:50,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:50,410 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:50,602 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 75 check-sat command(s) [2018-10-01 00:28:50,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:50,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:50,905 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:50,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 149 [2018-10-01 00:28:50,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 00:28:50,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 00:28:50,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:50,907 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-10-01 00:28:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:52,574 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-01 00:28:52,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 00:28:52,575 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-10-01 00:28:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:52,575 INFO L225 Difference]: With dead ends: 154 [2018-10-01 00:28:52,575 INFO L226 Difference]: Without dead ends: 152 [2018-10-01 00:28:52,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-01 00:28:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-10-01 00:28:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-01 00:28:52,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-10-01 00:28:52,577 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-10-01 00:28:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:52,578 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-10-01 00:28:52,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 00:28:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-10-01 00:28:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-01 00:28:52,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:52,578 INFO L375 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-10-01 00:28:52,578 INFO L423 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:52,578 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:52,579 INFO L82 PathProgramCache]: Analyzing trace with hash -888383421, now seen corresponding path program 148 times [2018-10-01 00:28:52,579 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:52,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:52,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:52,579 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:52,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:53,655 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:53,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:53,662 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:53,777 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:53,777 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:53,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:54,071 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:54,072 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 150 [2018-10-01 00:28:54,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-10-01 00:28:54,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-10-01 00:28:54,074 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:54,074 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-10-01 00:28:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:55,396 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-01 00:28:55,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 00:28:55,396 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-10-01 00:28:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:55,397 INFO L225 Difference]: With dead ends: 155 [2018-10-01 00:28:55,397 INFO L226 Difference]: Without dead ends: 153 [2018-10-01 00:28:55,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:28:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-01 00:28:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-01 00:28:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-01 00:28:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-01 00:28:55,399 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-10-01 00:28:55,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:55,399 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-01 00:28:55,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-10-01 00:28:55,399 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-01 00:28:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 00:28:55,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:55,400 INFO L375 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-10-01 00:28:55,400 INFO L423 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:55,400 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:55,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1770080468, now seen corresponding path program 149 times [2018-10-01 00:28:55,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:55,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:55,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:55,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:55,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:56,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:56,313 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:56,320 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:56,541 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2018-10-01 00:28:56,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:56,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:56,841 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:56,841 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 151 [2018-10-01 00:28:56,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 00:28:56,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 00:28:56,843 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:56,843 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-10-01 00:28:57,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:57,838 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-01 00:28:57,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 00:28:57,839 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-10-01 00:28:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:57,839 INFO L225 Difference]: With dead ends: 156 [2018-10-01 00:28:57,839 INFO L226 Difference]: Without dead ends: 154 [2018-10-01 00:28:57,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-01 00:28:57,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-01 00:28:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-01 00:28:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-01 00:28:57,841 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-10-01 00:28:57,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:57,842 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-01 00:28:57,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 00:28:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-01 00:28:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-01 00:28:57,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:57,842 INFO L375 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-10-01 00:28:57,842 INFO L423 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:57,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:57,843 INFO L82 PathProgramCache]: Analyzing trace with hash 962082147, now seen corresponding path program 150 times [2018-10-01 00:28:57,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:57,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:57,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:57,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:57,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:58,990 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:58,990 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:58,997 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:59,196 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2018-10-01 00:28:59,196 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:59,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:59,504 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:59,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 152 [2018-10-01 00:28:59,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-10-01 00:28:59,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-10-01 00:28:59,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:59,506 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-10-01 00:29:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:00,400 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 00:29:00,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 00:29:00,400 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-10-01 00:29:00,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:00,401 INFO L225 Difference]: With dead ends: 157 [2018-10-01 00:29:00,401 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 00:29:00,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:29:00,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 00:29:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-01 00:29:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 00:29:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-01 00:29:00,404 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-10-01 00:29:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:00,404 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-01 00:29:00,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-10-01 00:29:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-01 00:29:00,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-01 00:29:00,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:00,405 INFO L375 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-10-01 00:29:00,405 INFO L423 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:00,405 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:00,405 INFO L82 PathProgramCache]: Analyzing trace with hash -240222708, now seen corresponding path program 151 times [2018-10-01 00:29:00,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:00,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:00,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:00,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:00,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:01,389 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:01,389 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:01,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:01,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:01,810 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:01,810 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 153 [2018-10-01 00:29:01,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 00:29:01,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 00:29:01,812 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:01,812 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-10-01 00:29:02,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:02,702 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-10-01 00:29:02,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 00:29:02,703 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-10-01 00:29:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:02,703 INFO L225 Difference]: With dead ends: 158 [2018-10-01 00:29:02,703 INFO L226 Difference]: Without dead ends: 156 [2018-10-01 00:29:02,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:29:02,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-01 00:29:02,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-01 00:29:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-01 00:29:02,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-01 00:29:02,706 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-10-01 00:29:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:02,706 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-01 00:29:02,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 00:29:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-01 00:29:02,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-01 00:29:02,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:02,706 INFO L375 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-10-01 00:29:02,707 INFO L423 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:02,707 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:02,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1143032451, now seen corresponding path program 152 times [2018-10-01 00:29:02,707 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:02,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:02,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:02,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:02,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:03,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:03,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:03,689 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:03,804 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:03,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:03,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:04,211 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:04,211 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 154 [2018-10-01 00:29:04,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-10-01 00:29:04,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-10-01 00:29:04,213 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:04,213 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-10-01 00:29:05,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:05,147 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-01 00:29:05,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 00:29:05,147 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-10-01 00:29:05,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:05,148 INFO L225 Difference]: With dead ends: 159 [2018-10-01 00:29:05,148 INFO L226 Difference]: Without dead ends: 157 [2018-10-01 00:29:05,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-01 00:29:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-01 00:29:05,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-01 00:29:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-01 00:29:05,151 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-10-01 00:29:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:05,151 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-01 00:29:05,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-10-01 00:29:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-01 00:29:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-01 00:29:05,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:05,152 INFO L375 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-10-01 00:29:05,152 INFO L423 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:05,153 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:05,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1074269420, now seen corresponding path program 153 times [2018-10-01 00:29:05,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:05,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:05,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:05,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:05,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:06,130 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:06,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:06,139 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:06,351 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 78 check-sat command(s) [2018-10-01 00:29:06,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:06,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:06,664 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:06,664 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 155 [2018-10-01 00:29:06,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 00:29:06,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 00:29:06,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:06,666 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-10-01 00:29:07,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:07,784 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-10-01 00:29:07,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-10-01 00:29:07,785 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-10-01 00:29:07,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:07,785 INFO L225 Difference]: With dead ends: 160 [2018-10-01 00:29:07,785 INFO L226 Difference]: Without dead ends: 158 [2018-10-01 00:29:07,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:29:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-01 00:29:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-01 00:29:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-01 00:29:07,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-01 00:29:07,788 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-10-01 00:29:07,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:07,788 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-01 00:29:07,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 00:29:07,788 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-01 00:29:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-01 00:29:07,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:07,788 INFO L375 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-10-01 00:29:07,789 INFO L423 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:07,789 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:07,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1057384541, now seen corresponding path program 154 times [2018-10-01 00:29:07,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:07,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:07,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:07,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:07,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:08,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:08,795 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:08,803 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:29:08,921 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:29:08,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:08,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:09,322 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:09,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 156 [2018-10-01 00:29:09,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-10-01 00:29:09,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-10-01 00:29:09,324 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:09,324 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-10-01 00:29:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:10,837 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 00:29:10,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 00:29:10,838 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-10-01 00:29:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:10,838 INFO L225 Difference]: With dead ends: 161 [2018-10-01 00:29:10,838 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 00:29:10,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 00:29:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-01 00:29:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 00:29:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-01 00:29:10,840 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-10-01 00:29:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:10,841 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-01 00:29:10,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-10-01 00:29:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-01 00:29:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 00:29:10,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:10,841 INFO L375 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-10-01 00:29:10,841 INFO L423 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:10,841 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:10,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1580819404, now seen corresponding path program 155 times [2018-10-01 00:29:10,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:10,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:10,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:10,842 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:10,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:11,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:11,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:11,807 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:12,046 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-01 00:29:12,046 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:12,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:12,363 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:12,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 157 [2018-10-01 00:29:12,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-01 00:29:12,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-01 00:29:12,365 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:12,365 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-10-01 00:29:14,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:14,137 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-10-01 00:29:14,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-10-01 00:29:14,138 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-10-01 00:29:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:14,138 INFO L225 Difference]: With dead ends: 162 [2018-10-01 00:29:14,138 INFO L226 Difference]: Without dead ends: 160 [2018-10-01 00:29:14,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:29:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-01 00:29:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-01 00:29:14,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-01 00:29:14,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-01 00:29:14,141 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-10-01 00:29:14,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:14,141 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-01 00:29:14,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-01 00:29:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-01 00:29:14,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-01 00:29:14,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:14,141 INFO L375 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-10-01 00:29:14,142 INFO L423 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:14,142 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:14,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1760763075, now seen corresponding path program 156 times [2018-10-01 00:29:14,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:14,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:14,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:14,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:14,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:15,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:15,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:15,161 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:15,370 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 00:29:15,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:15,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:15,711 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:15,711 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 158 [2018-10-01 00:29:15,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-10-01 00:29:15,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-10-01 00:29:15,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:15,713 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-10-01 00:29:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:17,488 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-01 00:29:17,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 00:29:17,489 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-10-01 00:29:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:17,489 INFO L225 Difference]: With dead ends: 163 [2018-10-01 00:29:17,489 INFO L226 Difference]: Without dead ends: 161 [2018-10-01 00:29:17,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-01 00:29:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-01 00:29:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-01 00:29:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-01 00:29:17,492 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-10-01 00:29:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:17,492 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-01 00:29:17,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-10-01 00:29:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-01 00:29:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-01 00:29:17,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:17,492 INFO L375 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-10-01 00:29:17,493 INFO L423 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:17,493 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1250917716, now seen corresponding path program 157 times [2018-10-01 00:29:17,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:17,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:17,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:17,493 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:17,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:18,460 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:18,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:18,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:18,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:18,900 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:18,900 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 159 [2018-10-01 00:29:18,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 00:29:18,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 00:29:18,902 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:18,903 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-10-01 00:29:20,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:20,605 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-10-01 00:29:20,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-10-01 00:29:20,605 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-10-01 00:29:20,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:20,606 INFO L225 Difference]: With dead ends: 164 [2018-10-01 00:29:20,606 INFO L226 Difference]: Without dead ends: 162 [2018-10-01 00:29:20,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:29:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-01 00:29:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-10-01 00:29:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-01 00:29:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-10-01 00:29:20,608 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-10-01 00:29:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:20,609 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-10-01 00:29:20,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 00:29:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-10-01 00:29:20,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-01 00:29:20,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:20,609 INFO L375 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-10-01 00:29:20,609 INFO L423 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:20,609 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash -123741725, now seen corresponding path program 158 times [2018-10-01 00:29:20,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:20,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:20,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:20,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:20,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:21,630 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:21,630 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:21,637 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:21,757 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:21,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:21,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:22,084 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:22,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 160 [2018-10-01 00:29:22,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-10-01 00:29:22,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-10-01 00:29:22,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:22,087 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-10-01 00:29:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:23,100 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 00:29:23,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 00:29:23,100 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-10-01 00:29:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:23,100 INFO L225 Difference]: With dead ends: 165 [2018-10-01 00:29:23,100 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 00:29:23,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 00:29:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-01 00:29:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 00:29:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-01 00:29:23,103 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-10-01 00:29:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:23,103 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-01 00:29:23,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-10-01 00:29:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-01 00:29:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 00:29:23,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:23,103 INFO L375 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-10-01 00:29:23,104 INFO L423 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:23,104 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash 458975628, now seen corresponding path program 159 times [2018-10-01 00:29:23,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:23,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:23,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:23,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:23,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:24,129 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:24,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:24,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:24,414 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 81 check-sat command(s) [2018-10-01 00:29:24,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:24,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:24,848 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:24,848 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 161 [2018-10-01 00:29:24,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-01 00:29:24,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-01 00:29:24,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:24,850 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-10-01 00:29:26,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:26,696 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-10-01 00:29:26,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-10-01 00:29:26,696 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-10-01 00:29:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:26,697 INFO L225 Difference]: With dead ends: 166 [2018-10-01 00:29:26,697 INFO L226 Difference]: Without dead ends: 164 [2018-10-01 00:29:26,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-01 00:29:26,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-01 00:29:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-01 00:29:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-10-01 00:29:26,699 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-10-01 00:29:26,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:26,699 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-10-01 00:29:26,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-01 00:29:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-10-01 00:29:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-01 00:29:26,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:26,699 INFO L375 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-10-01 00:29:26,700 INFO L423 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:26,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:26,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1343344387, now seen corresponding path program 160 times [2018-10-01 00:29:26,700 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:26,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:26,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:26,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:26,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:27,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:27,700 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:27,708 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:29:27,828 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:29:27,828 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:27,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:28,155 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:28,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 162 [2018-10-01 00:29:28,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-10-01 00:29:28,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-10-01 00:29:28,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:28,157 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-10-01 00:29:30,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:30,009 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-01 00:29:30,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 00:29:30,010 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-10-01 00:29:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:30,010 INFO L225 Difference]: With dead ends: 167 [2018-10-01 00:29:30,010 INFO L226 Difference]: Without dead ends: 165 [2018-10-01 00:29:30,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:29:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-01 00:29:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-01 00:29:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-01 00:29:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-01 00:29:30,012 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-10-01 00:29:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:30,013 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-01 00:29:30,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-10-01 00:29:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-01 00:29:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 00:29:30,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:30,013 INFO L375 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-10-01 00:29:30,013 INFO L423 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:30,014 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:30,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1305995156, now seen corresponding path program 161 times [2018-10-01 00:29:30,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:30,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:30,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:30,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:30,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:31,042 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:31,042 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:31,050 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:31,303 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-10-01 00:29:31,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:31,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:31,656 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:31,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 163 [2018-10-01 00:29:31,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 00:29:31,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 00:29:31,658 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:31,658 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-10-01 00:29:32,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:32,650 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-10-01 00:29:32,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-10-01 00:29:32,651 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-10-01 00:29:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:32,651 INFO L225 Difference]: With dead ends: 168 [2018-10-01 00:29:32,651 INFO L226 Difference]: Without dead ends: 166 [2018-10-01 00:29:32,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-01 00:29:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-01 00:29:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-01 00:29:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-01 00:29:32,655 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-10-01 00:29:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:32,655 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-01 00:29:32,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 00:29:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-01 00:29:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-01 00:29:32,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:32,656 INFO L375 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-10-01 00:29:32,656 INFO L423 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:32,656 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:32,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1831142365, now seen corresponding path program 162 times [2018-10-01 00:29:32,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:32,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:32,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:32,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:32,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:33,867 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:33,867 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:33,874 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:34,094 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 82 check-sat command(s) [2018-10-01 00:29:34,094 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:34,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:34,479 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:34,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 164 [2018-10-01 00:29:34,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-10-01 00:29:34,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-10-01 00:29:34,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:34,482 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-10-01 00:29:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:36,666 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 00:29:36,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 00:29:36,667 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-10-01 00:29:36,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:36,667 INFO L225 Difference]: With dead ends: 169 [2018-10-01 00:29:36,667 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 00:29:36,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:29:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 00:29:36,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-01 00:29:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 00:29:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-01 00:29:36,669 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-10-01 00:29:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:36,670 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-01 00:29:36,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-10-01 00:29:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-01 00:29:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-01 00:29:36,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:36,670 INFO L375 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-10-01 00:29:36,670 INFO L423 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:36,671 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:36,671 INFO L82 PathProgramCache]: Analyzing trace with hash -930836660, now seen corresponding path program 163 times [2018-10-01 00:29:36,671 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:36,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:36,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:36,671 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:36,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:37,784 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:37,785 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:37,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:37,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:38,264 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:38,264 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 165 [2018-10-01 00:29:38,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-01 00:29:38,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-01 00:29:38,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:38,267 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-10-01 00:29:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:39,620 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-01 00:29:39,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-10-01 00:29:39,621 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-10-01 00:29:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:39,621 INFO L225 Difference]: With dead ends: 170 [2018-10-01 00:29:39,621 INFO L226 Difference]: Without dead ends: 168 [2018-10-01 00:29:39,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-01 00:29:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-10-01 00:29:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-01 00:29:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-10-01 00:29:39,624 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-10-01 00:29:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:39,624 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-10-01 00:29:39,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-01 00:29:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-10-01 00:29:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-01 00:29:39,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:39,624 INFO L375 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-10-01 00:29:39,625 INFO L423 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:39,625 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:39,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1208836419, now seen corresponding path program 164 times [2018-10-01 00:29:39,625 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:39,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:39,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:39,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:39,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:40,792 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:40,792 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:40,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:40,921 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:40,922 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:40,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:41,285 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:41,286 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 166 [2018-10-01 00:29:41,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-10-01 00:29:41,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-10-01 00:29:41,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:41,288 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-10-01 00:29:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:43,434 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-01 00:29:43,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 00:29:43,435 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-10-01 00:29:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:43,435 INFO L225 Difference]: With dead ends: 171 [2018-10-01 00:29:43,435 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 00:29:43,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:29:43,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 00:29:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-01 00:29:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 00:29:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-01 00:29:43,438 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-10-01 00:29:43,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:43,438 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-01 00:29:43,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-10-01 00:29:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-01 00:29:43,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 00:29:43,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:43,438 INFO L375 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-10-01 00:29:43,439 INFO L423 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:43,439 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:43,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1180774868, now seen corresponding path program 165 times [2018-10-01 00:29:43,439 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:43,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:43,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:43,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:43,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:44,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:44,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:44,526 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:44,775 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 84 check-sat command(s) [2018-10-01 00:29:44,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:44,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:45,214 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:45,214 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 167 [2018-10-01 00:29:45,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 00:29:45,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 00:29:45,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:45,216 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-10-01 00:29:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:46,513 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-01 00:29:46,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 00:29:46,513 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-10-01 00:29:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:46,514 INFO L225 Difference]: With dead ends: 172 [2018-10-01 00:29:46,514 INFO L226 Difference]: Without dead ends: 170 [2018-10-01 00:29:46,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:29:46,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-01 00:29:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-10-01 00:29:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-01 00:29:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-10-01 00:29:46,516 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-10-01 00:29:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:46,516 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-10-01 00:29:46,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 00:29:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-10-01 00:29:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-01 00:29:46,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:46,517 INFO L375 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-10-01 00:29:46,517 INFO L423 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:46,517 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:46,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2050686563, now seen corresponding path program 166 times [2018-10-01 00:29:46,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:46,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:46,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:46,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:46,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:47,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:47,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:47,625 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:29:47,752 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:29:47,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:47,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:48,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:48,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 168 [2018-10-01 00:29:48,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-10-01 00:29:48,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-10-01 00:29:48,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:48,099 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-10-01 00:29:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:50,344 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 00:29:50,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 00:29:50,344 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-10-01 00:29:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:50,345 INFO L225 Difference]: With dead ends: 173 [2018-10-01 00:29:50,345 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 00:29:50,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 00:29:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-01 00:29:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 00:29:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-01 00:29:50,347 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-10-01 00:29:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:50,348 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-01 00:29:50,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-10-01 00:29:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-01 00:29:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 00:29:50,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:50,348 INFO L375 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-10-01 00:29:50,348 INFO L423 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:50,348 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:50,349 INFO L82 PathProgramCache]: Analyzing trace with hash -853224180, now seen corresponding path program 167 times [2018-10-01 00:29:50,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:50,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:50,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:50,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:50,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:51,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:51,430 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:51,438 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:51,706 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-01 00:29:51,707 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:51,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:52,051 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:52,051 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 169 [2018-10-01 00:29:52,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-10-01 00:29:52,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-10-01 00:29:52,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:52,053 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-10-01 00:29:53,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:53,295 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-10-01 00:29:53,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-10-01 00:29:53,295 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-10-01 00:29:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:53,296 INFO L225 Difference]: With dead ends: 174 [2018-10-01 00:29:53,296 INFO L226 Difference]: Without dead ends: 172 [2018-10-01 00:29:53,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-01 00:29:53,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-10-01 00:29:53,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-01 00:29:53,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-01 00:29:53,298 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-10-01 00:29:53,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:53,299 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-01 00:29:53,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-10-01 00:29:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-01 00:29:53,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-01 00:29:53,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:53,299 INFO L375 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-10-01 00:29:53,299 INFO L423 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:53,299 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:53,300 INFO L82 PathProgramCache]: Analyzing trace with hash -680143997, now seen corresponding path program 168 times [2018-10-01 00:29:53,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:53,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:53,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:53,300 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:53,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:54,384 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:54,384 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:54,392 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:54,627 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 00:29:54,628 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:54,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:55,129 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:55,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 170 [2018-10-01 00:29:55,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-10-01 00:29:55,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-10-01 00:29:55,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:55,132 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-10-01 00:29:57,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:57,264 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-01 00:29:57,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 00:29:57,265 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-10-01 00:29:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:57,265 INFO L225 Difference]: With dead ends: 175 [2018-10-01 00:29:57,265 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 00:29:57,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:29:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 00:29:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-01 00:29:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-01 00:29:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-01 00:29:57,268 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-10-01 00:29:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:57,268 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-01 00:29:57,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-10-01 00:29:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-01 00:29:57,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-01 00:29:57,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:57,269 INFO L375 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-10-01 00:29:57,269 INFO L423 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:57,269 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:57,269 INFO L82 PathProgramCache]: Analyzing trace with hash 390374380, now seen corresponding path program 169 times [2018-10-01 00:29:57,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:57,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:57,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:57,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:57,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:58,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:58,344 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:58,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:58,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:58,819 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:58,819 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 171 [2018-10-01 00:29:58,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 00:29:58,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 00:29:58,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:58,822 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-10-01 00:30:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:00,833 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-10-01 00:30:00,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-10-01 00:30:00,833 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-10-01 00:30:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:00,834 INFO L225 Difference]: With dead ends: 176 [2018-10-01 00:30:00,834 INFO L226 Difference]: Without dead ends: 174 [2018-10-01 00:30:00,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:30:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-01 00:30:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-10-01 00:30:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-01 00:30:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-01 00:30:00,836 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-10-01 00:30:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:00,837 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-01 00:30:00,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 00:30:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-01 00:30:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 00:30:00,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:00,837 INFO L375 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-10-01 00:30:00,837 INFO L423 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:00,837 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:00,838 INFO L82 PathProgramCache]: Analyzing trace with hash -783294301, now seen corresponding path program 170 times [2018-10-01 00:30:00,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:00,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:00,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:00,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:00,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:01,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:01,987 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:01,996 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:30:02,126 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:30:02,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:02,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:02,482 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:02,482 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 172 [2018-10-01 00:30:02,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-10-01 00:30:02,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-10-01 00:30:02,485 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:02,486 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-10-01 00:30:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:03,779 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 00:30:03,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 00:30:03,780 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-10-01 00:30:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:03,780 INFO L225 Difference]: With dead ends: 177 [2018-10-01 00:30:03,780 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 00:30:03,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:30:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 00:30:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-01 00:30:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 00:30:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-01 00:30:03,783 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-10-01 00:30:03,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:03,784 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-01 00:30:03,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-10-01 00:30:03,784 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-01 00:30:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-01 00:30:03,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:03,785 INFO L375 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-10-01 00:30:03,785 INFO L423 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:03,785 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1487682252, now seen corresponding path program 171 times [2018-10-01 00:30:03,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:03,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:03,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:03,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:03,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:04,927 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:04,927 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:04,935 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:30:05,189 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 87 check-sat command(s) [2018-10-01 00:30:05,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:05,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:05,672 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:05,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 173 [2018-10-01 00:30:05,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-10-01 00:30:05,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-10-01 00:30:05,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:05,675 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-10-01 00:30:06,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:06,959 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-10-01 00:30:06,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-10-01 00:30:06,959 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-10-01 00:30:06,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:06,959 INFO L225 Difference]: With dead ends: 178 [2018-10-01 00:30:06,960 INFO L226 Difference]: Without dead ends: 176 [2018-10-01 00:30:06,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:30:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-01 00:30:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-01 00:30:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-01 00:30:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-10-01 00:30:06,963 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-10-01 00:30:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:06,964 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-10-01 00:30:06,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-10-01 00:30:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-10-01 00:30:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-01 00:30:06,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:06,964 INFO L375 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-10-01 00:30:06,964 INFO L423 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:06,964 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:06,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1126488637, now seen corresponding path program 172 times [2018-10-01 00:30:06,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:06,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:06,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:06,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:06,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:08,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:08,092 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:08,099 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:30:08,227 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:30:08,228 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:08,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:08,578 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:08,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 174 [2018-10-01 00:30:08,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-10-01 00:30:08,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-10-01 00:30:08,581 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:08,581 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-10-01 00:30:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:10,890 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-01 00:30:10,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 00:30:10,891 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-10-01 00:30:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:10,891 INFO L225 Difference]: With dead ends: 179 [2018-10-01 00:30:10,891 INFO L226 Difference]: Without dead ends: 177 [2018-10-01 00:30:10,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:30:10,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-01 00:30:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-01 00:30:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-01 00:30:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-01 00:30:10,894 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-10-01 00:30:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:10,894 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-01 00:30:10,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-10-01 00:30:10,894 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-01 00:30:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-01 00:30:10,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:10,894 INFO L375 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-10-01 00:30:10,895 INFO L423 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:10,895 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:10,895 INFO L82 PathProgramCache]: Analyzing trace with hash -561407572, now seen corresponding path program 173 times [2018-10-01 00:30:10,895 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:10,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:10,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:10,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:10,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:12,045 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:12,045 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:12,052 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:30:12,332 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2018-10-01 00:30:12,332 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:12,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:12,723 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:12,723 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175, 175] total 175 [2018-10-01 00:30:12,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 00:30:12,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 00:30:12,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:12,726 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-10-01 00:30:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:15,146 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-10-01 00:30:15,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-10-01 00:30:15,146 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-10-01 00:30:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:15,147 INFO L225 Difference]: With dead ends: 180 [2018-10-01 00:30:15,147 INFO L226 Difference]: Without dead ends: 178 [2018-10-01 00:30:15,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:30:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-01 00:30:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-01 00:30:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-01 00:30:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-01 00:30:15,149 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-10-01 00:30:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:15,149 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-01 00:30:15,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 00:30:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-01 00:30:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-01 00:30:15,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:15,150 INFO L375 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-10-01 00:30:15,150 INFO L423 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:15,150 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:15,150 INFO L82 PathProgramCache]: Analyzing trace with hash -223763741, now seen corresponding path program 174 times [2018-10-01 00:30:15,150 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:15,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:15,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:15,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:15,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:16,553 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:16,553 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 00:30:16,567 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:16,817 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 88 check-sat command(s) [2018-10-01 00:30:16,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:16,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:17,166 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:17,166 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 176] total 176 [2018-10-01 00:30:17,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-10-01 00:30:17,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-10-01 00:30:17,168 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:17,168 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-10-01 00:30:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:19,702 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 00:30:19,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-01 00:30:19,702 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-10-01 00:30:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:19,703 INFO L225 Difference]: With dead ends: 181 [2018-10-01 00:30:19,703 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 00:30:19,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:30:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 00:30:19,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-01 00:30:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 00:30:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-01 00:30:19,706 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-10-01 00:30:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:19,706 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-01 00:30:19,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-10-01 00:30:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-01 00:30:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 00:30:19,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:19,706 INFO L375 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-10-01 00:30:19,707 INFO L423 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:19,707 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:19,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1653260428, now seen corresponding path program 175 times [2018-10-01 00:30:19,707 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:19,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:19,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:19,707 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:19,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:21,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:21,115 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:21,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:21,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:21,621 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:21,621 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177, 177] total 177 [2018-10-01 00:30:21,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-10-01 00:30:21,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-10-01 00:30:21,624 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:21,624 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-10-01 00:30:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:24,156 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-01 00:30:24,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-10-01 00:30:24,156 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-10-01 00:30:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:24,157 INFO L225 Difference]: With dead ends: 182 [2018-10-01 00:30:24,157 INFO L226 Difference]: Without dead ends: 180 [2018-10-01 00:30:24,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:30:24,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-01 00:30:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-10-01 00:30:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-01 00:30:24,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-10-01 00:30:24,159 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-10-01 00:30:24,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:24,159 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-10-01 00:30:24,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-10-01 00:30:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-10-01 00:30:24,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-01 00:30:24,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:24,160 INFO L375 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-10-01 00:30:24,160 INFO L423 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:24,160 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:24,160 INFO L82 PathProgramCache]: Analyzing trace with hash -288532477, now seen corresponding path program 176 times [2018-10-01 00:30:24,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:24,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:24,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:24,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:24,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:25,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:25,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:25,323 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:30:25,456 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:30:25,456 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:25,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:26,059 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:26,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178, 178] total 178 [2018-10-01 00:30:26,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-10-01 00:30:26,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-10-01 00:30:26,062 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:26,062 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-10-01 00:30:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:28,027 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-01 00:30:28,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 00:30:28,034 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-10-01 00:30:28,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:28,034 INFO L225 Difference]: With dead ends: 183 [2018-10-01 00:30:28,034 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 00:30:28,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:30:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 00:30:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 00:30:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 00:30:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-01 00:30:28,038 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-10-01 00:30:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:28,038 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-01 00:30:28,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-10-01 00:30:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-01 00:30:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-01 00:30:28,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:28,039 INFO L375 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-10-01 00:30:28,039 INFO L423 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:28,039 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:28,039 INFO L82 PathProgramCache]: Analyzing trace with hash -354570388, now seen corresponding path program 177 times [2018-10-01 00:30:28,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:28,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:28,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:28,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:28,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:29,217 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:29,217 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:29,226 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:30:29,487 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 90 check-sat command(s) [2018-10-01 00:30:29,487 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:29,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:29,868 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:29,868 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179, 179] total 179 [2018-10-01 00:30:29,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 00:30:29,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 00:30:29,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:29,871 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-10-01 00:30:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:32,136 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-10-01 00:30:32,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-10-01 00:30:32,137 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-10-01 00:30:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:32,137 INFO L225 Difference]: With dead ends: 184 [2018-10-01 00:30:32,137 INFO L226 Difference]: Without dead ends: 182 [2018-10-01 00:30:32,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:30:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-01 00:30:32,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-10-01 00:30:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-01 00:30:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-10-01 00:30:32,140 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-10-01 00:30:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:32,141 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-10-01 00:30:32,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 00:30:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-10-01 00:30:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-01 00:30:32,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:32,141 INFO L375 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-10-01 00:30:32,141 INFO L423 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:32,142 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:32,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1893221667, now seen corresponding path program 178 times [2018-10-01 00:30:32,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:32,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:32,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:32,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:32,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:33,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:33,353 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:33,361 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:30:33,499 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:30:33,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:33,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:33,868 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:33,868 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180, 180] total 180 [2018-10-01 00:30:33,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-10-01 00:30:33,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-10-01 00:30:33,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:33,871 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-10-01 00:30:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:36,356 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 00:30:36,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-10-01 00:30:36,356 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-10-01 00:30:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:36,357 INFO L225 Difference]: With dead ends: 185 [2018-10-01 00:30:36,357 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 00:30:36,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:30:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 00:30:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-01 00:30:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-01 00:30:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-01 00:30:36,359 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-10-01 00:30:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:36,359 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-01 00:30:36,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-10-01 00:30:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-01 00:30:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 00:30:36,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:36,360 INFO L375 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-10-01 00:30:36,360 INFO L423 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:36,360 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:36,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1439668660, now seen corresponding path program 179 times [2018-10-01 00:30:36,361 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:36,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:36,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:36,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:36,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:37,531 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:37,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:37,538 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:30:37,834 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-01 00:30:37,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:37,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:38,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:38,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181, 181] total 181 [2018-10-01 00:30:38,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-10-01 00:30:38,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-10-01 00:30:38,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:38,232 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-10-01 00:30:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:40,963 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-10-01 00:30:40,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-10-01 00:30:40,963 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-10-01 00:30:40,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:40,964 INFO L225 Difference]: With dead ends: 186 [2018-10-01 00:30:40,964 INFO L226 Difference]: Without dead ends: 184 [2018-10-01 00:30:40,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:30:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-01 00:30:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-01 00:30:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-01 00:30:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-01 00:30:40,967 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-10-01 00:30:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:40,967 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-01 00:30:40,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-10-01 00:30:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-01 00:30:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-01 00:30:40,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:40,968 INFO L375 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-10-01 00:30:40,968 INFO L423 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:40,968 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:40,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1680053693, now seen corresponding path program 180 times [2018-10-01 00:30:40,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:40,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:40,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:40,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:40,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:42,361 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:42,361 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:42,368 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:30:42,631 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 00:30:42,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:42,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:43,006 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:43,006 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182, 182] total 182 [2018-10-01 00:30:43,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-10-01 00:30:43,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-10-01 00:30:43,009 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:43,009 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-10-01 00:30:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:45,629 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-01 00:30:45,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-10-01 00:30:45,629 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-10-01 00:30:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:45,630 INFO L225 Difference]: With dead ends: 187 [2018-10-01 00:30:45,630 INFO L226 Difference]: Without dead ends: 185 [2018-10-01 00:30:45,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:30:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-01 00:30:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-01 00:30:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 00:30:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-01 00:30:45,634 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-10-01 00:30:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:45,634 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-01 00:30:45,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-10-01 00:30:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-01 00:30:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-01 00:30:45,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:45,635 INFO L375 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-10-01 00:30:45,635 INFO L423 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:45,635 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:45,635 INFO L82 PathProgramCache]: Analyzing trace with hash -542055124, now seen corresponding path program 181 times [2018-10-01 00:30:45,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:45,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:45,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:45,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:45,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:47,151 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:47,151 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:47,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:47,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:47,704 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:47,705 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183, 183] total 183 [2018-10-01 00:30:47,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 00:30:47,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 00:30:47,707 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:47,707 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-10-01 00:30:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:50,315 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-10-01 00:30:50,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-10-01 00:30:50,315 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-10-01 00:30:50,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:50,316 INFO L225 Difference]: With dead ends: 188 [2018-10-01 00:30:50,316 INFO L226 Difference]: Without dead ends: 186 [2018-10-01 00:30:50,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:30:50,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-01 00:30:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-01 00:30:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-01 00:30:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-10-01 00:30:50,318 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-10-01 00:30:50,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:50,318 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-10-01 00:30:50,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 00:30:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-10-01 00:30:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-01 00:30:50,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:50,319 INFO L375 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-10-01 00:30:50,319 INFO L423 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:50,319 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:50,319 INFO L82 PathProgramCache]: Analyzing trace with hash 376162147, now seen corresponding path program 182 times [2018-10-01 00:30:50,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:50,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:50,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:50,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:50,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:51,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:51,721 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:51,729 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:30:51,872 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:30:51,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:51,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:52,251 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:52,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184, 184] total 184 [2018-10-01 00:30:52,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-10-01 00:30:52,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-10-01 00:30:52,254 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:52,254 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-10-01 00:30:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:53,735 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 00:30:53,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-10-01 00:30:53,736 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-10-01 00:30:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:53,736 INFO L225 Difference]: With dead ends: 189 [2018-10-01 00:30:53,736 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 00:30:53,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:30:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 00:30:53,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-01 00:30:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 00:30:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-01 00:30:53,739 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-10-01 00:30:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:53,739 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-01 00:30:53,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-10-01 00:30:53,739 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-01 00:30:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-01 00:30:53,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:53,740 INFO L375 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-10-01 00:30:53,740 INFO L423 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:53,740 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1223873524, now seen corresponding path program 183 times [2018-10-01 00:30:53,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:53,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:53,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:53,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:53,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:54,989 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:54,989 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:54,996 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:30:55,271 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2018-10-01 00:30:55,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:55,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:55,641 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:55,642 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185, 185] total 185 [2018-10-01 00:30:55,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-10-01 00:30:55,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-10-01 00:30:55,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:55,644 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-10-01 00:30:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:57,106 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-10-01 00:30:57,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-10-01 00:30:57,107 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-10-01 00:30:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:57,107 INFO L225 Difference]: With dead ends: 190 [2018-10-01 00:30:57,107 INFO L226 Difference]: Without dead ends: 188 [2018-10-01 00:30:57,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:30:57,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-01 00:30:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-10-01 00:30:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-10-01 00:30:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-10-01 00:30:57,110 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-10-01 00:30:57,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:57,110 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-10-01 00:30:57,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-10-01 00:30:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-10-01 00:30:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-01 00:30:57,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:57,111 INFO L375 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-10-01 00:30:57,111 INFO L423 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:57,111 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:57,111 INFO L82 PathProgramCache]: Analyzing trace with hash 714628227, now seen corresponding path program 184 times [2018-10-01 00:30:57,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:57,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:57,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:57,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:57,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:58,375 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:58,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:58,382 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:30:58,527 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:30:58,527 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:58,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:58,932 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:58,932 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186, 186] total 186 [2018-10-01 00:30:58,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-10-01 00:30:58,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-10-01 00:30:58,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:58,936 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-10-01 00:31:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:01,835 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-01 00:31:01,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-10-01 00:31:01,835 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-10-01 00:31:01,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:01,835 INFO L225 Difference]: With dead ends: 191 [2018-10-01 00:31:01,835 INFO L226 Difference]: Without dead ends: 189 [2018-10-01 00:31:01,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:31:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-01 00:31:01,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-01 00:31:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-01 00:31:01,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-01 00:31:01,838 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-10-01 00:31:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:01,838 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-01 00:31:01,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-10-01 00:31:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-01 00:31:01,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 00:31:01,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:01,839 INFO L375 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-10-01 00:31:01,839 INFO L423 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:01,839 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:01,839 INFO L82 PathProgramCache]: Analyzing trace with hash 678640364, now seen corresponding path program 185 times [2018-10-01 00:31:01,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:01,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:01,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:01,840 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:01,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:03,111 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:03,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:03,118 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:31:03,428 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2018-10-01 00:31:03,428 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:03,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:03,835 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:03,835 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187, 187] total 187 [2018-10-01 00:31:03,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 00:31:03,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 00:31:03,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:03,838 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-10-01 00:31:06,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:06,694 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-10-01 00:31:06,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-10-01 00:31:06,695 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-10-01 00:31:06,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:06,695 INFO L225 Difference]: With dead ends: 192 [2018-10-01 00:31:06,695 INFO L226 Difference]: Without dead ends: 190 [2018-10-01 00:31:06,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:31:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-01 00:31:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-10-01 00:31:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-01 00:31:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-10-01 00:31:06,698 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-10-01 00:31:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:06,698 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-10-01 00:31:06,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 00:31:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-10-01 00:31:06,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-01 00:31:06,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:06,699 INFO L375 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-10-01 00:31:06,699 INFO L423 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:06,699 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:06,699 INFO L82 PathProgramCache]: Analyzing trace with hash -436983389, now seen corresponding path program 186 times [2018-10-01 00:31:06,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:06,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:06,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:06,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:06,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:08,079 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:08,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:08,085 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:31:08,366 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 94 check-sat command(s) [2018-10-01 00:31:08,366 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:08,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:08,770 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:08,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188, 188] total 188 [2018-10-01 00:31:08,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-10-01 00:31:08,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-10-01 00:31:08,773 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:08,773 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-10-01 00:31:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:10,128 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 00:31:10,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-10-01 00:31:10,128 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-10-01 00:31:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:10,129 INFO L225 Difference]: With dead ends: 193 [2018-10-01 00:31:10,129 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 00:31:10,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:31:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 00:31:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 00:31:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 00:31:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-01 00:31:10,131 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-10-01 00:31:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:10,131 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-01 00:31:10,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-10-01 00:31:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-01 00:31:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-01 00:31:10,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:10,132 INFO L375 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-10-01 00:31:10,132 INFO L423 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:10,132 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:10,132 INFO L82 PathProgramCache]: Analyzing trace with hash -661581364, now seen corresponding path program 187 times [2018-10-01 00:31:10,132 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:10,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:10,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:10,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:10,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:11,444 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:11,444 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:11,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:11,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:12,206 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:12,206 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189, 189] total 189 [2018-10-01 00:31:12,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-10-01 00:31:12,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-10-01 00:31:12,209 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:12,209 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-10-01 00:31:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:15,132 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-10-01 00:31:15,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-10-01 00:31:15,132 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-10-01 00:31:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:15,132 INFO L225 Difference]: With dead ends: 194 [2018-10-01 00:31:15,133 INFO L226 Difference]: Without dead ends: 192 [2018-10-01 00:31:15,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:31:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-01 00:31:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-10-01 00:31:15,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-10-01 00:31:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-10-01 00:31:15,135 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-10-01 00:31:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:15,135 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-10-01 00:31:15,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-10-01 00:31:15,136 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-10-01 00:31:15,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-01 00:31:15,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:15,136 INFO L375 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-10-01 00:31:15,136 INFO L423 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:15,136 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:15,137 INFO L82 PathProgramCache]: Analyzing trace with hash 965816003, now seen corresponding path program 188 times [2018-10-01 00:31:15,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:15,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:15,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:15,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:15,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:16,426 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:16,427 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:16,433 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:31:16,594 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:31:16,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:16,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:17,221 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:17,221 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 190] total 190 [2018-10-01 00:31:17,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-10-01 00:31:17,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-10-01 00:31:17,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:17,224 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-10-01 00:31:19,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:19,088 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-01 00:31:19,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-10-01 00:31:19,089 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-10-01 00:31:19,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:19,089 INFO L225 Difference]: With dead ends: 195 [2018-10-01 00:31:19,090 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 00:31:19,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:31:19,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 00:31:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-01 00:31:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-01 00:31:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-01 00:31:19,093 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-10-01 00:31:19,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:19,093 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-01 00:31:19,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-10-01 00:31:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-01 00:31:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-01 00:31:19,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:19,094 INFO L375 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-10-01 00:31:19,095 INFO L423 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:19,095 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:19,095 INFO L82 PathProgramCache]: Analyzing trace with hash -124473172, now seen corresponding path program 189 times [2018-10-01 00:31:19,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:19,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:19,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:19,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:19,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:20,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:20,637 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:20,645 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:31:20,943 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 96 check-sat command(s) [2018-10-01 00:31:20,943 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:20,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:21,354 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:21,355 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191] total 191 [2018-10-01 00:31:21,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 00:31:21,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 00:31:21,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:21,357 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-10-01 00:31:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:23,995 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-01 00:31:23,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-10-01 00:31:23,996 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-10-01 00:31:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:23,996 INFO L225 Difference]: With dead ends: 196 [2018-10-01 00:31:23,996 INFO L226 Difference]: Without dead ends: 194 [2018-10-01 00:31:23,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:31:23,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-01 00:31:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-10-01 00:31:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-01 00:31:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-10-01 00:31:23,999 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-10-01 00:31:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:23,999 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-10-01 00:31:23,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 00:31:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-10-01 00:31:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-01 00:31:24,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:24,000 INFO L375 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-10-01 00:31:24,000 INFO L423 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:24,000 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:24,000 INFO L82 PathProgramCache]: Analyzing trace with hash 436300771, now seen corresponding path program 190 times [2018-10-01 00:31:24,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:24,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:24,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:24,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:24,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:25,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:25,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:25,322 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:31:25,467 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:31:25,468 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:25,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:25,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:25,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 192 [2018-10-01 00:31:25,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-10-01 00:31:25,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-10-01 00:31:25,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:25,858 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-10-01 00:31:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:27,697 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 00:31:27,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-10-01 00:31:27,697 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-10-01 00:31:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:27,697 INFO L225 Difference]: With dead ends: 197 [2018-10-01 00:31:27,697 INFO L226 Difference]: Without dead ends: 195 [2018-10-01 00:31:27,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:31:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-01 00:31:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-01 00:31:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 00:31:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-01 00:31:27,700 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-10-01 00:31:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:27,701 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-01 00:31:27,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-10-01 00:31:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-01 00:31:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 00:31:27,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:27,701 INFO L375 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-10-01 00:31:27,701 INFO L423 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:27,702 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:27,702 INFO L82 PathProgramCache]: Analyzing trace with hash 640423820, now seen corresponding path program 191 times [2018-10-01 00:31:27,702 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:27,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:27,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:27,702 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:27,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:29,060 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:29,060 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:29,075 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:31:29,410 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-01 00:31:29,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:29,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:29,809 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:29,809 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193] total 193 [2018-10-01 00:31:29,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-10-01 00:31:29,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-10-01 00:31:29,812 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:29,812 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-10-01 00:31:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:32,614 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-01 00:31:32,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-10-01 00:31:32,614 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-10-01 00:31:32,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:32,614 INFO L225 Difference]: With dead ends: 198 [2018-10-01 00:31:32,614 INFO L226 Difference]: Without dead ends: 196 [2018-10-01 00:31:32,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:31:32,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-01 00:31:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-01 00:31:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-01 00:31:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-10-01 00:31:32,618 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-10-01 00:31:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:32,618 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-10-01 00:31:32,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-10-01 00:31:32,618 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-10-01 00:31:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-01 00:31:32,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:32,619 INFO L375 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-10-01 00:31:32,619 INFO L423 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:32,619 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:32,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1621696253, now seen corresponding path program 192 times [2018-10-01 00:31:32,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:32,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:32,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:32,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:32,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:34,201 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:34,202 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:34,216 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:31:34,502 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 00:31:34,502 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:34,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:34,890 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:34,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 194] total 194 [2018-10-01 00:31:34,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-10-01 00:31:34,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-10-01 00:31:34,894 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:34,894 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-10-01 00:31:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:36,529 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-01 00:31:36,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-10-01 00:31:36,529 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-10-01 00:31:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:36,530 INFO L225 Difference]: With dead ends: 199 [2018-10-01 00:31:36,530 INFO L226 Difference]: Without dead ends: 197 [2018-10-01 00:31:36,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:31:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-01 00:31:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-01 00:31:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-01 00:31:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-01 00:31:36,533 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-10-01 00:31:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:36,533 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-01 00:31:36,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-10-01 00:31:36,533 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-01 00:31:36,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-01 00:31:36,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:36,533 INFO L375 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-10-01 00:31:36,534 INFO L423 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:36,534 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:36,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1267025516, now seen corresponding path program 193 times [2018-10-01 00:31:36,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:36,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:36,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:36,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:36,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:38,118 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:38,118 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:38,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:38,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:38,675 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:38,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195] total 195 [2018-10-01 00:31:38,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 00:31:38,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 00:31:38,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:38,678 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-10-01 00:31:41,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:41,939 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-01 00:31:41,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-10-01 00:31:41,939 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-10-01 00:31:41,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:41,940 INFO L225 Difference]: With dead ends: 200 [2018-10-01 00:31:41,940 INFO L226 Difference]: Without dead ends: 198 [2018-10-01 00:31:41,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:31:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-01 00:31:41,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-10-01 00:31:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-01 00:31:41,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-01 00:31:41,943 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-10-01 00:31:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:41,943 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-01 00:31:41,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 00:31:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-01 00:31:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 00:31:41,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:41,944 INFO L375 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-10-01 00:31:41,944 INFO L423 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:41,944 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:41,944 INFO L82 PathProgramCache]: Analyzing trace with hash 623087139, now seen corresponding path program 194 times [2018-10-01 00:31:41,944 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:41,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:41,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:41,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:41,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:43,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:43,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:43,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:31:43,658 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:31:43,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:43,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:44,105 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:44,105 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 196] total 196 [2018-10-01 00:31:44,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-10-01 00:31:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-10-01 00:31:44,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:44,108 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-10-01 00:31:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:46,579 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 00:31:46,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-10-01 00:31:46,580 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-10-01 00:31:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:46,580 INFO L225 Difference]: With dead ends: 201 [2018-10-01 00:31:46,580 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 00:31:46,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:31:46,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 00:31:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-01 00:31:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 00:31:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-01 00:31:46,583 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-10-01 00:31:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:46,583 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-01 00:31:46,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-10-01 00:31:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-01 00:31:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 00:31:46,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:46,584 INFO L375 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-10-01 00:31:46,584 INFO L423 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:46,584 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:46,584 INFO L82 PathProgramCache]: Analyzing trace with hash 2135833932, now seen corresponding path program 195 times [2018-10-01 00:31:46,584 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:46,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:46,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:46,585 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:46,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:48,116 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:48,117 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:48,123 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:31:48,426 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 99 check-sat command(s) [2018-10-01 00:31:48,426 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:48,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:48,817 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:48,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 197 [2018-10-01 00:31:48,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-10-01 00:31:48,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-10-01 00:31:48,820 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:48,820 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-10-01 00:31:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:50,801 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-10-01 00:31:50,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-10-01 00:31:50,801 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-10-01 00:31:50,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:50,802 INFO L225 Difference]: With dead ends: 202 [2018-10-01 00:31:50,802 INFO L226 Difference]: Without dead ends: 200 [2018-10-01 00:31:50,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:31:50,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-01 00:31:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-10-01 00:31:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-01 00:31:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-01 00:31:50,805 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-10-01 00:31:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:50,805 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-01 00:31:50,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-10-01 00:31:50,805 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-01 00:31:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-01 00:31:50,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:50,806 INFO L375 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-10-01 00:31:50,806 INFO L423 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:50,806 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:50,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1786344259, now seen corresponding path program 196 times [2018-10-01 00:31:50,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:50,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:50,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:50,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:50,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:52,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:52,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:52,187 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:31:52,331 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:31:52,331 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:52,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:52,896 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:52,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 198] total 198 [2018-10-01 00:31:52,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-10-01 00:31:52,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-10-01 00:31:52,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:52,899 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-10-01 00:31:55,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:55,977 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-01 00:31:55,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-10-01 00:31:55,978 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-10-01 00:31:55,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:55,978 INFO L225 Difference]: With dead ends: 203 [2018-10-01 00:31:55,978 INFO L226 Difference]: Without dead ends: 201 [2018-10-01 00:31:55,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:31:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-01 00:31:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-01 00:31:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-01 00:31:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-01 00:31:55,982 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-10-01 00:31:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:55,983 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-01 00:31:55,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-10-01 00:31:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-01 00:31:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 00:31:55,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:55,984 INFO L375 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-10-01 00:31:55,984 INFO L423 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:55,984 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:55,984 INFO L82 PathProgramCache]: Analyzing trace with hash -457901012, now seen corresponding path program 197 times [2018-10-01 00:31:55,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:55,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:55,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:55,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:55,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:57,468 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:57,468 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:57,476 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:31:57,821 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2018-10-01 00:31:57,822 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:57,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:58,319 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:58,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 199] total 199 [2018-10-01 00:31:58,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 00:31:58,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 00:31:58,322 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:58,322 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-10-01 00:32:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:01,155 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-10-01 00:32:01,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-10-01 00:32:01,155 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-10-01 00:32:01,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:01,156 INFO L225 Difference]: With dead ends: 204 [2018-10-01 00:32:01,156 INFO L226 Difference]: Without dead ends: 202 [2018-10-01 00:32:01,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:32:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-01 00:32:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-10-01 00:32:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-01 00:32:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-01 00:32:01,158 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-10-01 00:32:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:01,158 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-01 00:32:01,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 00:32:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-01 00:32:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-01 00:32:01,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:01,159 INFO L375 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-10-01 00:32:01,159 INFO L423 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:01,159 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:01,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1310027677, now seen corresponding path program 198 times [2018-10-01 00:32:01,159 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:01,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:01,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:01,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:01,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:02,564 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:02,564 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:02,572 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:32:02,878 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2018-10-01 00:32:02,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:02,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:03,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:03,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200] total 200 [2018-10-01 00:32:03,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-10-01 00:32:03,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-10-01 00:32:03,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:03,399 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-10-01 00:32:06,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:06,035 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 00:32:06,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-10-01 00:32:06,035 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-10-01 00:32:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:06,036 INFO L225 Difference]: With dead ends: 205 [2018-10-01 00:32:06,036 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 00:32:06,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:32:06,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 00:32:06,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-01 00:32:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 00:32:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-01 00:32:06,039 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-10-01 00:32:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:06,039 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-01 00:32:06,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-10-01 00:32:06,039 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-01 00:32:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 00:32:06,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:06,039 INFO L375 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-10-01 00:32:06,040 INFO L423 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:06,040 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:06,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1956150516, now seen corresponding path program 199 times [2018-10-01 00:32:06,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:06,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:06,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:06,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:06,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:07,461 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:07,461 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:07,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:07,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:08,056 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:08,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201] total 201 [2018-10-01 00:32:08,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-10-01 00:32:08,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-10-01 00:32:08,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:08,060 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-10-01 00:32:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:09,885 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-10-01 00:32:09,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-10-01 00:32:09,885 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-10-01 00:32:09,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:09,886 INFO L225 Difference]: With dead ends: 206 [2018-10-01 00:32:09,886 INFO L226 Difference]: Without dead ends: 204 [2018-10-01 00:32:09,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:09,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-01 00:32:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-10-01 00:32:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-01 00:32:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-10-01 00:32:09,889 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-10-01 00:32:09,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:09,889 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-10-01 00:32:09,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-10-01 00:32:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-10-01 00:32:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 00:32:09,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:09,890 INFO L375 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-10-01 00:32:09,890 INFO L423 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:09,890 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:09,890 INFO L82 PathProgramCache]: Analyzing trace with hash -511122045, now seen corresponding path program 200 times [2018-10-01 00:32:09,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:09,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:09,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:09,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:09,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:11,314 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:11,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:11,320 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:32:11,470 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:32:11,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:11,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:11,872 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:11,872 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202] total 202 [2018-10-01 00:32:11,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-10-01 00:32:11,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-10-01 00:32:11,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:11,875 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-10-01 00:32:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:13,493 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-01 00:32:13,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-10-01 00:32:13,493 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-10-01 00:32:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:13,494 INFO L225 Difference]: With dead ends: 207 [2018-10-01 00:32:13,494 INFO L226 Difference]: Without dead ends: 205 [2018-10-01 00:32:13,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-01 00:32:13,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-01 00:32:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 00:32:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-01 00:32:13,496 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-10-01 00:32:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:13,497 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-01 00:32:13,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-10-01 00:32:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-01 00:32:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-01 00:32:13,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:13,497 INFO L375 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-10-01 00:32:13,498 INFO L423 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:13,498 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:13,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1335087596, now seen corresponding path program 201 times [2018-10-01 00:32:13,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:13,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:13,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:13,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:13,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:14,906 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:14,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:14,914 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:32:15,236 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2018-10-01 00:32:15,236 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:15,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:15,668 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:15,669 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 203] total 203 [2018-10-01 00:32:15,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 00:32:15,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 00:32:15,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:15,671 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-10-01 00:32:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:17,317 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-01 00:32:17,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-10-01 00:32:17,318 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-10-01 00:32:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:17,318 INFO L225 Difference]: With dead ends: 208 [2018-10-01 00:32:17,318 INFO L226 Difference]: Without dead ends: 206 [2018-10-01 00:32:17,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:17,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-01 00:32:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-01 00:32:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-01 00:32:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-10-01 00:32:17,321 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-10-01 00:32:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:17,322 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-10-01 00:32:17,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 00:32:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-10-01 00:32:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-01 00:32:17,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:17,323 INFO L375 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-10-01 00:32:17,323 INFO L423 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:17,323 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:17,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1561955677, now seen corresponding path program 202 times [2018-10-01 00:32:17,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:17,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:17,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:17,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:17,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:18,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:18,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:18,949 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:32:19,100 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:32:19,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:19,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:19,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:19,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204, 204] total 204 [2018-10-01 00:32:19,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-10-01 00:32:19,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-10-01 00:32:19,511 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:19,511 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-10-01 00:32:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:21,324 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 00:32:21,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-10-01 00:32:21,324 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-10-01 00:32:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:21,324 INFO L225 Difference]: With dead ends: 209 [2018-10-01 00:32:21,325 INFO L226 Difference]: Without dead ends: 207 [2018-10-01 00:32:21,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:32:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-01 00:32:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-01 00:32:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-01 00:32:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-01 00:32:21,327 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-10-01 00:32:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:21,328 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-01 00:32:21,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-10-01 00:32:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-01 00:32:21,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 00:32:21,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:21,328 INFO L375 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-10-01 00:32:21,328 INFO L423 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:21,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:21,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1175983924, now seen corresponding path program 203 times [2018-10-01 00:32:21,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:21,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:21,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:21,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:21,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:22,742 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:22,742 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:22,749 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:32:23,116 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-10-01 00:32:23,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:23,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:23,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:23,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 205] total 205 [2018-10-01 00:32:23,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-10-01 00:32:23,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-10-01 00:32:23,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:23,719 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-10-01 00:32:25,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:25,475 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-10-01 00:32:25,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-10-01 00:32:25,476 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-10-01 00:32:25,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:25,476 INFO L225 Difference]: With dead ends: 210 [2018-10-01 00:32:25,476 INFO L226 Difference]: Without dead ends: 208 [2018-10-01 00:32:25,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:32:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-01 00:32:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-10-01 00:32:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-01 00:32:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-10-01 00:32:25,479 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-10-01 00:32:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:25,479 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-10-01 00:32:25,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-10-01 00:32:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-10-01 00:32:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-01 00:32:25,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:25,480 INFO L375 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-10-01 00:32:25,480 INFO L423 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:25,480 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:25,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2095761469, now seen corresponding path program 204 times [2018-10-01 00:32:25,480 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:25,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:25,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:25,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:25,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:26,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:26,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:26,935 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:32:27,251 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 00:32:27,251 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:27,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:27,692 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:27,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206, 206] total 206 [2018-10-01 00:32:27,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-10-01 00:32:27,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-10-01 00:32:27,696 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:27,696 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-10-01 00:32:29,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:29,394 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-01 00:32:29,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-10-01 00:32:29,394 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-10-01 00:32:29,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:29,394 INFO L225 Difference]: With dead ends: 211 [2018-10-01 00:32:29,394 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 00:32:29,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 00:32:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-01 00:32:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 00:32:29,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-01 00:32:29,397 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-10-01 00:32:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:29,397 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-01 00:32:29,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-10-01 00:32:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-01 00:32:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 00:32:29,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:29,398 INFO L375 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-10-01 00:32:29,398 INFO L423 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:29,398 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash -544094292, now seen corresponding path program 205 times [2018-10-01 00:32:29,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:29,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:29,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:29,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:29,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:30,850 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:30,850 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:30,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:31,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:31,420 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:31,420 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207, 207] total 207 [2018-10-01 00:32:31,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 00:32:31,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 00:32:31,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:31,424 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-10-01 00:32:33,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:33,160 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-10-01 00:32:33,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-10-01 00:32:33,161 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-10-01 00:32:33,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:33,161 INFO L225 Difference]: With dead ends: 212 [2018-10-01 00:32:33,161 INFO L226 Difference]: Without dead ends: 210 [2018-10-01 00:32:33,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-01 00:32:33,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-10-01 00:32:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-01 00:32:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-01 00:32:33,165 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-10-01 00:32:33,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:33,165 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-01 00:32:33,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 00:32:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-01 00:32:33,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-01 00:32:33,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:33,166 INFO L375 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-10-01 00:32:33,166 INFO L423 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:33,167 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:33,167 INFO L82 PathProgramCache]: Analyzing trace with hash 312947939, now seen corresponding path program 206 times [2018-10-01 00:32:33,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:33,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:33,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:33,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:33,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:35,335 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:35,335 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:35,343 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:32:35,496 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:32:35,496 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:35,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:35,952 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:35,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208, 208] total 208 [2018-10-01 00:32:35,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-10-01 00:32:35,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-10-01 00:32:35,955 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:35,955 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-10-01 00:32:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:38,471 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 00:32:38,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-10-01 00:32:38,472 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-10-01 00:32:38,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:38,472 INFO L225 Difference]: With dead ends: 213 [2018-10-01 00:32:38,472 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 00:32:38,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:32:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 00:32:38,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 00:32:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 00:32:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-01 00:32:38,475 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-10-01 00:32:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:38,475 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-01 00:32:38,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-10-01 00:32:38,475 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-01 00:32:38,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-01 00:32:38,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:38,476 INFO L375 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-10-01 00:32:38,476 INFO L423 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:38,476 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:38,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1111453324, now seen corresponding path program 207 times [2018-10-01 00:32:38,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:38,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:38,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:38,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:38,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:40,240 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:40,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:40,248 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:32:40,583 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 105 check-sat command(s) [2018-10-01 00:32:40,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:40,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:41,009 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:41,010 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209, 209] total 209 [2018-10-01 00:32:41,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-10-01 00:32:41,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-10-01 00:32:41,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:41,013 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-10-01 00:32:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:44,066 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-10-01 00:32:44,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-10-01 00:32:44,066 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-10-01 00:32:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:44,066 INFO L225 Difference]: With dead ends: 214 [2018-10-01 00:32:44,066 INFO L226 Difference]: Without dead ends: 212 [2018-10-01 00:32:44,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:32:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-01 00:32:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-10-01 00:32:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-01 00:32:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-10-01 00:32:44,070 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-10-01 00:32:44,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:44,070 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-10-01 00:32:44,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-10-01 00:32:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-10-01 00:32:44,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-01 00:32:44,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:44,071 INFO L375 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-10-01 00:32:44,071 INFO L423 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:44,071 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:44,071 INFO L82 PathProgramCache]: Analyzing trace with hash 95316483, now seen corresponding path program 208 times [2018-10-01 00:32:44,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:44,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:44,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:44,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:44,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:45,630 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:45,631 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:45,637 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:32:45,793 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:32:45,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:45,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:46,216 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:46,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210, 210] total 210 [2018-10-01 00:32:46,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-10-01 00:32:46,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-10-01 00:32:46,219 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:46,219 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-10-01 00:32:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:49,554 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-01 00:32:49,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-10-01 00:32:49,555 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-10-01 00:32:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:49,555 INFO L225 Difference]: With dead ends: 215 [2018-10-01 00:32:49,555 INFO L226 Difference]: Without dead ends: 213 [2018-10-01 00:32:49,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:32:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-01 00:32:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-01 00:32:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-01 00:32:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-01 00:32:49,558 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-10-01 00:32:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:49,558 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-01 00:32:49,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-10-01 00:32:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-01 00:32:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 00:32:49,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:49,559 INFO L375 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-10-01 00:32:49,559 INFO L423 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:49,559 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:49,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1340154516, now seen corresponding path program 209 times [2018-10-01 00:32:49,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:49,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:49,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:49,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:49,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:51,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:51,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:51,034 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:32:51,435 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2018-10-01 00:32:51,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:51,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:51,862 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:51,862 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211] total 211 [2018-10-01 00:32:51,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-10-01 00:32:51,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-10-01 00:32:51,865 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:51,865 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-10-01 00:32:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:54,612 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-10-01 00:32:54,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-10-01 00:32:54,612 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-10-01 00:32:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:54,612 INFO L225 Difference]: With dead ends: 216 [2018-10-01 00:32:54,613 INFO L226 Difference]: Without dead ends: 214 [2018-10-01 00:32:54,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:32:54,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-01 00:32:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-10-01 00:32:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-01 00:32:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-10-01 00:32:54,615 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-10-01 00:32:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:54,616 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-10-01 00:32:54,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-10-01 00:32:54,616 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-10-01 00:32:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-01 00:32:54,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:54,616 INFO L375 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-10-01 00:32:54,616 INFO L423 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:54,617 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:54,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1404884771, now seen corresponding path program 210 times [2018-10-01 00:32:54,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:54,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:54,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:54,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:54,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:56,130 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:56,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:56,137 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:32:56,468 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 106 check-sat command(s) [2018-10-01 00:32:56,469 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:56,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:56,927 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:56,927 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212, 212] total 212 [2018-10-01 00:32:56,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-10-01 00:32:56,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-10-01 00:32:56,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:56,930 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-10-01 00:32:59,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:59,514 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 00:32:59,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-10-01 00:32:59,514 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-10-01 00:32:59,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:59,515 INFO L225 Difference]: With dead ends: 217 [2018-10-01 00:32:59,515 INFO L226 Difference]: Without dead ends: 215 [2018-10-01 00:32:59,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:32:59,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-01 00:32:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-01 00:32:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 00:32:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-01 00:32:59,518 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-10-01 00:32:59,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:59,518 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-01 00:32:59,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-10-01 00:32:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-01 00:32:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-01 00:32:59,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:59,519 INFO L375 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-10-01 00:32:59,519 INFO L423 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:59,519 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:59,519 INFO L82 PathProgramCache]: Analyzing trace with hash 601756748, now seen corresponding path program 211 times [2018-10-01 00:32:59,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:59,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:59,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:59,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:59,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:01,082 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:01,082 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:01,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:01,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:01,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:01,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 213] total 213 [2018-10-01 00:33:01,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-10-01 00:33:01,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-10-01 00:33:01,729 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:01,729 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-10-01 00:33:05,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:05,533 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-10-01 00:33:05,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-10-01 00:33:05,533 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-10-01 00:33:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:05,534 INFO L225 Difference]: With dead ends: 218 [2018-10-01 00:33:05,534 INFO L226 Difference]: Without dead ends: 216 [2018-10-01 00:33:05,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:33:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-01 00:33:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-10-01 00:33:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-01 00:33:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-10-01 00:33:05,537 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-10-01 00:33:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:05,537 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-10-01 00:33:05,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-10-01 00:33:05,537 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-10-01 00:33:05,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-01 00:33:05,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:05,538 INFO L375 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-10-01 00:33:05,538 INFO L423 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:05,538 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:05,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1474591811, now seen corresponding path program 212 times [2018-10-01 00:33:05,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:05,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:05,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:05,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:05,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:07,461 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:07,461 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:07,468 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:33:07,623 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:33:07,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:07,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:08,086 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:08,086 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214] total 214 [2018-10-01 00:33:08,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-10-01 00:33:08,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-10-01 00:33:08,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:08,089 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-10-01 00:33:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:10,363 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-01 00:33:10,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-10-01 00:33:10,363 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-10-01 00:33:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:10,364 INFO L225 Difference]: With dead ends: 219 [2018-10-01 00:33:10,364 INFO L226 Difference]: Without dead ends: 217 [2018-10-01 00:33:10,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:33:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-01 00:33:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-01 00:33:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-01 00:33:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-01 00:33:10,367 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-10-01 00:33:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:10,367 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-01 00:33:10,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-10-01 00:33:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-01 00:33:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-01 00:33:10,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:10,368 INFO L375 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-10-01 00:33:10,368 INFO L423 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:10,368 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:10,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1532292308, now seen corresponding path program 213 times [2018-10-01 00:33:10,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:10,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:10,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:10,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:10,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:11,967 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:11,967 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:11,975 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:33:12,330 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 108 check-sat command(s) [2018-10-01 00:33:12,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:12,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:12,762 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:12,763 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215, 215] total 215 [2018-10-01 00:33:12,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-10-01 00:33:12,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-10-01 00:33:12,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:12,767 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-10-01 00:33:15,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:15,210 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-10-01 00:33:15,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-10-01 00:33:15,210 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-10-01 00:33:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:15,211 INFO L225 Difference]: With dead ends: 220 [2018-10-01 00:33:15,211 INFO L226 Difference]: Without dead ends: 218 [2018-10-01 00:33:15,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:33:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-01 00:33:15,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-10-01 00:33:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-10-01 00:33:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-10-01 00:33:15,214 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-10-01 00:33:15,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:15,214 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-10-01 00:33:15,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-10-01 00:33:15,214 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-10-01 00:33:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-01 00:33:15,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:15,215 INFO L375 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-10-01 00:33:15,215 INFO L423 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:15,215 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:15,215 INFO L82 PathProgramCache]: Analyzing trace with hash -256419485, now seen corresponding path program 214 times [2018-10-01 00:33:15,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:15,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:15,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:15,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:15,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:16,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:16,782 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:16,789 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:33:16,947 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:33:16,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:16,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:17,374 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:17,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216, 216] total 216 [2018-10-01 00:33:17,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-10-01 00:33:17,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-10-01 00:33:17,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:17,377 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-10-01 00:33:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:21,104 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 00:33:21,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-10-01 00:33:21,104 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-10-01 00:33:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:21,105 INFO L225 Difference]: With dead ends: 221 [2018-10-01 00:33:21,105 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 00:33:21,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:33:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 00:33:21,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-01 00:33:21,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 00:33:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-01 00:33:21,108 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-10-01 00:33:21,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:21,109 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-01 00:33:21,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-10-01 00:33:21,109 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-01 00:33:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 00:33:21,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:21,110 INFO L375 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-10-01 00:33:21,110 INFO L423 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:21,110 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:21,110 INFO L82 PathProgramCache]: Analyzing trace with hash 640932364, now seen corresponding path program 215 times [2018-10-01 00:33:21,110 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:21,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:21,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:21,111 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:21,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:22,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:22,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:22,703 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:33:23,096 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-10-01 00:33:23,096 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:23,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:23,577 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:23,577 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217, 217] total 217 [2018-10-01 00:33:23,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-10-01 00:33:23,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-10-01 00:33:23,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:23,580 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-10-01 00:33:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:26,217 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-01 00:33:26,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-10-01 00:33:26,218 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-10-01 00:33:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:26,218 INFO L225 Difference]: With dead ends: 222 [2018-10-01 00:33:26,218 INFO L226 Difference]: Without dead ends: 220 [2018-10-01 00:33:26,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:33:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-01 00:33:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-10-01 00:33:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-01 00:33:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-10-01 00:33:26,221 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-10-01 00:33:26,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:26,221 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-10-01 00:33:26,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-10-01 00:33:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-10-01 00:33:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-01 00:33:26,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:26,222 INFO L375 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-10-01 00:33:26,222 INFO L423 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:26,222 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:26,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1605931389, now seen corresponding path program 216 times [2018-10-01 00:33:26,223 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:26,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:26,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:26,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:26,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:27,839 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:27,839 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:27,846 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:33:28,201 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 00:33:28,201 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:28,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:28,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:28,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218, 218] total 218 [2018-10-01 00:33:28,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-10-01 00:33:28,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-10-01 00:33:28,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:28,644 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-10-01 00:33:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:31,689 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-01 00:33:31,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-10-01 00:33:31,689 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-10-01 00:33:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:31,689 INFO L225 Difference]: With dead ends: 223 [2018-10-01 00:33:31,690 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 00:33:31,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:33:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 00:33:31,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 00:33:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 00:33:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-01 00:33:31,692 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-10-01 00:33:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:31,693 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-01 00:33:31,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-10-01 00:33:31,693 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-01 00:33:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-01 00:33:31,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:31,693 INFO L375 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-10-01 00:33:31,694 INFO L423 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:31,694 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1755736300, now seen corresponding path program 217 times [2018-10-01 00:33:31,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:31,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:31,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:31,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:31,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:33,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:33,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:33,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:33,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:33,944 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:33,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219, 219] total 219 [2018-10-01 00:33:33,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-10-01 00:33:33,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-10-01 00:33:33,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:33,948 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-10-01 00:33:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:36,792 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-01 00:33:36,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-10-01 00:33:36,792 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-10-01 00:33:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:36,793 INFO L225 Difference]: With dead ends: 224 [2018-10-01 00:33:36,793 INFO L226 Difference]: Without dead ends: 222 [2018-10-01 00:33:36,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:33:36,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-01 00:33:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-10-01 00:33:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-10-01 00:33:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-10-01 00:33:36,797 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-10-01 00:33:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:36,797 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-10-01 00:33:36,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-10-01 00:33:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-10-01 00:33:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-01 00:33:36,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:36,798 INFO L375 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-10-01 00:33:36,799 INFO L423 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:36,799 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:36,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1406747741, now seen corresponding path program 218 times [2018-10-01 00:33:36,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:36,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:36,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:36,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:36,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:38,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:38,637 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:38,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:33:38,807 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:33:38,807 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:38,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:39,249 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:39,249 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220, 220] total 220 [2018-10-01 00:33:39,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-10-01 00:33:39,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-10-01 00:33:39,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:39,253 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-10-01 00:33:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:42,276 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 00:33:42,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-10-01 00:33:42,276 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-10-01 00:33:42,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:42,277 INFO L225 Difference]: With dead ends: 225 [2018-10-01 00:33:42,277 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 00:33:42,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:33:42,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 00:33:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-01 00:33:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 00:33:42,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-01 00:33:42,280 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-10-01 00:33:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:42,280 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-01 00:33:42,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-10-01 00:33:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-01 00:33:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 00:33:42,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:42,281 INFO L375 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-10-01 00:33:42,281 INFO L423 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:42,281 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:42,281 INFO L82 PathProgramCache]: Analyzing trace with hash -659505204, now seen corresponding path program 219 times [2018-10-01 00:33:42,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:42,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:42,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:42,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:42,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:43,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:43,912 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:43,943 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:33:44,313 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 111 check-sat command(s) [2018-10-01 00:33:44,313 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:44,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:44,756 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:44,757 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221, 221] total 221 [2018-10-01 00:33:44,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-10-01 00:33:44,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-10-01 00:33:44,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:44,760 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-10-01 00:33:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:49,065 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-10-01 00:33:49,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-10-01 00:33:49,066 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-10-01 00:33:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:49,066 INFO L225 Difference]: With dead ends: 226 [2018-10-01 00:33:49,066 INFO L226 Difference]: Without dead ends: 224 [2018-10-01 00:33:49,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:33:49,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-01 00:33:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-10-01 00:33:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-01 00:33:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-01 00:33:49,069 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-10-01 00:33:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:49,069 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-01 00:33:49,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-10-01 00:33:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-01 00:33:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-01 00:33:49,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:49,070 INFO L375 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-10-01 00:33:49,070 INFO L423 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:49,070 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:49,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1030176963, now seen corresponding path program 220 times [2018-10-01 00:33:49,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:49,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:49,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:49,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:49,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:50,823 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:50,823 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:50,830 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:33:50,991 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:33:50,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:50,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:51,468 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:51,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222, 222] total 222 [2018-10-01 00:33:51,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-10-01 00:33:51,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-10-01 00:33:51,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:51,472 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-10-01 00:33:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:53,807 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-01 00:33:53,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-10-01 00:33:53,807 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-10-01 00:33:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:53,808 INFO L225 Difference]: With dead ends: 227 [2018-10-01 00:33:53,808 INFO L226 Difference]: Without dead ends: 225 [2018-10-01 00:33:53,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:33:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-01 00:33:53,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-01 00:33:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-01 00:33:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-01 00:33:53,811 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-10-01 00:33:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:53,811 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-01 00:33:53,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-10-01 00:33:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-01 00:33:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 00:33:53,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:53,812 INFO L375 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-10-01 00:33:53,812 INFO L423 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:53,812 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:53,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1870716588, now seen corresponding path program 221 times [2018-10-01 00:33:53,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:53,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:53,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:53,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:53,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:55,455 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:55,455 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:55,463 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:33:55,887 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 112 check-sat command(s) [2018-10-01 00:33:55,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:55,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:56,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:56,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223, 223] total 223 [2018-10-01 00:33:56,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-10-01 00:33:56,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-10-01 00:33:56,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:56,346 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-10-01 00:33:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:59,334 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-10-01 00:33:59,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-10-01 00:33:59,334 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-10-01 00:33:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:59,335 INFO L225 Difference]: With dead ends: 228 [2018-10-01 00:33:59,335 INFO L226 Difference]: Without dead ends: 226 [2018-10-01 00:33:59,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:33:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-01 00:33:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-01 00:33:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-01 00:33:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-01 00:33:59,338 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-10-01 00:33:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:59,338 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-01 00:33:59,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-10-01 00:33:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-01 00:33:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-01 00:33:59,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:59,339 INFO L375 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-10-01 00:33:59,339 INFO L423 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:59,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:59,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2137326109, now seen corresponding path program 222 times [2018-10-01 00:33:59,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:59,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:59,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:59,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:59,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:01,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:01,165 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:01,171 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:34:01,536 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 112 check-sat command(s) [2018-10-01 00:34:01,536 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:01,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:01,988 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:01,988 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224] total 224 [2018-10-01 00:34:01,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-10-01 00:34:01,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-10-01 00:34:01,992 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:01,992 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-10-01 00:34:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:05,619 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 00:34:05,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-10-01 00:34:05,620 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-10-01 00:34:05,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:05,620 INFO L225 Difference]: With dead ends: 229 [2018-10-01 00:34:05,620 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 00:34:05,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:34:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 00:34:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-01 00:34:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 00:34:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-01 00:34:05,623 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-10-01 00:34:05,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:05,623 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-01 00:34:05,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-10-01 00:34:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-01 00:34:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-01 00:34:05,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:05,624 INFO L375 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-10-01 00:34:05,624 INFO L423 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:05,624 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:05,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1832598132, now seen corresponding path program 223 times [2018-10-01 00:34:05,625 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:05,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:05,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:05,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:05,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:07,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:07,584 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:07,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:07,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:08,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:08,199 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225, 225] total 225 [2018-10-01 00:34:08,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-10-01 00:34:08,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-10-01 00:34:08,202 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:08,202 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-10-01 00:34:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:12,060 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-10-01 00:34:12,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-10-01 00:34:12,060 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-10-01 00:34:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:12,061 INFO L225 Difference]: With dead ends: 230 [2018-10-01 00:34:12,061 INFO L226 Difference]: Without dead ends: 228 [2018-10-01 00:34:12,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:34:12,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-01 00:34:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-10-01 00:34:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-10-01 00:34:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-10-01 00:34:12,064 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-10-01 00:34:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:12,064 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-10-01 00:34:12,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-10-01 00:34:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-10-01 00:34:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 00:34:12,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:12,065 INFO L375 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-10-01 00:34:12,065 INFO L423 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:12,065 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:12,065 INFO L82 PathProgramCache]: Analyzing trace with hash -975965437, now seen corresponding path program 224 times [2018-10-01 00:34:12,065 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:12,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:12,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:12,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:12,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:13,790 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:13,790 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:13,797 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:34:13,980 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:34:13,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:13,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:14,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:14,682 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226, 226] total 226 [2018-10-01 00:34:14,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-10-01 00:34:14,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-10-01 00:34:14,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:14,686 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-10-01 00:34:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:17,864 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-01 00:34:17,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-10-01 00:34:17,865 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-10-01 00:34:17,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:17,865 INFO L225 Difference]: With dead ends: 231 [2018-10-01 00:34:17,865 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 00:34:17,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:34:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 00:34:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-01 00:34:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 00:34:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-01 00:34:17,868 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-10-01 00:34:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:17,868 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-01 00:34:17,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-10-01 00:34:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-01 00:34:17,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 00:34:17,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:17,869 INFO L375 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-10-01 00:34:17,869 INFO L423 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:17,869 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:17,869 INFO L82 PathProgramCache]: Analyzing trace with hash -190155668, now seen corresponding path program 225 times [2018-10-01 00:34:17,869 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:17,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:17,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:17,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:17,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:19,594 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:19,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:19,601 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:34:19,995 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 114 check-sat command(s) [2018-10-01 00:34:19,996 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:20,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:20,455 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:20,455 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227, 227] total 227 [2018-10-01 00:34:20,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-10-01 00:34:20,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-10-01 00:34:20,458 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:20,458 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-10-01 00:34:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:22,786 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-10-01 00:34:22,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-10-01 00:34:22,787 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-10-01 00:34:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:22,787 INFO L225 Difference]: With dead ends: 232 [2018-10-01 00:34:22,787 INFO L226 Difference]: Without dead ends: 230 [2018-10-01 00:34:22,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:34:22,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-01 00:34:22,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-10-01 00:34:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-01 00:34:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-10-01 00:34:22,790 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-10-01 00:34:22,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:22,790 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-10-01 00:34:22,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-10-01 00:34:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-10-01 00:34:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-01 00:34:22,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:22,791 INFO L375 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-10-01 00:34:22,791 INFO L423 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:22,791 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:22,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1599856605, now seen corresponding path program 226 times [2018-10-01 00:34:22,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:22,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:22,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:22,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:22,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:24,515 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:24,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:24,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:24,529 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:34:24,694 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:34:24,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:24,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:25,155 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:25,156 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228, 228] total 228 [2018-10-01 00:34:25,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-10-01 00:34:25,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-10-01 00:34:25,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:25,159 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-10-01 00:34:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:27,919 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 00:34:27,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-10-01 00:34:27,920 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-10-01 00:34:27,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:27,920 INFO L225 Difference]: With dead ends: 233 [2018-10-01 00:34:27,921 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 00:34:27,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:34:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 00:34:27,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-01 00:34:27,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 00:34:27,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-01 00:34:27,925 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-10-01 00:34:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:27,925 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-01 00:34:27,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-10-01 00:34:27,925 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-01 00:34:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 00:34:27,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:27,926 INFO L375 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-10-01 00:34:27,926 INFO L423 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:27,926 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:27,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1944054604, now seen corresponding path program 227 times [2018-10-01 00:34:27,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:27,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:27,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:27,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:27,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:29,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:29,670 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:29,680 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:34:30,112 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-10-01 00:34:30,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:30,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:30,612 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:30,613 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229, 229] total 229 [2018-10-01 00:34:30,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-10-01 00:34:30,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-10-01 00:34:30,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:30,617 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-10-01 00:34:32,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:32,837 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-01 00:34:32,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-10-01 00:34:32,837 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-10-01 00:34:32,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:32,838 INFO L225 Difference]: With dead ends: 234 [2018-10-01 00:34:32,838 INFO L226 Difference]: Without dead ends: 232 [2018-10-01 00:34:32,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:34:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-01 00:34:32,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-10-01 00:34:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-01 00:34:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-10-01 00:34:32,841 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-10-01 00:34:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:32,842 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-10-01 00:34:32,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-10-01 00:34:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-10-01 00:34:32,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-01 00:34:32,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:32,842 INFO L375 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-10-01 00:34:32,842 INFO L423 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:32,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:32,843 INFO L82 PathProgramCache]: Analyzing trace with hash 136152387, now seen corresponding path program 228 times [2018-10-01 00:34:32,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:32,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:32,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:32,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:32,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:34,619 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:34,619 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:34,626 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:34:35,011 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 00:34:35,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:35,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:35,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:35,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230, 230] total 230 [2018-10-01 00:34:35,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-10-01 00:34:35,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-10-01 00:34:35,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:35,503 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-10-01 00:34:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:39,042 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-01 00:34:39,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-10-01 00:34:39,043 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-10-01 00:34:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:39,043 INFO L225 Difference]: With dead ends: 235 [2018-10-01 00:34:39,043 INFO L226 Difference]: Without dead ends: 233 [2018-10-01 00:34:39,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:34:39,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-01 00:34:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-01 00:34:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-01 00:34:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-10-01 00:34:39,046 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-10-01 00:34:39,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:39,046 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-10-01 00:34:39,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-10-01 00:34:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-10-01 00:34:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-01 00:34:39,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:39,047 INFO L375 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-10-01 00:34:39,047 INFO L423 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:39,047 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:39,048 INFO L82 PathProgramCache]: Analyzing trace with hash -74241492, now seen corresponding path program 229 times [2018-10-01 00:34:39,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:39,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:39,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:39,048 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:39,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:40,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:40,802 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:40,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:40,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:41,491 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:41,491 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231, 231] total 231 [2018-10-01 00:34:41,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-10-01 00:34:41,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-10-01 00:34:41,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:41,495 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-10-01 00:34:43,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:43,916 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-10-01 00:34:43,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-10-01 00:34:43,916 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-10-01 00:34:43,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:43,916 INFO L225 Difference]: With dead ends: 236 [2018-10-01 00:34:43,917 INFO L226 Difference]: Without dead ends: 234 [2018-10-01 00:34:43,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:34:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-01 00:34:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-10-01 00:34:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-01 00:34:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-10-01 00:34:43,920 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-10-01 00:34:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:43,920 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-10-01 00:34:43,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-10-01 00:34:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-10-01 00:34:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 00:34:43,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:43,921 INFO L375 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-10-01 00:34:43,921 INFO L423 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:43,921 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:43,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1993482851, now seen corresponding path program 230 times [2018-10-01 00:34:43,921 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:43,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:43,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:43,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:43,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:45,748 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:45,748 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:45,755 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:34:45,926 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:34:45,926 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:45,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:46,401 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:46,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232, 232] total 232 [2018-10-01 00:34:46,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-10-01 00:34:46,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-10-01 00:34:46,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:46,406 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-10-01 00:34:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:50,013 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 00:34:50,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-10-01 00:34:50,013 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-10-01 00:34:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:50,014 INFO L225 Difference]: With dead ends: 237 [2018-10-01 00:34:50,014 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 00:34:50,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:34:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 00:34:50,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-01 00:34:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 00:34:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-01 00:34:50,016 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-10-01 00:34:50,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:50,017 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-01 00:34:50,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-10-01 00:34:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-01 00:34:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-01 00:34:50,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:50,018 INFO L375 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-10-01 00:34:50,018 INFO L423 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:50,018 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1668428044, now seen corresponding path program 231 times [2018-10-01 00:34:50,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:50,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:50,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:50,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:50,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:51,824 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:51,824 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:51,830 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:34:52,259 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 117 check-sat command(s) [2018-10-01 00:34:52,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:52,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:52,732 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:52,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233, 233] total 233 [2018-10-01 00:34:52,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-10-01 00:34:52,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-10-01 00:34:52,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:52,737 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-10-01 00:34:55,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:55,475 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-10-01 00:34:55,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-10-01 00:34:55,475 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-10-01 00:34:55,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:55,476 INFO L225 Difference]: With dead ends: 238 [2018-10-01 00:34:55,476 INFO L226 Difference]: Without dead ends: 236 [2018-10-01 00:34:55,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:34:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-01 00:34:55,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-01 00:34:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-01 00:34:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-01 00:34:55,480 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-10-01 00:34:55,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:55,480 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-01 00:34:55,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-10-01 00:34:55,480 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-01 00:34:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-01 00:34:55,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:55,481 INFO L375 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-10-01 00:34:55,481 INFO L423 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:55,481 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:55,481 INFO L82 PathProgramCache]: Analyzing trace with hash 181663619, now seen corresponding path program 232 times [2018-10-01 00:34:55,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:55,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:55,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:55,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:55,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:57,481 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:57,481 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:57,488 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:34:57,660 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:34:57,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:57,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:58,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:58,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234, 234] total 234 [2018-10-01 00:34:58,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-10-01 00:34:58,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-10-01 00:34:58,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:58,143 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-10-01 00:35:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:02,553 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-01 00:35:02,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-10-01 00:35:02,553 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-10-01 00:35:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:02,554 INFO L225 Difference]: With dead ends: 239 [2018-10-01 00:35:02,554 INFO L226 Difference]: Without dead ends: 237 [2018-10-01 00:35:02,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:35:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-01 00:35:02,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-01 00:35:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-01 00:35:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-10-01 00:35:02,557 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-10-01 00:35:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:02,557 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-10-01 00:35:02,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-10-01 00:35:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-10-01 00:35:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 00:35:02,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:02,558 INFO L375 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-10-01 00:35:02,558 INFO L423 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:02,558 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:02,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1336606700, now seen corresponding path program 233 times [2018-10-01 00:35:02,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:02,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:02,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:02,559 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:02,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:04,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:04,353 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:04,391 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:04,843 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 118 check-sat command(s) [2018-10-01 00:35:04,843 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:04,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:05,319 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:05,320 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235, 235] total 235 [2018-10-01 00:35:05,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-10-01 00:35:05,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-10-01 00:35:05,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:05,324 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-10-01 00:35:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:10,474 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-10-01 00:35:10,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-10-01 00:35:10,475 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-10-01 00:35:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:10,475 INFO L225 Difference]: With dead ends: 240 [2018-10-01 00:35:10,475 INFO L226 Difference]: Without dead ends: 238 [2018-10-01 00:35:10,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:35:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-01 00:35:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-10-01 00:35:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-01 00:35:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-10-01 00:35:10,478 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-10-01 00:35:10,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:10,478 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-10-01 00:35:10,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-10-01 00:35:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-10-01 00:35:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-01 00:35:10,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:10,479 INFO L375 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-10-01 00:35:10,479 INFO L423 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:10,479 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:10,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1514863453, now seen corresponding path program 234 times [2018-10-01 00:35:10,480 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:10,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:10,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:10,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:10,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:12,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:12,313 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:12,321 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:12,733 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 118 check-sat command(s) [2018-10-01 00:35:12,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:12,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:13,248 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:13,248 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236, 236] total 236 [2018-10-01 00:35:13,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-10-01 00:35:13,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-10-01 00:35:13,252 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:13,252 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-10-01 00:35:16,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:16,693 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 00:35:16,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-10-01 00:35:16,693 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-10-01 00:35:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:16,694 INFO L225 Difference]: With dead ends: 241 [2018-10-01 00:35:16,694 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 00:35:16,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:35:16,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 00:35:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-01 00:35:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 00:35:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-01 00:35:16,698 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-10-01 00:35:16,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:16,698 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-01 00:35:16,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-10-01 00:35:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-01 00:35:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 00:35:16,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:16,699 INFO L375 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-10-01 00:35:16,699 INFO L423 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:16,699 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:16,699 INFO L82 PathProgramCache]: Analyzing trace with hash 283875020, now seen corresponding path program 235 times [2018-10-01 00:35:16,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:16,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:16,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:16,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:16,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:18,779 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:18,779 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:18,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:18,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:19,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:19,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237, 237] total 237 [2018-10-01 00:35:19,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-10-01 00:35:19,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-10-01 00:35:19,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:19,454 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-10-01 00:35:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:23,172 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-10-01 00:35:23,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-10-01 00:35:23,172 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-10-01 00:35:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:23,173 INFO L225 Difference]: With dead ends: 242 [2018-10-01 00:35:23,173 INFO L226 Difference]: Without dead ends: 240 [2018-10-01 00:35:23,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:35:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-01 00:35:23,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-10-01 00:35:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-01 00:35:23,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-10-01 00:35:23,176 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-10-01 00:35:23,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:23,176 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-10-01 00:35:23,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-10-01 00:35:23,176 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-10-01 00:35:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-01 00:35:23,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:23,177 INFO L375 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-10-01 00:35:23,177 INFO L423 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:23,177 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:23,177 INFO L82 PathProgramCache]: Analyzing trace with hash 210192835, now seen corresponding path program 236 times [2018-10-01 00:35:23,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:23,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:23,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:23,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:23,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:25,146 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:25,146 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:25,154 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:35:25,341 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:35:25,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:25,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:25,854 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:25,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238, 238] total 238 [2018-10-01 00:35:25,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-10-01 00:35:25,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-10-01 00:35:25,859 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:25,859 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-10-01 00:35:29,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:29,963 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-01 00:35:29,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-10-01 00:35:29,963 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-10-01 00:35:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:29,963 INFO L225 Difference]: With dead ends: 243 [2018-10-01 00:35:29,963 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 00:35:29,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:35:29,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 00:35:29,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 00:35:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 00:35:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-01 00:35:29,966 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-10-01 00:35:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:29,966 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-01 00:35:29,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-10-01 00:35:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-01 00:35:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-01 00:35:29,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:29,967 INFO L375 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-10-01 00:35:29,967 INFO L423 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:29,967 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:29,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2073954900, now seen corresponding path program 237 times [2018-10-01 00:35:29,967 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:29,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:29,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:29,968 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:29,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:31,963 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:31,963 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:31,969 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:35:32,404 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 120 check-sat command(s) [2018-10-01 00:35:32,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:32,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:32,998 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:32,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239, 239] total 239 [2018-10-01 00:35:32,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-10-01 00:35:33,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-10-01 00:35:33,002 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:33,002 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-10-01 00:35:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:37,368 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-10-01 00:35:37,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-10-01 00:35:37,368 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-10-01 00:35:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:37,368 INFO L225 Difference]: With dead ends: 244 [2018-10-01 00:35:37,369 INFO L226 Difference]: Without dead ends: 242 [2018-10-01 00:35:37,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:35:37,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-01 00:35:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-10-01 00:35:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-01 00:35:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-10-01 00:35:37,371 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-10-01 00:35:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:37,372 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-10-01 00:35:37,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-10-01 00:35:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-10-01 00:35:37,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-01 00:35:37,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:37,373 INFO L375 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-10-01 00:35:37,373 INFO L423 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:37,373 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:37,373 INFO L82 PathProgramCache]: Analyzing trace with hash 131909347, now seen corresponding path program 238 times [2018-10-01 00:35:37,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:37,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:37,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:37,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:37,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:39,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:39,608 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:39,615 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:35:39,795 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:35:39,795 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:39,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:40,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:40,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240, 240] total 240 [2018-10-01 00:35:40,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-10-01 00:35:40,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-10-01 00:35:40,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:40,288 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-10-01 00:35:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:44,002 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 00:35:44,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-10-01 00:35:44,002 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-10-01 00:35:44,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:44,002 INFO L225 Difference]: With dead ends: 245 [2018-10-01 00:35:44,002 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 00:35:44,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:35:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 00:35:44,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-01 00:35:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-01 00:35:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-01 00:35:44,005 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-10-01 00:35:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:44,005 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-01 00:35:44,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-10-01 00:35:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-01 00:35:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 00:35:44,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:44,006 INFO L375 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-10-01 00:35:44,006 INFO L423 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:44,006 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:44,006 INFO L82 PathProgramCache]: Analyzing trace with hash -205775732, now seen corresponding path program 239 times [2018-10-01 00:35:44,007 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:44,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:44,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:44,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:44,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:45,963 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:45,963 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:45,970 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:46,445 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2018-10-01 00:35:46,446 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:46,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:46,942 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:46,942 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241, 241] total 241 [2018-10-01 00:35:46,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-10-01 00:35:46,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-10-01 00:35:46,946 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:46,946 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-10-01 00:35:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:51,921 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-01 00:35:51,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-10-01 00:35:51,921 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-10-01 00:35:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:51,921 INFO L225 Difference]: With dead ends: 246 [2018-10-01 00:35:51,921 INFO L226 Difference]: Without dead ends: 244 [2018-10-01 00:35:51,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:35:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-01 00:35:51,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-10-01 00:35:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-01 00:35:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-10-01 00:35:51,924 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-10-01 00:35:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:51,925 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-10-01 00:35:51,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-10-01 00:35:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-10-01 00:35:51,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-01 00:35:51,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:51,925 INFO L375 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-10-01 00:35:51,925 INFO L423 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:51,926 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:51,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2084078589, now seen corresponding path program 240 times [2018-10-01 00:35:51,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:51,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:51,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:51,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:51,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:54,015 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:54,015 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:54,066 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:54,494 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 00:35:54,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:54,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:54,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:54,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242, 242] total 242 [2018-10-01 00:35:54,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-10-01 00:35:54,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-10-01 00:35:54,987 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:54,987 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-10-01 00:35:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:57,817 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-01 00:35:57,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-10-01 00:35:57,817 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-10-01 00:35:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:57,818 INFO L225 Difference]: With dead ends: 247 [2018-10-01 00:35:57,818 INFO L226 Difference]: Without dead ends: 245 [2018-10-01 00:35:57,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:35:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-01 00:35:57,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-01 00:35:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 00:35:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-10-01 00:35:57,821 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-10-01 00:35:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:57,821 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-10-01 00:35:57,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-10-01 00:35:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-10-01 00:35:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-01 00:35:57,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:57,822 INFO L375 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-10-01 00:35:57,822 INFO L423 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:57,822 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:57,822 INFO L82 PathProgramCache]: Analyzing trace with hash -181925012, now seen corresponding path program 241 times [2018-10-01 00:35:57,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:57,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:57,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:57,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:57,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:59,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:59,969 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:59,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:00,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:00,730 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:00,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243, 243] total 243 [2018-10-01 00:36:00,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-10-01 00:36:00,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-10-01 00:36:00,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:00,735 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-10-01 00:36:06,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:06,159 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-10-01 00:36:06,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-10-01 00:36:06,159 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-10-01 00:36:06,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:06,160 INFO L225 Difference]: With dead ends: 248 [2018-10-01 00:36:06,160 INFO L226 Difference]: Without dead ends: 246 [2018-10-01 00:36:06,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:36:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-01 00:36:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-10-01 00:36:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-01 00:36:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-10-01 00:36:06,163 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-10-01 00:36:06,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:06,163 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-10-01 00:36:06,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-10-01 00:36:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-10-01 00:36:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-01 00:36:06,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:06,164 INFO L375 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-10-01 00:36:06,164 INFO L423 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:06,165 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:06,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1344706269, now seen corresponding path program 242 times [2018-10-01 00:36:06,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:06,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:06,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:06,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:06,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:08,185 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:08,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:08,193 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:36:08,374 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:36:08,374 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:08,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:09,160 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:09,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244, 244] total 244 [2018-10-01 00:36:09,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-10-01 00:36:09,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-10-01 00:36:09,167 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:09,167 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-10-01 00:36:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:14,245 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 00:36:14,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-10-01 00:36:14,246 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-10-01 00:36:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:14,246 INFO L225 Difference]: With dead ends: 249 [2018-10-01 00:36:14,246 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 00:36:14,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:36:14,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 00:36:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-01 00:36:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 00:36:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-01 00:36:14,249 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-10-01 00:36:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:14,250 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-01 00:36:14,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-10-01 00:36:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-01 00:36:14,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-01 00:36:14,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:14,251 INFO L375 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-10-01 00:36:14,251 INFO L423 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:14,251 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:14,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1263780428, now seen corresponding path program 243 times [2018-10-01 00:36:14,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:14,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:14,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:14,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:14,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:16,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:16,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:16,301 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:36:16,761 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 123 check-sat command(s) [2018-10-01 00:36:16,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:16,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:17,262 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:17,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245, 245] total 245 [2018-10-01 00:36:17,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-10-01 00:36:17,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-10-01 00:36:17,267 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:17,267 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-10-01 00:36:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:22,024 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-10-01 00:36:22,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-10-01 00:36:22,024 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-10-01 00:36:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:22,025 INFO L225 Difference]: With dead ends: 250 [2018-10-01 00:36:22,025 INFO L226 Difference]: Without dead ends: 248 [2018-10-01 00:36:22,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:36:22,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-01 00:36:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-10-01 00:36:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-01 00:36:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-01 00:36:22,028 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-10-01 00:36:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:22,028 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-01 00:36:22,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-10-01 00:36:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-01 00:36:22,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-01 00:36:22,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:22,029 INFO L375 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-10-01 00:36:22,029 INFO L423 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:22,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash 522489411, now seen corresponding path program 244 times [2018-10-01 00:36:22,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:22,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:22,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:22,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:22,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:24,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:24,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:24,065 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:36:24,254 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:36:24,255 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:24,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:24,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:24,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246, 246] total 246 [2018-10-01 00:36:24,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-10-01 00:36:24,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-10-01 00:36:24,806 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:24,806 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-10-01 00:36:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:27,896 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-01 00:36:27,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-10-01 00:36:27,896 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-10-01 00:36:27,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:27,897 INFO L225 Difference]: With dead ends: 251 [2018-10-01 00:36:27,897 INFO L226 Difference]: Without dead ends: 249 [2018-10-01 00:36:27,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:36:27,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-01 00:36:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-10-01 00:36:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-01 00:36:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-01 00:36:27,900 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-10-01 00:36:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:27,900 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-01 00:36:27,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-10-01 00:36:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-01 00:36:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 00:36:27,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:27,901 INFO L375 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-10-01 00:36:27,901 INFO L423 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:27,901 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:27,901 INFO L82 PathProgramCache]: Analyzing trace with hash -982695636, now seen corresponding path program 245 times [2018-10-01 00:36:27,901 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:27,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:27,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:27,902 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:27,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:30,053 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:30,053 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:30,063 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:36:30,562 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 124 check-sat command(s) [2018-10-01 00:36:30,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:30,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:31,124 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:31,124 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247, 247] total 247 [2018-10-01 00:36:31,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-10-01 00:36:31,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-10-01 00:36:31,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:31,128 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-10-01 00:36:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:34,654 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-10-01 00:36:34,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-10-01 00:36:34,654 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-10-01 00:36:34,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:34,655 INFO L225 Difference]: With dead ends: 252 [2018-10-01 00:36:34,655 INFO L226 Difference]: Without dead ends: 250 [2018-10-01 00:36:34,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:36:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-10-01 00:36:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-10-01 00:36:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-01 00:36:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-10-01 00:36:34,658 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-10-01 00:36:34,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:34,658 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-10-01 00:36:34,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-10-01 00:36:34,658 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-10-01 00:36:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-01 00:36:34,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:34,659 INFO L375 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-10-01 00:36:34,659 INFO L423 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:34,659 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash -398791837, now seen corresponding path program 246 times [2018-10-01 00:36:34,659 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:34,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:34,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:34,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:34,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:36,735 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:36,735 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:36,742 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:36:37,191 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 124 check-sat command(s) [2018-10-01 00:36:37,191 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:37,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:37,695 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:37,695 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248, 248] total 248 [2018-10-01 00:36:37,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-10-01 00:36:37,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-10-01 00:36:37,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:37,700 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. [2018-10-01 00:36:43,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:43,176 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 00:36:43,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-10-01 00:36:43,176 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 249 [2018-10-01 00:36:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:43,176 INFO L225 Difference]: With dead ends: 253 [2018-10-01 00:36:43,176 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 00:36:43,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:36:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 00:36:43,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-01 00:36:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 00:36:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-01 00:36:43,179 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-10-01 00:36:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:43,180 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-01 00:36:43,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-10-01 00:36:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-01 00:36:43,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-01 00:36:43,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:43,181 INFO L375 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-10-01 00:36:43,181 INFO L423 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:43,181 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:43,181 INFO L82 PathProgramCache]: Analyzing trace with hash 522356748, now seen corresponding path program 247 times [2018-10-01 00:36:43,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:43,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:43,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:43,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:43,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:45,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:45,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:45,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:45,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:46,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:46,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249, 249] total 249 [2018-10-01 00:36:46,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-10-01 00:36:46,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-10-01 00:36:46,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:46,096 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 250 states. [2018-10-01 00:36:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:50,868 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-10-01 00:36:50,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-10-01 00:36:50,869 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 250 [2018-10-01 00:36:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:50,869 INFO L225 Difference]: With dead ends: 254 [2018-10-01 00:36:50,869 INFO L226 Difference]: Without dead ends: 252 [2018-10-01 00:36:50,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:36:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-01 00:36:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-10-01 00:36:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-10-01 00:36:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-10-01 00:36:50,872 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-10-01 00:36:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:50,873 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-10-01 00:36:50,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-10-01 00:36:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-10-01 00:36:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-01 00:36:50,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:50,873 INFO L375 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-10-01 00:36:50,873 INFO L423 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:50,874 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash -986808189, now seen corresponding path program 248 times [2018-10-01 00:36:50,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:50,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:50,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:50,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:50,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:52,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:52,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:52,907 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:36:53,093 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:36:53,094 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:53,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:53,604 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:53,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250, 250] total 250 [2018-10-01 00:36:53,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-10-01 00:36:53,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-10-01 00:36:53,609 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:53,609 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 251 states. [2018-10-01 00:36:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:57,897 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-01 00:36:57,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-10-01 00:36:57,897 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 251 [2018-10-01 00:36:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:57,898 INFO L225 Difference]: With dead ends: 255 [2018-10-01 00:36:57,898 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 00:36:57,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:36:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 00:36:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-01 00:36:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-01 00:36:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-01 00:36:57,901 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-10-01 00:36:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:57,901 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-01 00:36:57,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-10-01 00:36:57,902 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-01 00:36:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-01 00:36:57,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:57,902 INFO L375 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-10-01 00:36:57,902 INFO L423 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:57,902 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:57,903 INFO L82 PathProgramCache]: Analyzing trace with hash -526280980, now seen corresponding path program 249 times [2018-10-01 00:36:57,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:57,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:57,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:57,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:57,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:59,979 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:59,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:59,986 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:37:00,497 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 126 check-sat command(s) [2018-10-01 00:37:00,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:00,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:01,025 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:01,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251, 251] total 251 [2018-10-01 00:37:01,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-10-01 00:37:01,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-10-01 00:37:01,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:01,030 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 252 states. [2018-10-01 00:37:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:06,987 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-10-01 00:37:06,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-10-01 00:37:06,987 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 252 [2018-10-01 00:37:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:06,987 INFO L225 Difference]: With dead ends: 256 [2018-10-01 00:37:06,987 INFO L226 Difference]: Without dead ends: 254 [2018-10-01 00:37:06,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:37:06,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-01 00:37:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-10-01 00:37:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-01 00:37:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-10-01 00:37:06,990 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-10-01 00:37:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:06,990 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-10-01 00:37:06,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-10-01 00:37:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-10-01 00:37:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-01 00:37:06,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:06,991 INFO L375 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-10-01 00:37:06,991 INFO L423 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:06,991 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:06,991 INFO L82 PathProgramCache]: Analyzing trace with hash 865160611, now seen corresponding path program 250 times [2018-10-01 00:37:06,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:06,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:06,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:06,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:06,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:09,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:09,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:09,062 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:37:09,249 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:37:09,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:09,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:09,806 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:09,807 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252, 252] total 252 [2018-10-01 00:37:09,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-10-01 00:37:09,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-10-01 00:37:09,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:09,814 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 253 states. [2018-10-01 00:37:16,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:16,091 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 00:37:16,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-10-01 00:37:16,091 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 253 [2018-10-01 00:37:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:16,092 INFO L225 Difference]: With dead ends: 257 [2018-10-01 00:37:16,092 INFO L226 Difference]: Without dead ends: 255 [2018-10-01 00:37:16,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:37:16,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-01 00:37:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-01 00:37:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 00:37:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-01 00:37:16,095 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-10-01 00:37:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:16,095 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-01 00:37:16,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-10-01 00:37:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-01 00:37:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 00:37:16,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:16,096 INFO L375 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-10-01 00:37:16,096 INFO L423 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:16,096 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:16,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1050176972, now seen corresponding path program 251 times [2018-10-01 00:37:16,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:16,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:16,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:16,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:16,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:18,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:18,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:18,150 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:37:18,658 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 127 check-sat command(s) [2018-10-01 00:37:18,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:18,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:19,186 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:19,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253, 253] total 253 [2018-10-01 00:37:19,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-10-01 00:37:19,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-10-01 00:37:19,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:19,191 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 254 states. [2018-10-01 00:37:24,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:24,282 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-10-01 00:37:24,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-10-01 00:37:24,283 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 254 [2018-10-01 00:37:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:24,283 INFO L225 Difference]: With dead ends: 258 [2018-10-01 00:37:24,283 INFO L226 Difference]: Without dead ends: 256 [2018-10-01 00:37:24,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:37:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-01 00:37:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-01 00:37:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-01 00:37:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-10-01 00:37:24,286 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 254 [2018-10-01 00:37:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:24,286 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-10-01 00:37:24,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-10-01 00:37:24,287 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-10-01 00:37:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-01 00:37:24,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:24,287 INFO L375 BasicCegarLoop]: trace histogram [252, 1, 1, 1] [2018-10-01 00:37:24,287 INFO L423 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:24,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:24,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1804250429, now seen corresponding path program 252 times [2018-10-01 00:37:24,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:24,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:24,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:24,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:24,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:26,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:26,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:26,598 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:37:27,063 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-10-01 00:37:27,064 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:27,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:27,584 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:27,584 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [254, 254] total 254 [2018-10-01 00:37:27,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 255 states [2018-10-01 00:37:27,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2018-10-01 00:37:27,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:27,589 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 255 states. [2018-10-01 00:37:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:32,459 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-10-01 00:37:32,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2018-10-01 00:37:32,460 INFO L78 Accepts]: Start accepts. Automaton has 255 states. Word has length 255 [2018-10-01 00:37:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:32,460 INFO L225 Difference]: With dead ends: 259 [2018-10-01 00:37:32,460 INFO L226 Difference]: Without dead ends: 257 [2018-10-01 00:37:32,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:37:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-01 00:37:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-10-01 00:37:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-01 00:37:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-10-01 00:37:32,463 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 255 [2018-10-01 00:37:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:32,464 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-10-01 00:37:32,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 255 states. [2018-10-01 00:37:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-10-01 00:37:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-01 00:37:32,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:32,464 INFO L375 BasicCegarLoop]: trace histogram [253, 1, 1, 1] [2018-10-01 00:37:32,465 INFO L423 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:32,465 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:32,465 INFO L82 PathProgramCache]: Analyzing trace with hash -97186644, now seen corresponding path program 253 times [2018-10-01 00:37:32,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:32,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:32,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:32,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:32,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:34,594 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:34,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:34,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:37:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:34,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:35,313 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:35,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255] total 255 [2018-10-01 00:37:35,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-10-01 00:37:35,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-10-01 00:37:35,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:35,318 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 256 states. [2018-10-01 00:37:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:40,503 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-10-01 00:37:40,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2018-10-01 00:37:40,503 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 256 [2018-10-01 00:37:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:40,504 INFO L225 Difference]: With dead ends: 260 [2018-10-01 00:37:40,504 INFO L226 Difference]: Without dead ends: 258 [2018-10-01 00:37:40,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:37:40,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-01 00:37:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-10-01 00:37:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-10-01 00:37:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-10-01 00:37:40,507 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 256 [2018-10-01 00:37:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:40,507 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-10-01 00:37:40,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-10-01 00:37:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-10-01 00:37:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-01 00:37:40,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:40,508 INFO L375 BasicCegarLoop]: trace histogram [254, 1, 1, 1] [2018-10-01 00:37:40,508 INFO L423 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:40,509 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:40,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1282183139, now seen corresponding path program 254 times [2018-10-01 00:37:40,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:40,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:40,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:40,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:37:40,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 32385 backedges. 0 proven. 32385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:42,905 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:42,906 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:42,913 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:37:43,104 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:37:43,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:43,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 32385 backedges. 0 proven. 32385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:43,662 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:43,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256] total 256 [2018-10-01 00:37:43,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 257 states [2018-10-01 00:37:43,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2018-10-01 00:37:43,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:43,666 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 257 states. [2018-10-01 00:37:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:49,509 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-01 00:37:49,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2018-10-01 00:37:49,509 INFO L78 Accepts]: Start accepts. Automaton has 257 states. Word has length 257 [2018-10-01 00:37:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:49,510 INFO L225 Difference]: With dead ends: 261 [2018-10-01 00:37:49,510 INFO L226 Difference]: Without dead ends: 259 [2018-10-01 00:37:49,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:37:49,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-01 00:37:49,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-01 00:37:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-01 00:37:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-01 00:37:49,513 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 257 [2018-10-01 00:37:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:49,513 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-01 00:37:49,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 257 states. [2018-10-01 00:37:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-01 00:37:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-01 00:37:49,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:49,515 INFO L375 BasicCegarLoop]: trace histogram [255, 1, 1, 1] [2018-10-01 00:37:49,515 INFO L423 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:49,515 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:49,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1092973452, now seen corresponding path program 255 times [2018-10-01 00:37:49,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:49,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:49,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:49,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:49,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:51,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:51,849 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:51,867 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:37:52,368 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 129 check-sat command(s) [2018-10-01 00:37:52,369 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:52,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:52,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:53,137 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 257] total 257 [2018-10-01 00:37:53,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 258 states [2018-10-01 00:37:53,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2018-10-01 00:37:53,144 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:53,144 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 258 states. [2018-10-01 00:37:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:59,437 INFO L93 Difference]: Finished difference Result 262 states and 262 transitions. [2018-10-01 00:37:59,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2018-10-01 00:37:59,438 INFO L78 Accepts]: Start accepts. Automaton has 258 states. Word has length 258 [2018-10-01 00:37:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:59,439 INFO L225 Difference]: With dead ends: 262 [2018-10-01 00:37:59,439 INFO L226 Difference]: Without dead ends: 260 [2018-10-01 00:37:59,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:37:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-01 00:37:59,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-10-01 00:37:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-10-01 00:37:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-10-01 00:37:59,443 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 258 [2018-10-01 00:37:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:59,443 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-10-01 00:37:59,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 258 states. [2018-10-01 00:37:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-10-01 00:37:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-01 00:37:59,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:59,445 INFO L375 BasicCegarLoop]: trace histogram [256, 1, 1, 1] [2018-10-01 00:37:59,445 INFO L423 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:59,445 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:59,445 INFO L82 PathProgramCache]: Analyzing trace with hash -477559549, now seen corresponding path program 256 times [2018-10-01 00:37:59,445 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:59,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:59,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:59,446 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:59,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 32896 backedges. 0 proven. 32896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:01,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:01,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:01,806 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:38:01,994 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:38:01,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:02,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 32896 backedges. 0 proven. 32896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:02,571 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:02,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [258, 258] total 258 [2018-10-01 00:38:02,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 259 states [2018-10-01 00:38:02,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 259 interpolants. [2018-10-01 00:38:02,575 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:02,576 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 259 states. [2018-10-01 00:38:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:09,058 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-10-01 00:38:09,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2018-10-01 00:38:09,059 INFO L78 Accepts]: Start accepts. Automaton has 259 states. Word has length 259 [2018-10-01 00:38:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:09,059 INFO L225 Difference]: With dead ends: 263 [2018-10-01 00:38:09,059 INFO L226 Difference]: Without dead ends: 261 [2018-10-01 00:38:09,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:38:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-01 00:38:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-10-01 00:38:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-10-01 00:38:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-10-01 00:38:09,063 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 259 [2018-10-01 00:38:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:09,063 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-10-01 00:38:09,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 259 states. [2018-10-01 00:38:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-10-01 00:38:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-01 00:38:09,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:09,064 INFO L375 BasicCegarLoop]: trace histogram [257, 1, 1, 1] [2018-10-01 00:38:09,064 INFO L423 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:09,064 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:09,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1919442324, now seen corresponding path program 257 times [2018-10-01 00:38:09,064 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:09,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:09,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:09,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:09,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 33153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:11,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:11,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:11,288 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:11,828 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2018-10-01 00:38:11,828 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:11,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 33153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:12,426 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:12,427 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [259, 259] total 259 [2018-10-01 00:38:12,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 260 states [2018-10-01 00:38:12,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2018-10-01 00:38:12,431 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:12,431 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 260 states. [2018-10-01 00:38:19,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:19,004 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2018-10-01 00:38:19,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2018-10-01 00:38:19,004 INFO L78 Accepts]: Start accepts. Automaton has 260 states. Word has length 260 [2018-10-01 00:38:19,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:19,005 INFO L225 Difference]: With dead ends: 264 [2018-10-01 00:38:19,005 INFO L226 Difference]: Without dead ends: 262 [2018-10-01 00:38:19,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:38:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-10-01 00:38:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-10-01 00:38:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-10-01 00:38:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-10-01 00:38:19,008 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 260 [2018-10-01 00:38:19,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:19,008 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-10-01 00:38:19,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 260 states. [2018-10-01 00:38:19,008 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-10-01 00:38:19,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-01 00:38:19,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:19,009 INFO L375 BasicCegarLoop]: trace histogram [258, 1, 1, 1] [2018-10-01 00:38:19,009 INFO L423 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:19,009 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:19,009 INFO L82 PathProgramCache]: Analyzing trace with hash 626831907, now seen corresponding path program 258 times [2018-10-01 00:38:19,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:19,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:19,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:19,010 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:19,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 33411 backedges. 0 proven. 33411 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:21,226 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:21,226 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:21,234 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:21,723 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 130 check-sat command(s) [2018-10-01 00:38:21,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:21,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 33411 backedges. 0 proven. 33411 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:22,474 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:22,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [260, 260] total 260 [2018-10-01 00:38:22,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 261 states [2018-10-01 00:38:22,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 261 interpolants. [2018-10-01 00:38:22,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:22,480 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 261 states. [2018-10-01 00:38:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:28,583 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-01 00:38:28,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2018-10-01 00:38:28,584 INFO L78 Accepts]: Start accepts. Automaton has 261 states. Word has length 261 [2018-10-01 00:38:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:28,584 INFO L225 Difference]: With dead ends: 265 [2018-10-01 00:38:28,584 INFO L226 Difference]: Without dead ends: 263 [2018-10-01 00:38:28,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:38:28,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-01 00:38:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-01 00:38:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-01 00:38:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-10-01 00:38:28,587 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 261 [2018-10-01 00:38:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:28,588 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-10-01 00:38:28,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 261 states. [2018-10-01 00:38:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-10-01 00:38:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-01 00:38:28,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:28,588 INFO L375 BasicCegarLoop]: trace histogram [259, 1, 1, 1] [2018-10-01 00:38:28,589 INFO L423 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:28,589 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:28,589 INFO L82 PathProgramCache]: Analyzing trace with hash -2043045556, now seen corresponding path program 259 times [2018-10-01 00:38:28,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:28,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:28,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:28,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:28,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 33670 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:30,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:30,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:30,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:30,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 33670 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:31,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:31,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [261, 261] total 261 [2018-10-01 00:38:31,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 262 states [2018-10-01 00:38:31,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 262 interpolants. [2018-10-01 00:38:31,504 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:31,505 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 262 states. [2018-10-01 00:38:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:36,183 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions. [2018-10-01 00:38:36,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2018-10-01 00:38:36,183 INFO L78 Accepts]: Start accepts. Automaton has 262 states. Word has length 262 [2018-10-01 00:38:36,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:36,184 INFO L225 Difference]: With dead ends: 266 [2018-10-01 00:38:36,184 INFO L226 Difference]: Without dead ends: 264 [2018-10-01 00:38:36,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:38:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-10-01 00:38:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-10-01 00:38:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-01 00:38:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-10-01 00:38:36,187 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 262 [2018-10-01 00:38:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:36,187 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-10-01 00:38:36,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 262 states. [2018-10-01 00:38:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-10-01 00:38:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-01 00:38:36,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:36,188 INFO L375 BasicCegarLoop]: trace histogram [260, 1, 1, 1] [2018-10-01 00:38:36,188 INFO L423 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:36,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:36,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1090099011, now seen corresponding path program 260 times [2018-10-01 00:38:36,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:36,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:36,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:36,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:36,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 33930 backedges. 0 proven. 33930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:38,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:38,663 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:38,670 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:38,864 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:38,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:38,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 33930 backedges. 0 proven. 33930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:39,404 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:39,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [262, 262] total 262 [2018-10-01 00:38:39,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 263 states [2018-10-01 00:38:39,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 263 interpolants. [2018-10-01 00:38:39,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:39,408 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 263 states. [2018-10-01 00:38:45,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:45,157 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-10-01 00:38:45,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2018-10-01 00:38:45,157 INFO L78 Accepts]: Start accepts. Automaton has 263 states. Word has length 263 [2018-10-01 00:38:45,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:45,157 INFO L225 Difference]: With dead ends: 267 [2018-10-01 00:38:45,157 INFO L226 Difference]: Without dead ends: 265 [2018-10-01 00:38:45,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 00:38:45,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-01 00:38:45,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-10-01 00:38:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-01 00:38:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-10-01 00:38:45,161 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 263 [2018-10-01 00:38:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:45,161 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-10-01 00:38:45,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 263 states. [2018-10-01 00:38:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-10-01 00:38:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-01 00:38:45,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:45,162 INFO L375 BasicCegarLoop]: trace histogram [261, 1, 1, 1] [2018-10-01 00:38:45,162 INFO L423 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:45,162 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:45,162 INFO L82 PathProgramCache]: Analyzing trace with hash -566667220, now seen corresponding path program 261 times [2018-10-01 00:38:45,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:45,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:45,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:45,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-01 00:38:46,786 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 00:38:46,791 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 00:38:46,791 INFO L202 PluginConnector]: Adding new model const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 12:38:46 BoogieIcfgContainer [2018-10-01 00:38:46,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 00:38:46,792 INFO L168 Benchmark]: Toolchain (without parser) took 801125.41 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -400.3 MB). Peak memory consumption was 687.6 MB. Max. memory is 7.1 GB. [2018-10-01 00:38:46,793 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 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. [2018-10-01 00:38:46,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.73 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. [2018-10-01 00:38:46,794 INFO L168 Benchmark]: Boogie Preprocessor took 18.67 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. [2018-10-01 00:38:46,794 INFO L168 Benchmark]: RCFGBuilder took 291.93 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. [2018-10-01 00:38:46,795 INFO L168 Benchmark]: TraceAbstraction took 800769.11 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -421.5 MB). Peak memory consumption was 666.4 MB. Max. memory is 7.1 GB. [2018-10-01 00:38:46,797 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.67 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 291.93 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 800769.11 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -421.5 MB). Peak memory consumption was 666.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 265 with TraceHistMax 261, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 263 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 800.7s OverallTime, 262 OverallIterations, 261 TraceHistogramMax, 415.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 784 SDtfs, 0 SDslu, 13855 SDs, 0 SdLazy, 48306 SolverSat, 610 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68902 GetRequests, 34711 SyntacticMatches, 0 SemanticMatches, 34191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 303.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=261, 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: 0.6s AutomataMinimizationTime, 261 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 5.6s SsaConstructionTime, 37.1s SatisfiabilityAnalysisTime, 326.4s InterpolantComputationTime, 69423 NumberOfCodeBlocks, 69423 NumberOfCodeBlocksAsserted, 9079 NumberOfCheckSat, 68902 ConstructedInterpolants, 0 QuantifiedInterpolants, 36037828 SizeOfPredicates, 260 NumberOfNonLiveVariables, 208260 ConjunctsInSsa, 34450 ConjunctsInUnsatCore, 521 InterpolantComputations, 1 PerfectInterpolantSequences, 0/5926440 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/const1.i_3.bplTransformedIcfg_BEv2_6.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_00-38-46-805.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/const1.i_3.bplTransformedIcfg_BEv2_6.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_00-38-46-805.csv Completed graceful shutdown