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/down.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:05:46,461 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:05:46,463 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:05:46,475 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-03 09:05:46,505 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-03 09:05:46,519 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:05:46,520 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:05:46,520 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:05:46,521 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:05:46,521 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:05:46,521 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:05:46,522 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:05:46,522 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:05:46,522 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:05:46,522 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:05:46,523 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:05:46,523 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:05:46,523 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:05:46,523 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:05:46,523 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:05:46,523 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:05:46,524 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:05:46,524 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:05:46,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:05:46,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:05:46,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:05:46,525 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:05:46,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:05:46,525 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:05:46,525 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:05:46,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:05:46,526 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:05:46,526 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:05:46,526 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:05:46,526 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:05:46,526 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:05:46,570 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:05:46,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:05:46,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:05:46,594 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:05:46,595 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:05:46,596 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-03 09:05:46,596 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-10-03 09:05:46,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:05:46,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:05:46,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:05:46,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:05:46,662 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:05:46,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... [2018-10-03 09:05:46,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... [2018-10-03 09:05:46,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:05:46,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:05:46,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:05:46,706 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:05:46,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... [2018-10-03 09:05:46,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... [2018-10-03 09:05:46,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... [2018-10-03 09:05:46,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... [2018-10-03 09:05:46,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... [2018-10-03 09:05:46,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... [2018-10-03 09:05:46,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... [2018-10-03 09:05:46,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:05:46,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:05:46,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:05:46,732 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:05:46,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:05:46,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-03 09:05:46,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 09:05:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 09:05:47,054 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 09:05:47,055 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:05:47 BoogieIcfgContainer [2018-10-03 09:05:47,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:05:47,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:05:47,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:05:47,059 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:05:47,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:05:46" (1/2) ... [2018-10-03 09:05:47,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e15288 and model type down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:05:47, skipping insertion in model container [2018-10-03 09:05:47,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:05:47" (2/2) ... [2018-10-03 09:05:47,063 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-03 09:05:47,072 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:05:47,080 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:05:47,129 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:05:47,130 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:05:47,130 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:05:47,130 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:05:47,130 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:05:47,131 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:05:47,131 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:05:47,131 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:05:47,131 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:05:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-03 09:05:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-03 09:05:47,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:47,156 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:05:47,157 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:47,163 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:47,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1951930377, now seen corresponding path program 1 times [2018-10-03 09:05:47,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:47,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:47,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:47,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:47,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:05:47,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:05:47,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:05:47,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:05:47,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:47,354 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-03 09:05:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:47,492 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-10-03 09:05:47,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:05:47,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-03 09:05:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:47,510 INFO L225 Difference]: With dead ends: 23 [2018-10-03 09:05:47,510 INFO L226 Difference]: Without dead ends: 15 [2018-10-03 09:05:47,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-03 09:05:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-03 09:05:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2018-10-03 09:05:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 09:05:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-10-03 09:05:47,554 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2018-10-03 09:05:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:47,554 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-10-03 09:05:47,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:05:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2018-10-03 09:05:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-03 09:05:47,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:47,555 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:05:47,556 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:47,556 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:47,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1951989959, now seen corresponding path program 1 times [2018-10-03 09:05:47,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:47,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:47,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:47,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:47,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:05:47,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-03 09:05:47,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:05:47,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:05:47,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:47,645 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand 4 states. [2018-10-03 09:05:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:47,710 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2018-10-03 09:05:47,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:05:47,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-03 09:05:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:47,712 INFO L225 Difference]: With dead ends: 20 [2018-10-03 09:05:47,712 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 09:05:47,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-03 09:05:47,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 09:05:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-03 09:05:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 09:05:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-10-03 09:05:47,717 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2018-10-03 09:05:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:47,718 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-10-03 09:05:47,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:05:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2018-10-03 09:05:47,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:05:47,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:47,719 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:05:47,719 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:47,719 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:47,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1455783312, now seen corresponding path program 1 times [2018-10-03 09:05:47,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:47,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:47,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:47,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-03 09:05:47,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:05:47,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-03 09:05:47,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:05:47,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:05:47,800 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:47,800 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 4 states. [2018-10-03 09:05:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:47,865 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2018-10-03 09:05:47,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:05:47,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-03 09:05:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:47,866 INFO L225 Difference]: With dead ends: 19 [2018-10-03 09:05:47,866 INFO L226 Difference]: Without dead ends: 17 [2018-10-03 09:05:47,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-03 09:05:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-03 09:05:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2018-10-03 09:05:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 09:05:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-10-03 09:05:47,873 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2018-10-03 09:05:47,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:47,873 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-10-03 09:05:47,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:05:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-10-03 09:05:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:05:47,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:47,874 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:05:47,875 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:47,875 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:47,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1455723730, now seen corresponding path program 1 times [2018-10-03 09:05:47,875 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:47,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:47,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:47,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:47,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:05:47,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-03 09:05:47,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:05:47,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:05:47,982 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:47,982 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2018-10-03 09:05:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:48,054 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2018-10-03 09:05:48,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:05:48,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-03 09:05:48,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:48,057 INFO L225 Difference]: With dead ends: 25 [2018-10-03 09:05:48,058 INFO L226 Difference]: Without dead ends: 19 [2018-10-03 09:05:48,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 2 [2018-10-03 09:05:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-03 09:05:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-10-03 09:05:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-03 09:05:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-10-03 09:05:48,070 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2018-10-03 09:05:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:48,070 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-10-03 09:05:48,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:05:48,070 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-10-03 09:05:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-03 09:05:48,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:48,071 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:05:48,072 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:48,073 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:48,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1394403420, now seen corresponding path program 1 times [2018-10-03 09:05:48,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:48,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:48,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:48,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:48,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:48,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:48,212 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:48,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:48,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:48,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:48,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:05:48,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:05:48,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:05:48,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:48,512 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2018-10-03 09:05:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:48,698 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-10-03 09:05:48,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:05:48,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-10-03 09:05:48,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:48,700 INFO L225 Difference]: With dead ends: 31 [2018-10-03 09:05:48,700 INFO L226 Difference]: Without dead ends: 16 [2018-10-03 09:05:48,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 6 [2018-10-03 09:05:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-03 09:05:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-03 09:05:48,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-03 09:05:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-10-03 09:05:48,706 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2018-10-03 09:05:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:48,706 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-10-03 09:05:48,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:05:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-10-03 09:05:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-03 09:05:48,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:48,708 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:05:48,708 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:48,708 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:48,709 INFO L82 PathProgramCache]: Analyzing trace with hash -961145443, now seen corresponding path program 2 times [2018-10-03 09:05:48,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:48,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:48,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:48,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:48,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:48,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:48,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:48,810 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:48,842 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:48,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:48,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:48,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:48,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-03 09:05:48,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:05:48,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:05:48,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:48,935 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2018-10-03 09:05:49,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:49,068 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-10-03 09:05:49,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:05:49,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-03 09:05:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:49,073 INFO L225 Difference]: With dead ends: 30 [2018-10-03 09:05:49,073 INFO L226 Difference]: Without dead ends: 24 [2018-10-03 09:05:49,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-03 09:05:49,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-03 09:05:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-10-03 09:05:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-03 09:05:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-03 09:05:49,080 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 13 [2018-10-03 09:05:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:49,080 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-03 09:05:49,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:05:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-03 09:05:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-03 09:05:49,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:49,082 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2018-10-03 09:05:49,082 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:49,082 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:49,082 INFO L82 PathProgramCache]: Analyzing trace with hash -552275309, now seen corresponding path program 3 times [2018-10-03 09:05:49,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:49,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:49,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:49,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:49,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:49,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:49,186 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:49,200 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:49,252 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-03 09:05:49,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:49,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:49,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:49,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:05:49,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:05:49,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:05:49,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:49,343 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2018-10-03 09:05:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:49,630 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-10-03 09:05:49,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:05:49,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-10-03 09:05:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:49,631 INFO L225 Difference]: With dead ends: 40 [2018-10-03 09:05:49,631 INFO L226 Difference]: Without dead ends: 21 [2018-10-03 09:05:49,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 7 [2018-10-03 09:05:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-03 09:05:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-03 09:05:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-03 09:05:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-03 09:05:49,649 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2018-10-03 09:05:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:49,651 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-03 09:05:49,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:05:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-03 09:05:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 09:05:49,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:49,653 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2018-10-03 09:05:49,653 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:49,653 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:49,654 INFO L82 PathProgramCache]: Analyzing trace with hash 2071906362, now seen corresponding path program 4 times [2018-10-03 09:05:49,654 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:49,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:49,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:49,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:49,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:50,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:50,038 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:50,046 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:50,061 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:50,062 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:50,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:50,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:50,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:05:50,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:05:50,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:05:50,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:50,297 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2018-10-03 09:05:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:50,345 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-10-03 09:05:50,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:05:50,345 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-03 09:05:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:50,346 INFO L225 Difference]: With dead ends: 35 [2018-10-03 09:05:50,346 INFO L226 Difference]: Without dead ends: 29 [2018-10-03 09:05:50,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 4 [2018-10-03 09:05:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-03 09:05:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2018-10-03 09:05:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-03 09:05:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-03 09:05:50,352 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 18 [2018-10-03 09:05:50,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:50,353 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-03 09:05:50,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:05:50,353 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-03 09:05:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 09:05:50,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:50,354 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:05:50,354 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:50,355 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash -992407888, now seen corresponding path program 5 times [2018-10-03 09:05:50,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:50,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:50,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:50,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:50,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:50,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:50,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:50,492 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:50,532 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-03 09:05:50,533 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:50,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:50,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:50,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:05:50,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:05:50,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:05:50,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:50,640 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 10 states. [2018-10-03 09:05:50,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:50,762 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-10-03 09:05:50,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:05:50,762 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-10-03 09:05:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:50,763 INFO L225 Difference]: With dead ends: 49 [2018-10-03 09:05:50,763 INFO L226 Difference]: Without dead ends: 26 [2018-10-03 09:05:50,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9 [2018-10-03 09:05:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-03 09:05:50,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-03 09:05:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-03 09:05:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-10-03 09:05:50,770 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2018-10-03 09:05:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:50,770 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-10-03 09:05:50,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:05:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-10-03 09:05:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-03 09:05:50,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:50,772 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-03 09:05:50,772 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:50,772 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 390441321, now seen corresponding path program 6 times [2018-10-03 09:05:50,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:50,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:50,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:50,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:50,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:50,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:50,909 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:50,918 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:50,935 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-03 09:05:50,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:50,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:51,045 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:51,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-03 09:05:51,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:05:51,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:05:51,046 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:51,046 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2018-10-03 09:05:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:51,107 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-10-03 09:05:51,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:05:51,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-10-03 09:05:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:51,109 INFO L225 Difference]: With dead ends: 40 [2018-10-03 09:05:51,109 INFO L226 Difference]: Without dead ends: 34 [2018-10-03 09:05:51,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5 [2018-10-03 09:05:51,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-03 09:05:51,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-10-03 09:05:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-03 09:05:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-10-03 09:05:51,116 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2018-10-03 09:05:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:51,117 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-10-03 09:05:51,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:05:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-10-03 09:05:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-03 09:05:51,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:51,118 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2018-10-03 09:05:51,118 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:51,118 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1927135327, now seen corresponding path program 7 times [2018-10-03 09:05:51,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:51,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:51,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:51,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:51,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:51,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:51,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:51,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:51,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:51,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:51,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:05:51,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:05:51,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:05:51,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:51,494 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 12 states. [2018-10-03 09:05:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:51,725 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-10-03 09:05:51,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:05:51,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-10-03 09:05:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:51,726 INFO L225 Difference]: With dead ends: 58 [2018-10-03 09:05:51,727 INFO L226 Difference]: Without dead ends: 31 [2018-10-03 09:05:51,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 11 [2018-10-03 09:05:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-03 09:05:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-03 09:05:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-03 09:05:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-03 09:05:51,734 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2018-10-03 09:05:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:51,734 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-03 09:05:51,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:05:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-03 09:05:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 09:05:51,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:51,736 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2018-10-03 09:05:51,736 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:51,736 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:51,736 INFO L82 PathProgramCache]: Analyzing trace with hash -906890938, now seen corresponding path program 8 times [2018-10-03 09:05:51,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:51,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:51,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:51,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:51,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:51,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:51,959 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:51,976 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:52,000 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:52,000 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:52,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:52,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:52,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:05:52,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:05:52,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:05:52,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:52,165 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 8 states. [2018-10-03 09:05:52,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:52,305 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-10-03 09:05:52,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:05:52,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-10-03 09:05:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:52,309 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:05:52,309 INFO L226 Difference]: Without dead ends: 39 [2018-10-03 09:05:52,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 6 [2018-10-03 09:05:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-03 09:05:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-10-03 09:05:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-03 09:05:52,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-10-03 09:05:52,320 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2018-10-03 09:05:52,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:52,320 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-10-03 09:05:52,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:05:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-10-03 09:05:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-03 09:05:52,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:52,322 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1] [2018-10-03 09:05:52,322 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:52,322 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:52,323 INFO L82 PathProgramCache]: Analyzing trace with hash -466038340, now seen corresponding path program 9 times [2018-10-03 09:05:52,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:52,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:52,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:52,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:52,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:52,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:52,479 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:52,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:52,590 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-03 09:05:52,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:52,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:52,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:52,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:05:52,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:05:52,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:05:52,844 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:52,844 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 14 states. [2018-10-03 09:05:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:53,106 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-10-03 09:05:53,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:05:53,107 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2018-10-03 09:05:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:53,108 INFO L225 Difference]: With dead ends: 67 [2018-10-03 09:05:53,108 INFO L226 Difference]: Without dead ends: 36 [2018-10-03 09:05:53,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-03 09:05:53,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-03 09:05:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-03 09:05:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-03 09:05:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-10-03 09:05:53,115 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 32 [2018-10-03 09:05:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:53,115 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-10-03 09:05:53,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:05:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-10-03 09:05:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-03 09:05:53,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:53,117 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2018-10-03 09:05:53,117 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:53,117 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:53,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1282545973, now seen corresponding path program 10 times [2018-10-03 09:05:53,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:53,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:53,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:53,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:53,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:53,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:53,263 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:53,270 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:53,307 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:53,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:53,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:53,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:53,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-03 09:05:53,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:05:53,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:05:53,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:53,670 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 9 states. [2018-10-03 09:05:53,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:53,737 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2018-10-03 09:05:53,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:05:53,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-10-03 09:05:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:53,739 INFO L225 Difference]: With dead ends: 50 [2018-10-03 09:05:53,739 INFO L226 Difference]: Without dead ends: 44 [2018-10-03 09:05:53,739 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.0s impTime 7 [2018-10-03 09:05:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-03 09:05:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-10-03 09:05:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-03 09:05:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-10-03 09:05:53,748 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 33 [2018-10-03 09:05:53,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:53,748 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-10-03 09:05:53,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:05:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-10-03 09:05:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-03 09:05:53,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:53,750 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1] [2018-10-03 09:05:53,750 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:53,750 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:53,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1500867115, now seen corresponding path program 11 times [2018-10-03 09:05:53,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:53,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:53,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:53,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:53,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:53,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:53,911 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:53,919 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:53,945 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-03 09:05:53,946 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:53,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:54,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:54,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:05:54,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:05:54,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:05:54,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:54,121 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 16 states. [2018-10-03 09:05:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:54,472 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-10-03 09:05:54,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:05:54,472 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2018-10-03 09:05:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:54,474 INFO L225 Difference]: With dead ends: 76 [2018-10-03 09:05:54,474 INFO L226 Difference]: Without dead ends: 41 [2018-10-03 09:05:54,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 15 [2018-10-03 09:05:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-03 09:05:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-03 09:05:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-03 09:05:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-03 09:05:54,481 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 37 [2018-10-03 09:05:54,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:54,482 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-03 09:05:54,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:05:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-03 09:05:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:05:54,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:54,483 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2018-10-03 09:05:54,483 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:54,483 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash 594208338, now seen corresponding path program 12 times [2018-10-03 09:05:54,484 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:54,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:54,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:54,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:54,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:54,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:54,682 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:54,691 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:54,711 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 09:05:54,712 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:54,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:54,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:54,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:05:54,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:05:54,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:05:54,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:54,823 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 10 states. [2018-10-03 09:05:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:55,053 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-10-03 09:05:55,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:05:55,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2018-10-03 09:05:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:55,054 INFO L225 Difference]: With dead ends: 55 [2018-10-03 09:05:55,054 INFO L226 Difference]: Without dead ends: 49 [2018-10-03 09:05:55,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 8 [2018-10-03 09:05:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-03 09:05:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-10-03 09:05:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-03 09:05:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-10-03 09:05:55,063 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2018-10-03 09:05:55,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:55,063 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-10-03 09:05:55,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:05:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-10-03 09:05:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-03 09:05:55,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:55,064 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1] [2018-10-03 09:05:55,064 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:55,064 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:55,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1054367944, now seen corresponding path program 13 times [2018-10-03 09:05:55,065 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:55,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:55,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:55,066 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:55,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 112 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:55,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:55,443 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:55,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:55,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 112 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:55,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:55,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:05:55,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:05:55,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:05:55,852 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:55,852 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 18 states. [2018-10-03 09:05:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:56,033 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-10-03 09:05:56,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:05:56,034 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2018-10-03 09:05:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:56,035 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:05:56,035 INFO L226 Difference]: Without dead ends: 46 [2018-10-03 09:05:56,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 17 [2018-10-03 09:05:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-03 09:05:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-03 09:05:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-03 09:05:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-10-03 09:05:56,043 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 42 [2018-10-03 09:05:56,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:56,043 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-10-03 09:05:56,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:05:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-10-03 09:05:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-03 09:05:56,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:56,045 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2018-10-03 09:05:56,045 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:56,045 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:56,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1098736897, now seen corresponding path program 14 times [2018-10-03 09:05:56,045 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:56,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:56,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:56,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:56,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 50 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:56,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:56,259 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:56,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:56,289 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:56,289 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:56,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 50 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:56,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:56,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-03 09:05:56,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-03 09:05:56,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-03 09:05:56,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:56,414 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 11 states. [2018-10-03 09:05:56,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:56,553 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2018-10-03 09:05:56,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:05:56,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2018-10-03 09:05:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:56,555 INFO L225 Difference]: With dead ends: 60 [2018-10-03 09:05:56,555 INFO L226 Difference]: Without dead ends: 54 [2018-10-03 09:05:56,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 9 [2018-10-03 09:05:56,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-03 09:05:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-10-03 09:05:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-03 09:05:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-10-03 09:05:56,564 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 43 [2018-10-03 09:05:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:56,564 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-10-03 09:05:56,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-03 09:05:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-10-03 09:05:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-03 09:05:56,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:56,565 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 1, 1, 1, 1, 1] [2018-10-03 09:05:56,565 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:56,566 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:56,566 INFO L82 PathProgramCache]: Analyzing trace with hash -48369673, now seen corresponding path program 15 times [2018-10-03 09:05:56,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:56,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:56,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:56,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:56,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 144 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:56,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:56,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:56,906 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:56,940 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-03 09:05:56,940 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:56,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:57,057 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 144 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:57,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:57,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:05:57,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:05:57,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:05:57,082 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:57,082 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 20 states. [2018-10-03 09:05:57,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:57,342 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2018-10-03 09:05:57,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:05:57,343 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 47 [2018-10-03 09:05:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:57,344 INFO L225 Difference]: With dead ends: 94 [2018-10-03 09:05:57,344 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 09:05:57,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 19 [2018-10-03 09:05:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 09:05:57,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-03 09:05:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-03 09:05:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-10-03 09:05:57,351 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-10-03 09:05:57,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:57,351 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-10-03 09:05:57,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:05:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-10-03 09:05:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 09:05:57,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:57,356 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2018-10-03 09:05:57,356 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:57,356 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:57,356 INFO L82 PathProgramCache]: Analyzing trace with hash 239052638, now seen corresponding path program 16 times [2018-10-03 09:05:57,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:57,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:57,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:57,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:57,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 61 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:57,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:57,564 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:57,571 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:57,593 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:57,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:57,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 61 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:57,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:57,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:05:57,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:05:57,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:05:57,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:57,700 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 12 states. [2018-10-03 09:05:57,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:57,792 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-10-03 09:05:57,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:05:57,792 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2018-10-03 09:05:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:57,793 INFO L225 Difference]: With dead ends: 65 [2018-10-03 09:05:57,793 INFO L226 Difference]: Without dead ends: 59 [2018-10-03 09:05:57,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 10 [2018-10-03 09:05:57,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-03 09:05:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-10-03 09:05:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-03 09:05:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-03 09:05:57,801 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 48 [2018-10-03 09:05:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:57,802 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-03 09:05:57,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:05:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-03 09:05:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 09:05:57,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:57,803 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 1, 1, 1, 1, 1] [2018-10-03 09:05:57,803 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:57,803 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:57,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1074641876, now seen corresponding path program 17 times [2018-10-03 09:05:57,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:57,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:57,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:57,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:57,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 180 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:58,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:58,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:58,152 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:58,181 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-03 09:05:58,182 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:58,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 180 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:58,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:58,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:05:58,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:05:58,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:05:58,483 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:58,483 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-10-03 09:05:58,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:58,812 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-10-03 09:05:58,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:05:58,813 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 52 [2018-10-03 09:05:58,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:58,813 INFO L225 Difference]: With dead ends: 103 [2018-10-03 09:05:58,813 INFO L226 Difference]: Without dead ends: 56 [2018-10-03 09:05:58,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 21 [2018-10-03 09:05:58,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-03 09:05:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-03 09:05:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-03 09:05:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-10-03 09:05:58,820 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 52 [2018-10-03 09:05:58,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:58,821 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-10-03 09:05:58,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:05:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-10-03 09:05:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-03 09:05:58,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:58,822 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2018-10-03 09:05:58,822 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:58,822 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:58,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1305899827, now seen corresponding path program 18 times [2018-10-03 09:05:58,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:58,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:58,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:58,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:58,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 73 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:59,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:59,067 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:59,075 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:59,110 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-03 09:05:59,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:59,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 73 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:59,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:59,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-03 09:05:59,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 09:05:59,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 09:05:59,229 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:59,229 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 13 states. [2018-10-03 09:05:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:59,290 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2018-10-03 09:05:59,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:05:59,292 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2018-10-03 09:05:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:59,293 INFO L225 Difference]: With dead ends: 70 [2018-10-03 09:05:59,293 INFO L226 Difference]: Without dead ends: 64 [2018-10-03 09:05:59,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-03 09:05:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-03 09:05:59,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-10-03 09:05:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-03 09:05:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-10-03 09:05:59,301 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 53 [2018-10-03 09:05:59,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:59,302 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-10-03 09:05:59,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 09:05:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-10-03 09:05:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-03 09:05:59,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:59,303 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2018-10-03 09:05:59,303 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:59,303 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:59,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1754878403, now seen corresponding path program 19 times [2018-10-03 09:05:59,303 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:59,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:59,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:59,304 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:59,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 220 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:59,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:59,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:59,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:59,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 220 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:59,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:59,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:05:59,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:05:59,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:05:59,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:59,764 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 24 states. [2018-10-03 09:06:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:00,093 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2018-10-03 09:06:00,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:06:00,093 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 57 [2018-10-03 09:06:00,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:00,094 INFO L225 Difference]: With dead ends: 112 [2018-10-03 09:06:00,094 INFO L226 Difference]: Without dead ends: 61 [2018-10-03 09:06:00,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 23 [2018-10-03 09:06:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-03 09:06:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-03 09:06:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-03 09:06:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-10-03 09:06:00,108 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 57 [2018-10-03 09:06:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:00,108 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-10-03 09:06:00,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:06:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-10-03 09:06:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:06:00,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:00,109 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2018-10-03 09:06:00,110 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:00,110 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:00,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1471794070, now seen corresponding path program 20 times [2018-10-03 09:06:00,110 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:00,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:00,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:00,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:00,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:00,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:00,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:00,291 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:00,319 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:00,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:00,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:00,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:00,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:06:00,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:06:00,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:06:00,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:00,451 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 14 states. [2018-10-03 09:06:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:00,579 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2018-10-03 09:06:00,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:06:00,579 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2018-10-03 09:06:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:00,579 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:06:00,579 INFO L226 Difference]: Without dead ends: 69 [2018-10-03 09:06:00,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 12 [2018-10-03 09:06:00,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-03 09:06:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2018-10-03 09:06:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-03 09:06:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-10-03 09:06:00,586 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 58 [2018-10-03 09:06:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:00,586 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-10-03 09:06:00,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:06:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-10-03 09:06:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-03 09:06:00,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:00,587 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 1, 1, 1, 1, 1] [2018-10-03 09:06:00,588 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:00,588 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:00,588 INFO L82 PathProgramCache]: Analyzing trace with hash 716104416, now seen corresponding path program 21 times [2018-10-03 09:06:00,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:00,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:00,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:00,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:00,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 264 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:01,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:01,186 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:01,197 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:01,229 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-03 09:06:01,229 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:01,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 264 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:01,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:01,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:06:01,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:06:01,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:06:01,397 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:01,397 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 26 states. [2018-10-03 09:06:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:01,723 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-10-03 09:06:01,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:06:01,723 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-10-03 09:06:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:01,724 INFO L225 Difference]: With dead ends: 121 [2018-10-03 09:06:01,724 INFO L226 Difference]: Without dead ends: 66 [2018-10-03 09:06:01,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 25 [2018-10-03 09:06:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-03 09:06:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-03 09:06:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-03 09:06:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2018-10-03 09:06:01,729 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 62 [2018-10-03 09:06:01,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:01,729 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2018-10-03 09:06:01,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:06:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2018-10-03 09:06:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-03 09:06:01,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:01,730 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1, 1] [2018-10-03 09:06:01,730 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:01,730 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:01,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1699180391, now seen corresponding path program 22 times [2018-10-03 09:06:01,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:01,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:01,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:01,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:01,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 100 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:02,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:02,682 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:02,689 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:02,740 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:02,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:02,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 100 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:02,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:02,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-03 09:06:02,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 09:06:02,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 09:06:02,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:02,919 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 15 states. [2018-10-03 09:06:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:02,984 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2018-10-03 09:06:02,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:06:02,985 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2018-10-03 09:06:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:02,985 INFO L225 Difference]: With dead ends: 80 [2018-10-03 09:06:02,985 INFO L226 Difference]: Without dead ends: 74 [2018-10-03 09:06:02,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 13 [2018-10-03 09:06:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-03 09:06:02,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2018-10-03 09:06:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-03 09:06:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-10-03 09:06:02,993 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 63 [2018-10-03 09:06:02,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:02,993 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-10-03 09:06:02,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 09:06:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-10-03 09:06:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-03 09:06:02,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:02,994 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2018-10-03 09:06:02,994 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:02,994 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:02,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1490448497, now seen corresponding path program 23 times [2018-10-03 09:06:02,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:02,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:02,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:02,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:02,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 312 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:03,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:03,552 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:03,560 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:03,599 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-03 09:06:03,600 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:03,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 312 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:03,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:03,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:06:03,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:06:03,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:06:03,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:03,746 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 28 states. [2018-10-03 09:06:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:04,124 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2018-10-03 09:06:04,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:06:04,124 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 67 [2018-10-03 09:06:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:04,125 INFO L225 Difference]: With dead ends: 130 [2018-10-03 09:06:04,125 INFO L226 Difference]: Without dead ends: 71 [2018-10-03 09:06:04,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 27 [2018-10-03 09:06:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-03 09:06:04,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-03 09:06:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-03 09:06:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-10-03 09:06:04,131 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 67 [2018-10-03 09:06:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:04,132 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-10-03 09:06:04,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:06:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-10-03 09:06:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 09:06:04,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:04,133 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1, 1] [2018-10-03 09:06:04,133 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:04,133 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:04,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1188334966, now seen corresponding path program 24 times [2018-10-03 09:06:04,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:04,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:04,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:04,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:04,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 115 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:04,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:04,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:04,434 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:04,477 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 09:06:04,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:04,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 115 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:04,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:04,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:06:04,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:06:04,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:06:04,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:04,615 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 16 states. [2018-10-03 09:06:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:04,709 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2018-10-03 09:06:04,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:06:04,710 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2018-10-03 09:06:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:04,710 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:06:04,710 INFO L226 Difference]: Without dead ends: 79 [2018-10-03 09:06:04,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 14 [2018-10-03 09:06:04,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-03 09:06:04,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-10-03 09:06:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-03 09:06:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-10-03 09:06:04,717 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 68 [2018-10-03 09:06:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:04,717 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-10-03 09:06:04,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:06:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-10-03 09:06:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-03 09:06:04,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:04,718 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 1, 1, 1, 1, 1] [2018-10-03 09:06:04,719 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:04,719 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:04,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1190013460, now seen corresponding path program 25 times [2018-10-03 09:06:04,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:04,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:04,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:04,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:04,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 364 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:06,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:06,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:06,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:06,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 364 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:06,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:06,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:06:06,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:06:06,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:06:06,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:06,464 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 30 states. [2018-10-03 09:06:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:07,208 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-10-03 09:06:07,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:06:07,209 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 72 [2018-10-03 09:06:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:07,210 INFO L225 Difference]: With dead ends: 139 [2018-10-03 09:06:07,210 INFO L226 Difference]: Without dead ends: 76 [2018-10-03 09:06:07,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 29 [2018-10-03 09:06:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-03 09:06:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-03 09:06:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-03 09:06:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2018-10-03 09:06:07,218 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 72 [2018-10-03 09:06:07,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:07,218 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2018-10-03 09:06:07,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:06:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2018-10-03 09:06:07,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-03 09:06:07,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:07,219 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2018-10-03 09:06:07,220 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:07,220 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:07,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1746112411, now seen corresponding path program 26 times [2018-10-03 09:06:07,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:07,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:07,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:07,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:07,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 131 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:07,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:07,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:07,391 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:07,426 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:07,427 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:07,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 131 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:07,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:07,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-03 09:06:07,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-03 09:06:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-03 09:06:07,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:07,592 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 17 states. [2018-10-03 09:06:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:07,847 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2018-10-03 09:06:07,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:06:07,848 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2018-10-03 09:06:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:07,849 INFO L225 Difference]: With dead ends: 90 [2018-10-03 09:06:07,849 INFO L226 Difference]: Without dead ends: 84 [2018-10-03 09:06:07,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 15 [2018-10-03 09:06:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-03 09:06:07,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2018-10-03 09:06:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-03 09:06:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2018-10-03 09:06:07,857 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 73 [2018-10-03 09:06:07,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:07,858 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2018-10-03 09:06:07,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-03 09:06:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2018-10-03 09:06:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-03 09:06:07,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:07,859 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 1, 1, 1, 1, 1] [2018-10-03 09:06:07,859 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:07,860 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:07,860 INFO L82 PathProgramCache]: Analyzing trace with hash 613460315, now seen corresponding path program 27 times [2018-10-03 09:06:07,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:07,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:07,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:07,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:07,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 420 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:08,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:08,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:08,193 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:08,238 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-03 09:06:08,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:08,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 420 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:08,392 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:08,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:06:08,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:06:08,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:06:08,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:08,393 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 32 states. [2018-10-03 09:06:08,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:08,578 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2018-10-03 09:06:08,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:06:08,578 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 77 [2018-10-03 09:06:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:08,578 INFO L225 Difference]: With dead ends: 148 [2018-10-03 09:06:08,579 INFO L226 Difference]: Without dead ends: 81 [2018-10-03 09:06:08,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 31 [2018-10-03 09:06:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-03 09:06:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-03 09:06:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-03 09:06:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-10-03 09:06:08,584 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 77 [2018-10-03 09:06:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:08,585 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-10-03 09:06:08,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:06:08,585 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-10-03 09:06:08,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:06:08,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:08,585 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1, 1] [2018-10-03 09:06:08,585 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:08,586 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:08,586 INFO L82 PathProgramCache]: Analyzing trace with hash 381727362, now seen corresponding path program 28 times [2018-10-03 09:06:08,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:08,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:08,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:08,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:08,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 148 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:08,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:08,829 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:08,839 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:08,875 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:08,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:08,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 148 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:09,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:09,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:06:09,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:06:09,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:06:09,055 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:09,055 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 18 states. [2018-10-03 09:06:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:09,143 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2018-10-03 09:06:09,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:06:09,144 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2018-10-03 09:06:09,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:09,144 INFO L225 Difference]: With dead ends: 95 [2018-10-03 09:06:09,144 INFO L226 Difference]: Without dead ends: 89 [2018-10-03 09:06:09,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 16 [2018-10-03 09:06:09,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-03 09:06:09,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2018-10-03 09:06:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-03 09:06:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-10-03 09:06:09,152 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 78 [2018-10-03 09:06:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:09,152 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-10-03 09:06:09,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:06:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-10-03 09:06:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-03 09:06:09,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:09,153 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 1, 1, 1, 1, 1] [2018-10-03 09:06:09,153 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:09,153 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:09,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1123248904, now seen corresponding path program 29 times [2018-10-03 09:06:09,154 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:09,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:09,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:09,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:09,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 480 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:10,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:10,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:10,055 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:10,280 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-03 09:06:10,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:10,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 480 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:10,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:10,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:06:10,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:06:10,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:06:10,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:10,629 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 34 states. [2018-10-03 09:06:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:11,098 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-10-03 09:06:11,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:06:11,098 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 82 [2018-10-03 09:06:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:11,099 INFO L225 Difference]: With dead ends: 157 [2018-10-03 09:06:11,099 INFO L226 Difference]: Without dead ends: 86 [2018-10-03 09:06:11,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 33 [2018-10-03 09:06:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-03 09:06:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-03 09:06:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-03 09:06:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2018-10-03 09:06:11,108 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 82 [2018-10-03 09:06:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:11,108 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2018-10-03 09:06:11,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:06:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2018-10-03 09:06:11,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-03 09:06:11,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:11,109 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1, 1] [2018-10-03 09:06:11,109 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:11,109 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:11,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1191652401, now seen corresponding path program 30 times [2018-10-03 09:06:11,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:11,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:11,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:11,110 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:11,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 166 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:11,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:11,539 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:11,548 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:11,598 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-03 09:06:11,598 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:11,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 166 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:11,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:11,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-03 09:06:11,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 09:06:11,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 09:06:11,754 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:11,754 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 19 states. [2018-10-03 09:06:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:11,864 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2018-10-03 09:06:11,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:06:11,864 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2018-10-03 09:06:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:11,865 INFO L225 Difference]: With dead ends: 100 [2018-10-03 09:06:11,865 INFO L226 Difference]: Without dead ends: 94 [2018-10-03 09:06:11,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 17 [2018-10-03 09:06:11,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-03 09:06:11,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2018-10-03 09:06:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-03 09:06:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2018-10-03 09:06:11,871 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 83 [2018-10-03 09:06:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:11,872 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2018-10-03 09:06:11,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 09:06:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2018-10-03 09:06:11,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-03 09:06:11,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:11,873 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 1, 1, 1, 1, 1] [2018-10-03 09:06:11,873 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:11,873 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash 219193127, now seen corresponding path program 31 times [2018-10-03 09:06:11,873 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:11,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:11,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:11,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:11,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 544 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:12,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:12,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:12,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:12,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 544 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:12,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:12,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:06:12,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:06:12,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:06:12,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:12,944 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 36 states. [2018-10-03 09:06:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:13,580 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2018-10-03 09:06:13,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:06:13,580 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 87 [2018-10-03 09:06:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:13,581 INFO L225 Difference]: With dead ends: 166 [2018-10-03 09:06:13,581 INFO L226 Difference]: Without dead ends: 91 [2018-10-03 09:06:13,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.6s impTime 35 [2018-10-03 09:06:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-03 09:06:13,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-03 09:06:13,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-03 09:06:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-10-03 09:06:13,591 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 87 [2018-10-03 09:06:13,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:13,591 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-10-03 09:06:13,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:06:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-10-03 09:06:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 09:06:13,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:13,592 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1, 1] [2018-10-03 09:06:13,592 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:13,592 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:13,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1134517362, now seen corresponding path program 32 times [2018-10-03 09:06:13,592 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:13,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:13,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:13,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:13,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 185 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:13,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:13,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:13,835 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:13,871 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:13,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:13,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 185 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:14,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:14,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:06:14,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:06:14,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:06:14,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:14,050 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 20 states. [2018-10-03 09:06:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:14,158 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2018-10-03 09:06:14,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:06:14,159 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2018-10-03 09:06:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:14,159 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:06:14,159 INFO L226 Difference]: Without dead ends: 99 [2018-10-03 09:06:14,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 18 [2018-10-03 09:06:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-03 09:06:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-10-03 09:06:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-03 09:06:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-10-03 09:06:14,169 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 88 [2018-10-03 09:06:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:14,169 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-10-03 09:06:14,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:06:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-10-03 09:06:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-03 09:06:14,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:14,170 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 1, 1, 1, 1, 1] [2018-10-03 09:06:14,170 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:14,170 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:14,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1074454524, now seen corresponding path program 33 times [2018-10-03 09:06:14,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:14,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:14,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:14,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:14,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 612 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:14,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:14,783 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:14,791 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:14,853 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-03 09:06:14,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:14,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 612 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:15,023 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:15,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:06:15,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:06:15,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:06:15,024 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:15,024 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 38 states. [2018-10-03 09:06:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:15,711 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-10-03 09:06:15,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:06:15,712 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 92 [2018-10-03 09:06:15,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:15,713 INFO L225 Difference]: With dead ends: 175 [2018-10-03 09:06:15,713 INFO L226 Difference]: Without dead ends: 96 [2018-10-03 09:06:15,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 37 [2018-10-03 09:06:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-03 09:06:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-03 09:06:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-03 09:06:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2018-10-03 09:06:15,720 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 92 [2018-10-03 09:06:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:15,720 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2018-10-03 09:06:15,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:06:15,720 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2018-10-03 09:06:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-03 09:06:15,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:15,721 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1, 1] [2018-10-03 09:06:15,721 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:15,721 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:15,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1513438211, now seen corresponding path program 34 times [2018-10-03 09:06:15,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:15,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:15,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:15,723 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:15,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 205 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:16,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:16,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:16,148 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:16,190 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:16,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:16,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 205 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:16,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:16,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-03 09:06:16,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 09:06:16,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 09:06:16,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:16,870 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 21 states. [2018-10-03 09:06:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:16,975 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2018-10-03 09:06:16,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:06:16,975 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2018-10-03 09:06:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:16,976 INFO L225 Difference]: With dead ends: 110 [2018-10-03 09:06:16,976 INFO L226 Difference]: Without dead ends: 104 [2018-10-03 09:06:16,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.2s impTime 19 [2018-10-03 09:06:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-03 09:06:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2018-10-03 09:06:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-03 09:06:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2018-10-03 09:06:16,985 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 93 [2018-10-03 09:06:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:16,985 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2018-10-03 09:06:16,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 09:06:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2018-10-03 09:06:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-03 09:06:16,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:16,986 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 1, 1, 1, 1, 1] [2018-10-03 09:06:16,986 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:16,986 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:16,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1385467661, now seen corresponding path program 35 times [2018-10-03 09:06:16,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:16,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:16,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:16,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:16,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 684 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:18,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:18,813 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:18,821 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:18,873 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-03 09:06:18,873 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:18,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 684 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:19,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:19,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:06:19,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:06:19,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:06:19,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:19,079 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 40 states. [2018-10-03 09:06:20,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:20,529 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2018-10-03 09:06:20,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:06:20,529 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 97 [2018-10-03 09:06:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:20,530 INFO L225 Difference]: With dead ends: 184 [2018-10-03 09:06:20,530 INFO L226 Difference]: Without dead ends: 101 [2018-10-03 09:06:20,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 39 [2018-10-03 09:06:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-03 09:06:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-03 09:06:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-03 09:06:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-10-03 09:06:20,541 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 97 [2018-10-03 09:06:20,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:20,541 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-10-03 09:06:20,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:06:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-10-03 09:06:20,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:06:20,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:20,542 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1, 1] [2018-10-03 09:06:20,542 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:20,543 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:20,543 INFO L82 PathProgramCache]: Analyzing trace with hash -209035110, now seen corresponding path program 36 times [2018-10-03 09:06:20,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:20,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:20,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:20,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:20,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 226 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:20,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:20,784 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:20,791 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:20,850 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 09:06:20,850 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:20,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 226 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:21,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:21,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:06:21,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:06:21,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:06:21,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:21,079 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 22 states. [2018-10-03 09:06:21,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:21,260 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2018-10-03 09:06:21,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:06:21,261 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2018-10-03 09:06:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:21,262 INFO L225 Difference]: With dead ends: 115 [2018-10-03 09:06:21,262 INFO L226 Difference]: Without dead ends: 109 [2018-10-03 09:06:21,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 20 [2018-10-03 09:06:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-03 09:06:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2018-10-03 09:06:21,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-03 09:06:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-10-03 09:06:21,271 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 98 [2018-10-03 09:06:21,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:21,271 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-10-03 09:06:21,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:06:21,271 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-10-03 09:06:21,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-03 09:06:21,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:21,272 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 1, 1, 1, 1, 1] [2018-10-03 09:06:21,272 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:21,273 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:21,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1566476528, now seen corresponding path program 37 times [2018-10-03 09:06:21,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:21,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:21,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:21,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:21,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 760 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:23,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:23,474 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:23,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:23,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 760 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:23,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:23,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:06:23,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:06:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:06:23,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:23,724 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 42 states. [2018-10-03 09:06:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:24,692 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-10-03 09:06:24,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:06:24,693 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 102 [2018-10-03 09:06:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:24,693 INFO L225 Difference]: With dead ends: 193 [2018-10-03 09:06:24,693 INFO L226 Difference]: Without dead ends: 106 [2018-10-03 09:06:24,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.9s impTime 41 [2018-10-03 09:06:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-03 09:06:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-03 09:06:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-03 09:06:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2018-10-03 09:06:24,703 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 102 [2018-10-03 09:06:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:24,703 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2018-10-03 09:06:24,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:06:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2018-10-03 09:06:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-03 09:06:24,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:24,704 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1, 1] [2018-10-03 09:06:24,705 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:24,705 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1920546761, now seen corresponding path program 38 times [2018-10-03 09:06:24,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:24,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:24,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:24,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:24,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 248 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:25,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:25,103 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:25,111 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:25,159 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:25,160 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:25,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 248 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:25,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:25,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-03 09:06:25,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 09:06:25,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 09:06:25,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:25,399 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 23 states. [2018-10-03 09:06:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:25,529 INFO L93 Difference]: Finished difference Result 120 states and 123 transitions. [2018-10-03 09:06:25,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:06:25,529 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 103 [2018-10-03 09:06:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:25,530 INFO L225 Difference]: With dead ends: 120 [2018-10-03 09:06:25,531 INFO L226 Difference]: Without dead ends: 114 [2018-10-03 09:06:25,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 21 [2018-10-03 09:06:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-03 09:06:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2018-10-03 09:06:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-03 09:06:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2018-10-03 09:06:25,543 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 103 [2018-10-03 09:06:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:25,543 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2018-10-03 09:06:25,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 09:06:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2018-10-03 09:06:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-03 09:06:25,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:25,544 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 1, 1, 1, 1, 1] [2018-10-03 09:06:25,545 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:25,545 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -756867393, now seen corresponding path program 39 times [2018-10-03 09:06:25,545 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:25,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:25,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:25,546 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:25,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 840 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:27,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:27,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:27,100 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:27,170 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-03 09:06:27,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:27,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 840 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:28,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:28,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:06:28,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:06:28,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:06:28,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:28,355 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 44 states. [2018-10-03 09:06:29,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:29,280 INFO L93 Difference]: Finished difference Result 202 states and 206 transitions. [2018-10-03 09:06:29,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:06:29,280 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 107 [2018-10-03 09:06:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:29,281 INFO L225 Difference]: With dead ends: 202 [2018-10-03 09:06:29,281 INFO L226 Difference]: Without dead ends: 111 [2018-10-03 09:06:29,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 1.5s impTime 43 [2018-10-03 09:06:29,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-03 09:06:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-03 09:06:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-03 09:06:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-10-03 09:06:29,293 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 107 [2018-10-03 09:06:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:29,293 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-10-03 09:06:29,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:06:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-10-03 09:06:29,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 09:06:29,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:29,294 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1, 1, 1, 1] [2018-10-03 09:06:29,295 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:29,295 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:29,295 INFO L82 PathProgramCache]: Analyzing trace with hash 798222758, now seen corresponding path program 40 times [2018-10-03 09:06:29,295 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:29,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:29,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:29,296 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:29,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 271 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:29,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:29,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:29,810 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:29,860 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:29,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:29,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 271 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:30,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:30,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:06:30,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:06:30,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:06:30,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:30,058 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 24 states. [2018-10-03 09:06:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:30,176 INFO L93 Difference]: Finished difference Result 125 states and 128 transitions. [2018-10-03 09:06:30,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:06:30,176 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 108 [2018-10-03 09:06:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:30,177 INFO L225 Difference]: With dead ends: 125 [2018-10-03 09:06:30,177 INFO L226 Difference]: Without dead ends: 119 [2018-10-03 09:06:30,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 22 [2018-10-03 09:06:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-03 09:06:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-10-03 09:06:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-03 09:06:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-10-03 09:06:30,189 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 108 [2018-10-03 09:06:30,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:30,190 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-10-03 09:06:30,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:06:30,190 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-10-03 09:06:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-03 09:06:30,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:30,191 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 1, 1, 1, 1, 1] [2018-10-03 09:06:30,191 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:30,191 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:30,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1030199836, now seen corresponding path program 41 times [2018-10-03 09:06:30,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:30,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:30,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:30,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:30,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 924 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:30,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:30,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:30,900 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:30,967 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-03 09:06:30,967 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:30,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 924 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:31,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:31,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:06:31,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:06:31,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:06:31,167 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:31,167 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 46 states. [2018-10-03 09:06:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:32,130 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-10-03 09:06:32,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:06:32,131 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 112 [2018-10-03 09:06:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:32,131 INFO L225 Difference]: With dead ends: 211 [2018-10-03 09:06:32,131 INFO L226 Difference]: Without dead ends: 116 [2018-10-03 09:06:32,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 45 [2018-10-03 09:06:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-03 09:06:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-03 09:06:32,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-03 09:06:32,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2018-10-03 09:06:32,144 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 112 [2018-10-03 09:06:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:32,144 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2018-10-03 09:06:32,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:06:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2018-10-03 09:06:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-03 09:06:32,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:32,147 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1, 1, 1, 1] [2018-10-03 09:06:32,147 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:32,147 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:32,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1949005931, now seen corresponding path program 42 times [2018-10-03 09:06:32,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:32,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:32,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:32,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:32,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 295 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:32,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:32,769 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:32,776 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:32,870 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-03 09:06:32,870 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:32,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 295 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:33,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:33,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-03 09:06:33,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-03 09:06:33,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-03 09:06:33,082 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:33,082 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 25 states. [2018-10-03 09:06:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:33,200 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2018-10-03 09:06:33,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:06:33,200 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 113 [2018-10-03 09:06:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:33,201 INFO L225 Difference]: With dead ends: 130 [2018-10-03 09:06:33,202 INFO L226 Difference]: Without dead ends: 124 [2018-10-03 09:06:33,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 23 [2018-10-03 09:06:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-03 09:06:33,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2018-10-03 09:06:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-03 09:06:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2018-10-03 09:06:33,214 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 113 [2018-10-03 09:06:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:33,214 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2018-10-03 09:06:33,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-03 09:06:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2018-10-03 09:06:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-03 09:06:33,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:33,215 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1] [2018-10-03 09:06:33,216 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:33,216 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:33,216 INFO L82 PathProgramCache]: Analyzing trace with hash 725198987, now seen corresponding path program 43 times [2018-10-03 09:06:33,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:33,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:33,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:33,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:33,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 1012 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:34,647 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:34,647 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:34,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:34,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 1012 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:34,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:34,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:06:34,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:06:34,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:06:34,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:34,925 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 48 states. [2018-10-03 09:06:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:35,982 INFO L93 Difference]: Finished difference Result 220 states and 224 transitions. [2018-10-03 09:06:35,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:06:35,982 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 117 [2018-10-03 09:06:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:35,983 INFO L225 Difference]: With dead ends: 220 [2018-10-03 09:06:35,983 INFO L226 Difference]: Without dead ends: 121 [2018-10-03 09:06:35,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime 47 [2018-10-03 09:06:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-03 09:06:35,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-03 09:06:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-03 09:06:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-10-03 09:06:35,995 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 117 [2018-10-03 09:06:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:35,995 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-10-03 09:06:35,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:06:35,995 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-10-03 09:06:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-03 09:06:35,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:35,996 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1] [2018-10-03 09:06:35,996 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:35,997 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:35,997 INFO L82 PathProgramCache]: Analyzing trace with hash 995311282, now seen corresponding path program 44 times [2018-10-03 09:06:35,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:35,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:35,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:35,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:35,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 320 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:37,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:37,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:37,193 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:37,244 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:37,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:37,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:37,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 320 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:37,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:37,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:06:37,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:06:37,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:06:37,634 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:37,635 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 26 states. [2018-10-03 09:06:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:37,767 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2018-10-03 09:06:37,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:06:37,767 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 118 [2018-10-03 09:06:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:37,768 INFO L225 Difference]: With dead ends: 135 [2018-10-03 09:06:37,768 INFO L226 Difference]: Without dead ends: 129 [2018-10-03 09:06:37,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.7s impTime 24 [2018-10-03 09:06:37,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-03 09:06:37,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2018-10-03 09:06:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-03 09:06:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-10-03 09:06:37,780 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 118 [2018-10-03 09:06:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:37,781 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-10-03 09:06:37,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:06:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-10-03 09:06:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-03 09:06:37,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:37,782 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 1, 1, 1, 1, 1] [2018-10-03 09:06:37,782 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:37,782 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:37,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1935656, now seen corresponding path program 45 times [2018-10-03 09:06:37,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:37,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:37,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:37,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:37,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 1104 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:40,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:40,172 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:40,180 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:40,257 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-03 09:06:40,258 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:40,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 1104 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:40,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:40,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:06:40,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:06:40,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:06:40,470 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:40,471 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 50 states. [2018-10-03 09:06:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:41,439 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-10-03 09:06:41,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:06:41,440 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 122 [2018-10-03 09:06:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:41,441 INFO L225 Difference]: With dead ends: 229 [2018-10-03 09:06:41,441 INFO L226 Difference]: Without dead ends: 126 [2018-10-03 09:06:41,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.1s impTime 49 [2018-10-03 09:06:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-03 09:06:41,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-03 09:06:41,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-03 09:06:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2018-10-03 09:06:41,452 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 122 [2018-10-03 09:06:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:41,452 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2018-10-03 09:06:41,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:06:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2018-10-03 09:06:41,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-03 09:06:41,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:41,453 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1, 1, 1, 1] [2018-10-03 09:06:41,454 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:41,454 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:41,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1360966497, now seen corresponding path program 46 times [2018-10-03 09:06:41,454 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:41,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:41,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:41,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:41,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 346 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:41,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:41,751 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:41,759 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:41,817 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:41,817 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:41,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 346 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:42,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:42,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-03 09:06:42,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-03 09:06:42,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-03 09:06:42,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:42,053 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 27 states. [2018-10-03 09:06:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:42,183 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2018-10-03 09:06:42,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:06:42,184 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 123 [2018-10-03 09:06:42,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:42,185 INFO L225 Difference]: With dead ends: 140 [2018-10-03 09:06:42,185 INFO L226 Difference]: Without dead ends: 134 [2018-10-03 09:06:42,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 25 [2018-10-03 09:06:42,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-03 09:06:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2018-10-03 09:06:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-03 09:06:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2018-10-03 09:06:42,196 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 123 [2018-10-03 09:06:42,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:42,196 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2018-10-03 09:06:42,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-03 09:06:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2018-10-03 09:06:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-03 09:06:42,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:42,197 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 1, 1, 1, 1, 1] [2018-10-03 09:06:42,197 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:42,197 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:42,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1531900329, now seen corresponding path program 47 times [2018-10-03 09:06:42,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:42,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:42,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:42,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:42,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 1200 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:43,686 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:43,686 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:43,696 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:43,830 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-03 09:06:43,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:43,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 1200 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:44,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:44,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:06:44,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:06:44,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:06:44,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:44,056 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 52 states. [2018-10-03 09:06:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:45,248 INFO L93 Difference]: Finished difference Result 238 states and 242 transitions. [2018-10-03 09:06:45,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:06:45,248 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 127 [2018-10-03 09:06:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:45,249 INFO L225 Difference]: With dead ends: 238 [2018-10-03 09:06:45,249 INFO L226 Difference]: Without dead ends: 131 [2018-10-03 09:06:45,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 51 [2018-10-03 09:06:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-03 09:06:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-03 09:06:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-03 09:06:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-10-03 09:06:45,262 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 127 [2018-10-03 09:06:45,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:45,262 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-10-03 09:06:45,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:06:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-10-03 09:06:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-03 09:06:45,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:45,263 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1, 1, 1, 1] [2018-10-03 09:06:45,263 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:45,263 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:45,264 INFO L82 PathProgramCache]: Analyzing trace with hash -652320834, now seen corresponding path program 48 times [2018-10-03 09:06:45,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:45,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:45,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:45,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:45,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 373 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:45,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:45,590 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:45,598 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:45,675 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 09:06:45,675 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:45,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 373 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:45,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:45,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:06:45,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:06:45,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:06:45,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:45,975 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 28 states. [2018-10-03 09:06:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:46,115 INFO L93 Difference]: Finished difference Result 145 states and 148 transitions. [2018-10-03 09:06:46,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:06:46,116 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 128 [2018-10-03 09:06:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:46,117 INFO L225 Difference]: With dead ends: 145 [2018-10-03 09:06:46,117 INFO L226 Difference]: Without dead ends: 139 [2018-10-03 09:06:46,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 26 [2018-10-03 09:06:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-03 09:06:46,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-10-03 09:06:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-03 09:06:46,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-10-03 09:06:46,127 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 128 [2018-10-03 09:06:46,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:46,128 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-10-03 09:06:46,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:06:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-10-03 09:06:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-03 09:06:46,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:46,128 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 1, 1, 1, 1, 1] [2018-10-03 09:06:46,128 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:46,129 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:46,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1843837900, now seen corresponding path program 49 times [2018-10-03 09:06:46,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:46,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:46,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:46,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:46,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 1300 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:47,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:47,158 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:47,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:47,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 1300 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:48,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:48,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:06:48,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:06:48,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:06:48,444 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:48,444 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 54 states. [2018-10-03 09:06:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:48,954 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-10-03 09:06:48,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:06:48,954 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 132 [2018-10-03 09:06:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:48,955 INFO L225 Difference]: With dead ends: 247 [2018-10-03 09:06:48,955 INFO L226 Difference]: Without dead ends: 136 [2018-10-03 09:06:48,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 0.9s impTime 53 [2018-10-03 09:06:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-03 09:06:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-03 09:06:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-03 09:06:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2018-10-03 09:06:48,966 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 132 [2018-10-03 09:06:48,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:48,966 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2018-10-03 09:06:48,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:06:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2018-10-03 09:06:48,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-03 09:06:48,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:48,967 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1, 1, 1, 1] [2018-10-03 09:06:48,967 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:48,967 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:48,967 INFO L82 PathProgramCache]: Analyzing trace with hash 35240749, now seen corresponding path program 50 times [2018-10-03 09:06:48,967 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:48,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:48,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:48,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:48,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 401 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:49,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:49,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:49,590 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:49,649 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:49,649 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:49,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 401 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:50,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:50,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-03 09:06:50,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-03 09:06:50,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-03 09:06:50,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:50,087 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 29 states. [2018-10-03 09:06:50,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:50,237 INFO L93 Difference]: Finished difference Result 150 states and 153 transitions. [2018-10-03 09:06:50,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:06:50,237 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 133 [2018-10-03 09:06:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:50,238 INFO L225 Difference]: With dead ends: 150 [2018-10-03 09:06:50,238 INFO L226 Difference]: Without dead ends: 144 [2018-10-03 09:06:50,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.3s impTime 27 [2018-10-03 09:06:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-03 09:06:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2018-10-03 09:06:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-03 09:06:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-10-03 09:06:50,249 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 133 [2018-10-03 09:06:50,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:50,249 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-10-03 09:06:50,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-03 09:06:50,250 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-10-03 09:06:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-03 09:06:50,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:50,250 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 1, 1, 1, 1, 1] [2018-10-03 09:06:50,250 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:50,250 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:50,251 INFO L82 PathProgramCache]: Analyzing trace with hash -838119389, now seen corresponding path program 51 times [2018-10-03 09:06:50,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:50,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:50,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:50,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:50,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:51,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1404 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:51,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:51,098 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:51,105 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:51,193 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-03 09:06:51,193 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:51,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1404 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:51,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:51,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:06:51,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:06:51,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:06:51,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:51,468 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 56 states. [2018-10-03 09:06:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:52,904 INFO L93 Difference]: Finished difference Result 256 states and 260 transitions. [2018-10-03 09:06:52,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:06:52,904 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 137 [2018-10-03 09:06:52,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:52,905 INFO L225 Difference]: With dead ends: 256 [2018-10-03 09:06:52,905 INFO L226 Difference]: Without dead ends: 141 [2018-10-03 09:06:52,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 55 [2018-10-03 09:06:52,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-03 09:06:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-03 09:06:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-03 09:06:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-10-03 09:06:52,916 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 137 [2018-10-03 09:06:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:52,916 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-10-03 09:06:52,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:06:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-10-03 09:06:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-03 09:06:52,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:52,917 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1, 1, 1, 1] [2018-10-03 09:06:52,917 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:52,917 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1657490634, now seen corresponding path program 52 times [2018-10-03 09:06:52,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:52,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:52,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:52,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:52,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 430 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:53,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:53,429 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:53,437 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:53,492 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:53,492 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:53,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 430 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:53,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:53,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:06:53,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:06:53,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:06:53,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:53,899 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 30 states. [2018-10-03 09:06:54,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:54,048 INFO L93 Difference]: Finished difference Result 155 states and 158 transitions. [2018-10-03 09:06:54,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:06:54,049 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 138 [2018-10-03 09:06:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:54,049 INFO L225 Difference]: With dead ends: 155 [2018-10-03 09:06:54,049 INFO L226 Difference]: Without dead ends: 149 [2018-10-03 09:06:54,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.2s impTime 28 [2018-10-03 09:06:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-03 09:06:54,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2018-10-03 09:06:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-03 09:06:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-10-03 09:06:54,061 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 138 [2018-10-03 09:06:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:54,062 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-10-03 09:06:54,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:06:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-10-03 09:06:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-03 09:06:54,062 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:54,062 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 1, 1, 1, 1, 1] [2018-10-03 09:06:54,063 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:54,063 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:54,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1915800384, now seen corresponding path program 53 times [2018-10-03 09:06:54,063 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:54,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:54,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:54,064 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:54,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1512 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:54,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:54,969 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:54,976 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:55,059 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-03 09:06:55,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:55,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1512 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:55,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:55,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:06:55,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:06:55,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:06:55,437 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:55,437 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 58 states. [2018-10-03 09:06:56,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:56,941 INFO L93 Difference]: Finished difference Result 265 states and 269 transitions. [2018-10-03 09:06:56,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:06:56,941 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 142 [2018-10-03 09:06:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:56,942 INFO L225 Difference]: With dead ends: 265 [2018-10-03 09:06:56,942 INFO L226 Difference]: Without dead ends: 146 [2018-10-03 09:06:56,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 57 [2018-10-03 09:06:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-03 09:06:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-03 09:06:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-03 09:06:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2018-10-03 09:06:56,955 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 142 [2018-10-03 09:06:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:56,956 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2018-10-03 09:06:56,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:06:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2018-10-03 09:06:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-03 09:06:56,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:56,957 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1, 1, 1, 1] [2018-10-03 09:06:56,957 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:56,957 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:56,957 INFO L82 PathProgramCache]: Analyzing trace with hash 520593145, now seen corresponding path program 54 times [2018-10-03 09:06:56,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:56,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:56,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:56,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:56,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 460 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:57,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:57,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:57,266 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:57,360 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-03 09:06:57,361 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:57,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 460 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:57,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:57,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-03 09:06:57,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-03 09:06:57,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-03 09:06:57,729 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:57,729 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 31 states. [2018-10-03 09:06:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:57,887 INFO L93 Difference]: Finished difference Result 160 states and 163 transitions. [2018-10-03 09:06:57,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:06:57,887 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 143 [2018-10-03 09:06:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:57,888 INFO L225 Difference]: With dead ends: 160 [2018-10-03 09:06:57,888 INFO L226 Difference]: Without dead ends: 154 [2018-10-03 09:06:57,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 29 [2018-10-03 09:06:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-03 09:06:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2018-10-03 09:06:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-03 09:06:57,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2018-10-03 09:06:57,902 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 143 [2018-10-03 09:06:57,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:57,902 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2018-10-03 09:06:57,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-03 09:06:57,902 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2018-10-03 09:06:57,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-03 09:06:57,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:57,903 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 1, 1, 1, 1, 1] [2018-10-03 09:06:57,903 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:57,903 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:57,903 INFO L82 PathProgramCache]: Analyzing trace with hash 915041775, now seen corresponding path program 55 times [2018-10-03 09:06:57,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:57,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:57,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:57,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:57,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 1624 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:59,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:59,133 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:59,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:59,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 1624 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:59,800 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:59,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-03 09:06:59,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:06:59,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:06:59,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:59,801 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 60 states. [2018-10-03 09:07:01,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:01,453 INFO L93 Difference]: Finished difference Result 274 states and 278 transitions. [2018-10-03 09:07:01,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:07:01,453 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 147 [2018-10-03 09:07:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:01,454 INFO L225 Difference]: With dead ends: 274 [2018-10-03 09:07:01,454 INFO L226 Difference]: Without dead ends: 151 [2018-10-03 09:07:01,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.5s impTime 59 [2018-10-03 09:07:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-03 09:07:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-03 09:07:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-03 09:07:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-03 09:07:01,471 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 147 [2018-10-03 09:07:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:01,471 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-03 09:07:01,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:07:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-03 09:07:01,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-03 09:07:01,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:01,472 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1, 1, 1, 1] [2018-10-03 09:07:01,472 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:01,472 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1773143510, now seen corresponding path program 56 times [2018-10-03 09:07:01,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:01,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:01,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:01,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:01,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 491 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:01,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:01,783 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:01,791 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:01,859 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:01,859 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:01,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 491 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:02,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:02,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:07:02,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:07:02,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:07:02,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:02,114 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 32 states. [2018-10-03 09:07:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:02,304 INFO L93 Difference]: Finished difference Result 165 states and 168 transitions. [2018-10-03 09:07:02,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:07:02,304 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 148 [2018-10-03 09:07:02,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:02,305 INFO L225 Difference]: With dead ends: 165 [2018-10-03 09:07:02,305 INFO L226 Difference]: Without dead ends: 159 [2018-10-03 09:07:02,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 30 [2018-10-03 09:07:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-03 09:07:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-10-03 09:07:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-03 09:07:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-10-03 09:07:02,318 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 148 [2018-10-03 09:07:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:02,318 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-10-03 09:07:02,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:07:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-10-03 09:07:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-03 09:07:02,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:02,319 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 1, 1, 1, 1, 1] [2018-10-03 09:07:02,319 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:02,319 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:02,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1766187444, now seen corresponding path program 57 times [2018-10-03 09:07:02,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:02,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:02,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:02,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:02,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1740 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:03,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:03,605 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:03,612 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:03,718 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-03 09:07:03,718 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:03,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1740 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:04,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:04,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-03 09:07:04,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:07:04,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:07:04,066 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:04,066 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 62 states. [2018-10-03 09:07:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:05,797 INFO L93 Difference]: Finished difference Result 283 states and 287 transitions. [2018-10-03 09:07:05,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:07:05,798 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 152 [2018-10-03 09:07:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:05,798 INFO L225 Difference]: With dead ends: 283 [2018-10-03 09:07:05,798 INFO L226 Difference]: Without dead ends: 156 [2018-10-03 09:07:05,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime 61 [2018-10-03 09:07:05,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-03 09:07:05,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-03 09:07:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-03 09:07:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2018-10-03 09:07:05,811 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 152 [2018-10-03 09:07:05,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:05,811 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2018-10-03 09:07:05,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:07:05,812 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2018-10-03 09:07:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-03 09:07:05,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:05,812 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1, 1, 1, 1] [2018-10-03 09:07:05,812 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:05,813 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:05,813 INFO L82 PathProgramCache]: Analyzing trace with hash -928358715, now seen corresponding path program 58 times [2018-10-03 09:07:05,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:05,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:05,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:05,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:05,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 523 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:06,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:06,109 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:06,119 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:06,189 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:06,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:06,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 523 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:06,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:06,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-03 09:07:06,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-03 09:07:06,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-03 09:07:06,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:06,558 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 33 states. [2018-10-03 09:07:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:06,794 INFO L93 Difference]: Finished difference Result 170 states and 173 transitions. [2018-10-03 09:07:06,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:07:06,794 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 153 [2018-10-03 09:07:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:06,795 INFO L225 Difference]: With dead ends: 170 [2018-10-03 09:07:06,795 INFO L226 Difference]: Without dead ends: 164 [2018-10-03 09:07:06,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 31 [2018-10-03 09:07:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-03 09:07:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2018-10-03 09:07:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-03 09:07:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions. [2018-10-03 09:07:06,813 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 153 [2018-10-03 09:07:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:06,813 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions. [2018-10-03 09:07:06,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-03 09:07:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions. [2018-10-03 09:07:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-03 09:07:06,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:06,815 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 1, 1, 1, 1, 1] [2018-10-03 09:07:06,815 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:06,815 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash -839882821, now seen corresponding path program 59 times [2018-10-03 09:07:06,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:06,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:06,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:06,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:06,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 1860 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:07,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:07,619 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:07,627 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:07,729 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-03 09:07:07,729 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:07,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 1860 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:07,992 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:07,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-03 09:07:07,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:07:07,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:07:07,994 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:07,994 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand 64 states. [2018-10-03 09:07:09,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:09,423 INFO L93 Difference]: Finished difference Result 292 states and 296 transitions. [2018-10-03 09:07:09,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:07:09,423 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 157 [2018-10-03 09:07:09,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:09,424 INFO L225 Difference]: With dead ends: 292 [2018-10-03 09:07:09,424 INFO L226 Difference]: Without dead ends: 161 [2018-10-03 09:07:09,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 63 [2018-10-03 09:07:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-03 09:07:09,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-03 09:07:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-03 09:07:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-10-03 09:07:09,443 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 157 [2018-10-03 09:07:09,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:09,443 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-10-03 09:07:09,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:07:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-10-03 09:07:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-03 09:07:09,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:09,444 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1, 1] [2018-10-03 09:07:09,444 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:09,444 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:09,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1453492962, now seen corresponding path program 60 times [2018-10-03 09:07:09,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:09,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:09,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:09,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:09,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 556 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:09,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:09,834 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-03 09:07:09,852 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:10,011 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 09:07:10,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:10,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 556 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:10,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:10,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:07:10,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:07:10,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:07:10,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:10,280 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 34 states. [2018-10-03 09:07:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:10,455 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2018-10-03 09:07:10,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:07:10,456 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 158 [2018-10-03 09:07:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:10,457 INFO L225 Difference]: With dead ends: 175 [2018-10-03 09:07:10,457 INFO L226 Difference]: Without dead ends: 169 [2018-10-03 09:07:10,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 32 [2018-10-03 09:07:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-03 09:07:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2018-10-03 09:07:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-03 09:07:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-10-03 09:07:10,474 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 158 [2018-10-03 09:07:10,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:10,474 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-10-03 09:07:10,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:07:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-10-03 09:07:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-03 09:07:10,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:10,476 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 1, 1, 1, 1, 1] [2018-10-03 09:07:10,476 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:10,476 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:10,476 INFO L82 PathProgramCache]: Analyzing trace with hash 227229016, now seen corresponding path program 61 times [2018-10-03 09:07:10,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:10,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:10,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:10,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:10,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2480 backedges. 1984 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:11,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:11,582 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:11,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:11,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2480 backedges. 1984 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:11,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:11,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-03 09:07:11,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:07:11,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:07:11,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:11,945 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 66 states. [2018-10-03 09:07:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:13,810 INFO L93 Difference]: Finished difference Result 301 states and 305 transitions. [2018-10-03 09:07:13,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:07:13,810 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 162 [2018-10-03 09:07:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:13,811 INFO L225 Difference]: With dead ends: 301 [2018-10-03 09:07:13,811 INFO L226 Difference]: Without dead ends: 166 [2018-10-03 09:07:13,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 65 [2018-10-03 09:07:13,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-03 09:07:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-03 09:07:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-03 09:07:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2018-10-03 09:07:13,830 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 162 [2018-10-03 09:07:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:13,831 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2018-10-03 09:07:13,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:07:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2018-10-03 09:07:13,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-03 09:07:13,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:13,832 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 1, 1, 1, 1, 1] [2018-10-03 09:07:13,832 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:13,832 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:13,832 INFO L82 PathProgramCache]: Analyzing trace with hash 541325969, now seen corresponding path program 62 times [2018-10-03 09:07:13,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:13,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:13,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:13,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:13,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 590 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:14,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:14,264 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:14,274 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:14,341 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:14,341 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:14,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 590 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:14,625 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:14,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-03 09:07:14,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-03 09:07:14,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-03 09:07:14,626 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:14,626 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 35 states. [2018-10-03 09:07:14,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:14,863 INFO L93 Difference]: Finished difference Result 180 states and 183 transitions. [2018-10-03 09:07:14,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:07:14,864 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 163 [2018-10-03 09:07:14,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:14,868 INFO L225 Difference]: With dead ends: 180 [2018-10-03 09:07:14,868 INFO L226 Difference]: Without dead ends: 174 [2018-10-03 09:07:14,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 33 [2018-10-03 09:07:14,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-03 09:07:14,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2018-10-03 09:07:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-03 09:07:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions. [2018-10-03 09:07:14,884 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 163 [2018-10-03 09:07:14,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:14,884 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 172 transitions. [2018-10-03 09:07:14,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-03 09:07:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 172 transitions. [2018-10-03 09:07:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-03 09:07:14,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:14,886 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 1, 1, 1, 1, 1] [2018-10-03 09:07:14,886 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:14,886 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:14,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1149189511, now seen corresponding path program 63 times [2018-10-03 09:07:14,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:14,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:14,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:14,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:14,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 2112 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:15,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:15,819 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:15,828 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:15,940 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-03 09:07:15,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:15,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 2112 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:16,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:16,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-03 09:07:16,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:07:16,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:07:16,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:16,299 INFO L87 Difference]: Start difference. First operand 170 states and 172 transitions. Second operand 68 states. [2018-10-03 09:07:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:17,055 INFO L93 Difference]: Finished difference Result 310 states and 314 transitions. [2018-10-03 09:07:17,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:07:17,056 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 167 [2018-10-03 09:07:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:17,056 INFO L225 Difference]: With dead ends: 310 [2018-10-03 09:07:17,057 INFO L226 Difference]: Without dead ends: 171 [2018-10-03 09:07:17,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 67 [2018-10-03 09:07:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-03 09:07:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-03 09:07:17,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-03 09:07:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-10-03 09:07:17,072 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 167 [2018-10-03 09:07:17,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:17,072 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-10-03 09:07:17,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:07:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-10-03 09:07:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-03 09:07:17,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:17,073 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 1, 1, 1, 1, 1] [2018-10-03 09:07:17,073 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:17,073 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:17,073 INFO L82 PathProgramCache]: Analyzing trace with hash 167304174, now seen corresponding path program 64 times [2018-10-03 09:07:17,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:17,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:17,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:17,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:17,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 625 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:17,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:17,501 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:17,510 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:17,585 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:17,586 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:17,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 625 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:17,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:17,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:07:17,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:07:17,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:07:17,998 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:17,999 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 36 states. [2018-10-03 09:07:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:18,205 INFO L93 Difference]: Finished difference Result 185 states and 188 transitions. [2018-10-03 09:07:18,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:07:18,206 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 168 [2018-10-03 09:07:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:18,207 INFO L225 Difference]: With dead ends: 185 [2018-10-03 09:07:18,208 INFO L226 Difference]: Without dead ends: 179 [2018-10-03 09:07:18,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 34 [2018-10-03 09:07:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-03 09:07:18,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-10-03 09:07:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-03 09:07:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-10-03 09:07:18,229 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 168 [2018-10-03 09:07:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:18,229 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-10-03 09:07:18,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:07:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-10-03 09:07:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-03 09:07:18,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:18,230 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 1, 1, 1, 1, 1] [2018-10-03 09:07:18,230 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:18,231 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:18,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1678104476, now seen corresponding path program 65 times [2018-10-03 09:07:18,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:18,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:18,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:18,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:18,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 2244 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:19,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:19,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:19,622 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:19,724 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-03 09:07:19,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:19,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 2244 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:20,250 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:20,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-03 09:07:20,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:07:20,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:07:20,251 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:20,251 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 70 states. [2018-10-03 09:07:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:22,435 INFO L93 Difference]: Finished difference Result 319 states and 323 transitions. [2018-10-03 09:07:22,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:07:22,435 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 172 [2018-10-03 09:07:22,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:22,436 INFO L225 Difference]: With dead ends: 319 [2018-10-03 09:07:22,436 INFO L226 Difference]: Without dead ends: 176 [2018-10-03 09:07:22,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.8s impTime 69 [2018-10-03 09:07:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-03 09:07:22,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-03 09:07:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-03 09:07:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2018-10-03 09:07:22,458 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 172 [2018-10-03 09:07:22,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:22,458 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2018-10-03 09:07:22,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:07:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2018-10-03 09:07:22,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-03 09:07:22,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:22,459 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 1, 1, 1, 1, 1] [2018-10-03 09:07:22,459 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:22,459 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:22,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1483312547, now seen corresponding path program 66 times [2018-10-03 09:07:22,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:22,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:22,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:22,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:22,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 661 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:22,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:22,893 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:22,899 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:23,015 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-03 09:07:23,016 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:23,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 661 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:23,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:23,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-03 09:07:23,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-03 09:07:23,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-03 09:07:23,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:23,311 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand 37 states. [2018-10-03 09:07:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:23,504 INFO L93 Difference]: Finished difference Result 190 states and 193 transitions. [2018-10-03 09:07:23,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:07:23,504 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 173 [2018-10-03 09:07:23,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:23,505 INFO L225 Difference]: With dead ends: 190 [2018-10-03 09:07:23,505 INFO L226 Difference]: Without dead ends: 184 [2018-10-03 09:07:23,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 35 [2018-10-03 09:07:23,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-03 09:07:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2018-10-03 09:07:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-03 09:07:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2018-10-03 09:07:23,525 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 173 [2018-10-03 09:07:23,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:23,525 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2018-10-03 09:07:23,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-03 09:07:23,525 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2018-10-03 09:07:23,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-03 09:07:23,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:23,526 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 1, 1, 1, 1, 1] [2018-10-03 09:07:23,526 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:23,527 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:23,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1794699091, now seen corresponding path program 67 times [2018-10-03 09:07:23,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:23,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:23,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:23,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:23,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 2380 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:25,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:25,026 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:25,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:25,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 2380 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:25,410 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:25,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-03 09:07:25,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:07:25,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:07:25,411 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:25,411 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand 72 states. [2018-10-03 09:07:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:27,778 INFO L93 Difference]: Finished difference Result 328 states and 332 transitions. [2018-10-03 09:07:27,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:07:27,778 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 177 [2018-10-03 09:07:27,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:27,779 INFO L225 Difference]: With dead ends: 328 [2018-10-03 09:07:27,779 INFO L226 Difference]: Without dead ends: 181 [2018-10-03 09:07:27,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime 71 [2018-10-03 09:07:27,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-03 09:07:27,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-03 09:07:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-03 09:07:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-10-03 09:07:27,796 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 177 [2018-10-03 09:07:27,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:27,796 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-10-03 09:07:27,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:07:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-10-03 09:07:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-03 09:07:27,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:27,797 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 1, 1, 1, 1, 1] [2018-10-03 09:07:27,797 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:27,797 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash 2072574202, now seen corresponding path program 68 times [2018-10-03 09:07:27,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:27,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:27,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:27,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:27,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 698 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:28,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:28,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:28,287 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:28,395 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:28,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:28,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 698 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:28,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:28,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:07:28,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:07:28,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:07:28,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:28,746 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 38 states. [2018-10-03 09:07:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:29,011 INFO L93 Difference]: Finished difference Result 195 states and 198 transitions. [2018-10-03 09:07:29,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:07:29,011 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 178 [2018-10-03 09:07:29,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:29,012 INFO L225 Difference]: With dead ends: 195 [2018-10-03 09:07:29,013 INFO L226 Difference]: Without dead ends: 189 [2018-10-03 09:07:29,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 36 [2018-10-03 09:07:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-03 09:07:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2018-10-03 09:07:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-03 09:07:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-10-03 09:07:29,028 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 178 [2018-10-03 09:07:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:29,028 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-10-03 09:07:29,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:07:29,029 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-10-03 09:07:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-03 09:07:29,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:29,030 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 1, 1, 1, 1, 1] [2018-10-03 09:07:29,030 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:29,030 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:29,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1591533424, now seen corresponding path program 69 times [2018-10-03 09:07:29,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:29,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:29,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:29,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:29,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 2520 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:30,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:30,533 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:30,540 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:30,678 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-03 09:07:30,678 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:30,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 2520 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:30,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:31,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-03 09:07:31,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:07:31,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:07:31,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:31,001 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 74 states. [2018-10-03 09:07:33,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:33,573 INFO L93 Difference]: Finished difference Result 337 states and 341 transitions. [2018-10-03 09:07:33,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:07:33,573 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 182 [2018-10-03 09:07:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:33,574 INFO L225 Difference]: With dead ends: 337 [2018-10-03 09:07:33,574 INFO L226 Difference]: Without dead ends: 186 [2018-10-03 09:07:33,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.1s impTime 73 [2018-10-03 09:07:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-03 09:07:33,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-03 09:07:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-03 09:07:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2018-10-03 09:07:33,591 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 182 [2018-10-03 09:07:33,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:33,591 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2018-10-03 09:07:33,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:07:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2018-10-03 09:07:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-03 09:07:33,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:33,592 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 1, 1, 1, 1, 1] [2018-10-03 09:07:33,593 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:33,593 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:33,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1595685335, now seen corresponding path program 70 times [2018-10-03 09:07:33,593 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:33,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:33,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:33,594 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:33,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 736 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:34,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:34,271 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:34,296 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:34,384 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:34,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:34,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 736 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:34,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:34,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-03 09:07:34,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-03 09:07:34,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-03 09:07:34,725 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:34,726 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand 39 states. [2018-10-03 09:07:34,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:34,957 INFO L93 Difference]: Finished difference Result 200 states and 203 transitions. [2018-10-03 09:07:34,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:07:34,957 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 183 [2018-10-03 09:07:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:34,958 INFO L225 Difference]: With dead ends: 200 [2018-10-03 09:07:34,958 INFO L226 Difference]: Without dead ends: 194 [2018-10-03 09:07:34,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.3s impTime 37 [2018-10-03 09:07:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-03 09:07:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 190. [2018-10-03 09:07:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-03 09:07:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2018-10-03 09:07:34,981 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 183 [2018-10-03 09:07:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:34,981 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2018-10-03 09:07:34,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-03 09:07:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2018-10-03 09:07:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-03 09:07:34,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:34,982 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 1, 1, 1, 1, 1] [2018-10-03 09:07:34,983 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:34,983 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:34,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1835041505, now seen corresponding path program 71 times [2018-10-03 09:07:34,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:34,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:34,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:34,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:34,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 2664 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:35,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:35,954 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:35,961 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:36,091 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-03 09:07:36,092 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:36,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 2664 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:36,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:36,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-03 09:07:36,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:07:36,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:07:36,426 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:36,426 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 76 states. [2018-10-03 09:07:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:38,245 INFO L93 Difference]: Finished difference Result 346 states and 350 transitions. [2018-10-03 09:07:38,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:07:38,245 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 187 [2018-10-03 09:07:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:38,246 INFO L225 Difference]: With dead ends: 346 [2018-10-03 09:07:38,246 INFO L226 Difference]: Without dead ends: 191 [2018-10-03 09:07:38,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 75 [2018-10-03 09:07:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-03 09:07:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-03 09:07:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-03 09:07:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-10-03 09:07:38,270 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 187 [2018-10-03 09:07:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:38,270 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-10-03 09:07:38,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:07:38,270 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-10-03 09:07:38,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-03 09:07:38,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:38,271 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 1, 1, 1, 1, 1] [2018-10-03 09:07:38,272 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:38,272 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:38,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1521017350, now seen corresponding path program 72 times [2018-10-03 09:07:38,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:38,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:38,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:38,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:38,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 775 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:38,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:38,648 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:38,655 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:38,782 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 09:07:38,782 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:38,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 775 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:39,416 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:39,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:07:39,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:07:39,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:07:39,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:39,417 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 40 states. [2018-10-03 09:07:39,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:39,655 INFO L93 Difference]: Finished difference Result 205 states and 208 transitions. [2018-10-03 09:07:39,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:07:39,656 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 188 [2018-10-03 09:07:39,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:39,657 INFO L225 Difference]: With dead ends: 205 [2018-10-03 09:07:39,657 INFO L226 Difference]: Without dead ends: 199 [2018-10-03 09:07:39,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.1s impTime 38 [2018-10-03 09:07:39,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-03 09:07:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-10-03 09:07:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-03 09:07:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-10-03 09:07:39,682 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 188 [2018-10-03 09:07:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:39,682 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-10-03 09:07:39,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:07:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-10-03 09:07:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-03 09:07:39,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:39,684 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 1, 1, 1, 1, 1] [2018-10-03 09:07:39,684 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:39,684 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:39,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1787388540, now seen corresponding path program 73 times [2018-10-03 09:07:39,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:39,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:39,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:39,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:39,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3515 backedges. 2812 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:40,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:40,769 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:40,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:40,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3515 backedges. 2812 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:41,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:41,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-03 09:07:41,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:07:41,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:07:41,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:41,211 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 78 states. [2018-10-03 09:07:42,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:42,958 INFO L93 Difference]: Finished difference Result 355 states and 359 transitions. [2018-10-03 09:07:42,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-03 09:07:42,959 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 192 [2018-10-03 09:07:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:42,960 INFO L225 Difference]: With dead ends: 355 [2018-10-03 09:07:42,960 INFO L226 Difference]: Without dead ends: 196 [2018-10-03 09:07:42,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 77 [2018-10-03 09:07:42,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-03 09:07:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-03 09:07:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-03 09:07:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2018-10-03 09:07:42,982 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 192 [2018-10-03 09:07:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:42,982 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2018-10-03 09:07:42,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:07:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2018-10-03 09:07:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-03 09:07:42,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:42,983 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 1, 1, 1, 1, 1] [2018-10-03 09:07:42,983 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:42,983 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:42,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1861088757, now seen corresponding path program 74 times [2018-10-03 09:07:42,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:42,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:42,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:42,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:42,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 815 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:43,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:43,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:43,397 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:43,489 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:43,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:43,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 815 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:43,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:43,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-03 09:07:43,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-03 09:07:43,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-03 09:07:43,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:43,831 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand 41 states. [2018-10-03 09:07:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:44,107 INFO L93 Difference]: Finished difference Result 210 states and 213 transitions. [2018-10-03 09:07:44,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:07:44,107 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 193 [2018-10-03 09:07:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:44,108 INFO L225 Difference]: With dead ends: 210 [2018-10-03 09:07:44,108 INFO L226 Difference]: Without dead ends: 204 [2018-10-03 09:07:44,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 39 [2018-10-03 09:07:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-03 09:07:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2018-10-03 09:07:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-03 09:07:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2018-10-03 09:07:44,142 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 193 [2018-10-03 09:07:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:44,142 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2018-10-03 09:07:44,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-03 09:07:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2018-10-03 09:07:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-03 09:07:44,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:44,143 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 1, 1, 1, 1, 1] [2018-10-03 09:07:44,143 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:44,143 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash -315300117, now seen corresponding path program 75 times [2018-10-03 09:07:44,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:44,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:44,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:44,145 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:44,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 2964 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:45,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:45,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:45,242 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:45,425 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-03 09:07:45,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:45,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 2964 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:45,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:45,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-03 09:07:45,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:07:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:07:45,773 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:45,773 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand 80 states. [2018-10-03 09:07:47,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:47,731 INFO L93 Difference]: Finished difference Result 364 states and 368 transitions. [2018-10-03 09:07:47,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-03 09:07:47,732 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 197 [2018-10-03 09:07:47,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:47,733 INFO L225 Difference]: With dead ends: 364 [2018-10-03 09:07:47,733 INFO L226 Difference]: Without dead ends: 201 [2018-10-03 09:07:47,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 79 [2018-10-03 09:07:47,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-03 09:07:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-03 09:07:47,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-03 09:07:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-10-03 09:07:47,758 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 197 [2018-10-03 09:07:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:47,759 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-10-03 09:07:47,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:07:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-10-03 09:07:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-03 09:07:47,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:47,760 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 1, 1, 1, 1, 1] [2018-10-03 09:07:47,760 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:47,760 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:47,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1372678382, now seen corresponding path program 76 times [2018-10-03 09:07:47,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:47,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:47,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:47,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:47,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 856 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:48,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:48,098 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:48,107 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:48,202 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:48,202 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:48,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 856 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:48,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:48,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:07:48,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:07:48,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:07:48,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:48,557 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 42 states. [2018-10-03 09:07:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:48,862 INFO L93 Difference]: Finished difference Result 215 states and 218 transitions. [2018-10-03 09:07:48,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:07:48,869 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 198 [2018-10-03 09:07:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:48,870 INFO L225 Difference]: With dead ends: 215 [2018-10-03 09:07:48,870 INFO L226 Difference]: Without dead ends: 209 [2018-10-03 09:07:48,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 40 [2018-10-03 09:07:48,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-03 09:07:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2018-10-03 09:07:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-03 09:07:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-03 09:07:48,915 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 198 [2018-10-03 09:07:48,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:48,915 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-03 09:07:48,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:07:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-03 09:07:48,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-03 09:07:48,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:48,916 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 1, 1, 1, 1, 1] [2018-10-03 09:07:48,917 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:48,917 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:48,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1792389512, now seen corresponding path program 77 times [2018-10-03 09:07:48,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:48,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:48,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:48,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:48,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 3120 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:50,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:50,211 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:50,218 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:50,353 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-03 09:07:50,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:50,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 3120 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:50,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:50,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-03 09:07:50,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:07:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:07:50,706 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:50,706 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 82 states. [2018-10-03 09:07:52,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:52,820 INFO L93 Difference]: Finished difference Result 373 states and 377 transitions. [2018-10-03 09:07:52,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-03 09:07:52,820 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 202 [2018-10-03 09:07:52,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:52,821 INFO L225 Difference]: With dead ends: 373 [2018-10-03 09:07:52,821 INFO L226 Difference]: Without dead ends: 206 [2018-10-03 09:07:52,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime 81 [2018-10-03 09:07:52,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-03 09:07:52,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-03 09:07:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-03 09:07:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 208 transitions. [2018-10-03 09:07:52,845 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 208 transitions. Word has length 202 [2018-10-03 09:07:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:52,845 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 208 transitions. [2018-10-03 09:07:52,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:07:52,845 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 208 transitions. [2018-10-03 09:07:52,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-03 09:07:52,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:52,847 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 1, 1, 1, 1, 1] [2018-10-03 09:07:52,847 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:52,847 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:52,847 INFO L82 PathProgramCache]: Analyzing trace with hash -185138751, now seen corresponding path program 78 times [2018-10-03 09:07:52,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:52,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:52,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:52,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:52,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 898 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:53,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:53,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:53,237 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:53,373 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-03 09:07:53,374 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:53,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 898 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:53,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:53,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-03 09:07:53,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-03 09:07:53,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-03 09:07:53,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:53,737 INFO L87 Difference]: Start difference. First operand 206 states and 208 transitions. Second operand 43 states. [2018-10-03 09:07:54,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:54,018 INFO L93 Difference]: Finished difference Result 220 states and 223 transitions. [2018-10-03 09:07:54,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:07:54,023 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 203 [2018-10-03 09:07:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:54,024 INFO L225 Difference]: With dead ends: 220 [2018-10-03 09:07:54,024 INFO L226 Difference]: Without dead ends: 214 [2018-10-03 09:07:54,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 41 [2018-10-03 09:07:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-03 09:07:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2018-10-03 09:07:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-03 09:07:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 212 transitions. [2018-10-03 09:07:54,051 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 212 transitions. Word has length 203 [2018-10-03 09:07:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:54,051 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 212 transitions. [2018-10-03 09:07:54,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-03 09:07:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 212 transitions. [2018-10-03 09:07:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-03 09:07:54,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:54,052 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 1, 1, 1, 1, 1] [2018-10-03 09:07:54,052 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:54,052 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash -319083337, now seen corresponding path program 79 times [2018-10-03 09:07:54,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:54,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:54,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:54,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:54,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4100 backedges. 3280 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:55,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:55,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:55,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:55,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4100 backedges. 3280 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:55,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:55,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-03 09:07:55,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:07:55,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:07:55,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:55,922 INFO L87 Difference]: Start difference. First operand 210 states and 212 transitions. Second operand 84 states. [2018-10-03 09:07:57,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:57,991 INFO L93 Difference]: Finished difference Result 382 states and 386 transitions. [2018-10-03 09:07:57,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-03 09:07:57,991 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 207 [2018-10-03 09:07:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:57,992 INFO L225 Difference]: With dead ends: 382 [2018-10-03 09:07:57,992 INFO L226 Difference]: Without dead ends: 211 [2018-10-03 09:07:57,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 83 [2018-10-03 09:07:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-03 09:07:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-03 09:07:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-03 09:07:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-10-03 09:07:58,012 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 207 [2018-10-03 09:07:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:58,012 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-10-03 09:07:58,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:07:58,012 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-10-03 09:07:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-03 09:07:58,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:58,013 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 1, 1, 1, 1, 1] [2018-10-03 09:07:58,013 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:58,013 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:58,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1953503262, now seen corresponding path program 80 times [2018-10-03 09:07:58,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:58,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:58,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:58,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:58,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 941 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:58,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:58,486 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:58,493 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:58,588 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:58,589 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:58,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 941 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:58,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:58,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:07:58,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:07:58,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:07:58,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:58,959 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 44 states. [2018-10-03 09:07:59,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:59,231 INFO L93 Difference]: Finished difference Result 225 states and 228 transitions. [2018-10-03 09:07:59,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:07:59,231 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 208 [2018-10-03 09:07:59,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:59,232 INFO L225 Difference]: With dead ends: 225 [2018-10-03 09:07:59,232 INFO L226 Difference]: Without dead ends: 219 [2018-10-03 09:07:59,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 42 [2018-10-03 09:07:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-03 09:07:59,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-10-03 09:07:59,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-03 09:07:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-10-03 09:07:59,253 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 208 [2018-10-03 09:07:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:59,253 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-10-03 09:07:59,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:07:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-10-03 09:07:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-03 09:07:59,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:59,254 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 1, 1, 1, 1, 1] [2018-10-03 09:07:59,255 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:59,255 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:59,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1125633172, now seen corresponding path program 81 times [2018-10-03 09:07:59,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:59,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:59,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:59,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:59,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 3444 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:00,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:00,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:00,388 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:00,560 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-03 09:08:00,560 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:00,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 3444 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:00,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:00,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-03 09:08:00,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:08:00,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:08:00,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:00,935 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 86 states. [2018-10-03 09:08:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:02,329 INFO L93 Difference]: Finished difference Result 391 states and 395 transitions. [2018-10-03 09:08:02,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-03 09:08:02,329 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 212 [2018-10-03 09:08:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:02,330 INFO L225 Difference]: With dead ends: 391 [2018-10-03 09:08:02,330 INFO L226 Difference]: Without dead ends: 216 [2018-10-03 09:08:02,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 85 [2018-10-03 09:08:02,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-03 09:08:02,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-10-03 09:08:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-03 09:08:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 218 transitions. [2018-10-03 09:08:02,351 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 218 transitions. Word has length 212 [2018-10-03 09:08:02,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:02,351 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 218 transitions. [2018-10-03 09:08:02,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:08:02,352 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 218 transitions. [2018-10-03 09:08:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-03 09:08:02,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:02,353 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 1, 1, 1, 1, 1] [2018-10-03 09:08:02,353 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:02,353 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:02,353 INFO L82 PathProgramCache]: Analyzing trace with hash -155129459, now seen corresponding path program 82 times [2018-10-03 09:08:02,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:02,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:02,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:02,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:02,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 985 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:02,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:02,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:02,855 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:02,961 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:02,961 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:02,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 985 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:03,350 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:03,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-03 09:08:03,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-03 09:08:03,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-03 09:08:03,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:03,351 INFO L87 Difference]: Start difference. First operand 216 states and 218 transitions. Second operand 45 states. [2018-10-03 09:08:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:03,624 INFO L93 Difference]: Finished difference Result 230 states and 233 transitions. [2018-10-03 09:08:03,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:08:03,624 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 213 [2018-10-03 09:08:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:03,626 INFO L225 Difference]: With dead ends: 230 [2018-10-03 09:08:03,626 INFO L226 Difference]: Without dead ends: 224 [2018-10-03 09:08:03,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 43 [2018-10-03 09:08:03,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-03 09:08:03,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2018-10-03 09:08:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-03 09:08:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 222 transitions. [2018-10-03 09:08:03,649 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 222 transitions. Word has length 213 [2018-10-03 09:08:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:03,649 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 222 transitions. [2018-10-03 09:08:03,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-03 09:08:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 222 transitions. [2018-10-03 09:08:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-03 09:08:03,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:03,651 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 1, 1, 1, 1, 1] [2018-10-03 09:08:03,651 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:03,651 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:03,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1531687293, now seen corresponding path program 83 times [2018-10-03 09:08:03,651 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:03,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:03,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:03,652 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:03,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4515 backedges. 3612 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:05,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:05,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:05,206 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:05,353 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-03 09:08:05,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:05,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4515 backedges. 3612 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:05,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:05,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-03 09:08:05,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:08:05,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:08:05,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:05,739 INFO L87 Difference]: Start difference. First operand 220 states and 222 transitions. Second operand 88 states. [2018-10-03 09:08:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:08,069 INFO L93 Difference]: Finished difference Result 400 states and 404 transitions. [2018-10-03 09:08:08,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-03 09:08:08,070 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 217 [2018-10-03 09:08:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:08,071 INFO L225 Difference]: With dead ends: 400 [2018-10-03 09:08:08,071 INFO L226 Difference]: Without dead ends: 221 [2018-10-03 09:08:08,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 87 [2018-10-03 09:08:08,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-03 09:08:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-03 09:08:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-03 09:08:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-10-03 09:08:08,091 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 217 [2018-10-03 09:08:08,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:08,092 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-10-03 09:08:08,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:08:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-10-03 09:08:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-03 09:08:08,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:08,093 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 1, 1, 1, 1, 1] [2018-10-03 09:08:08,093 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:08,093 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1128490282, now seen corresponding path program 84 times [2018-10-03 09:08:08,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:08,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:08,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:08,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:08,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 1030 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:08,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:08,500 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:08,509 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:08,670 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 09:08:08,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:08,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 1030 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:09,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:09,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:08:09,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:08:09,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:08:09,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:09,059 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 46 states. [2018-10-03 09:08:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:09,387 INFO L93 Difference]: Finished difference Result 235 states and 238 transitions. [2018-10-03 09:08:09,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:08:09,388 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 218 [2018-10-03 09:08:09,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:09,389 INFO L225 Difference]: With dead ends: 235 [2018-10-03 09:08:09,389 INFO L226 Difference]: Without dead ends: 229 [2018-10-03 09:08:09,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 44 [2018-10-03 09:08:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-03 09:08:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2018-10-03 09:08:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-03 09:08:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-10-03 09:08:09,411 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 218 [2018-10-03 09:08:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:09,411 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-10-03 09:08:09,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:08:09,411 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-10-03 09:08:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-03 09:08:09,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:09,412 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 1, 1, 1, 1, 1] [2018-10-03 09:08:09,412 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:09,413 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:09,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1373260896, now seen corresponding path program 85 times [2018-10-03 09:08:09,413 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:09,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:09,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:09,413 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:09,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4730 backedges. 3784 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:10,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:10,971 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:10,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:11,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4730 backedges. 3784 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:11,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:11,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-03 09:08:11,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:08:11,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:08:11,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:11,472 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 90 states. [2018-10-03 09:08:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:13,836 INFO L93 Difference]: Finished difference Result 409 states and 413 transitions. [2018-10-03 09:08:13,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-03 09:08:13,836 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 222 [2018-10-03 09:08:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:13,837 INFO L225 Difference]: With dead ends: 409 [2018-10-03 09:08:13,837 INFO L226 Difference]: Without dead ends: 226 [2018-10-03 09:08:13,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.9s impTime 89 [2018-10-03 09:08:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-03 09:08:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-03 09:08:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-03 09:08:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 228 transitions. [2018-10-03 09:08:13,856 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 228 transitions. Word has length 222 [2018-10-03 09:08:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:13,856 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 228 transitions. [2018-10-03 09:08:13,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:08:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 228 transitions. [2018-10-03 09:08:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-03 09:08:13,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:13,857 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 1, 1, 1, 1, 1] [2018-10-03 09:08:13,857 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:13,858 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:13,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2022550873, now seen corresponding path program 86 times [2018-10-03 09:08:13,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:13,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:13,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:13,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:13,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1076 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:14,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:14,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:14,280 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:14,383 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:14,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:14,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1076 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:14,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:14,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-03 09:08:14,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-03 09:08:14,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-03 09:08:14,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:14,837 INFO L87 Difference]: Start difference. First operand 226 states and 228 transitions. Second operand 47 states. [2018-10-03 09:08:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:15,256 INFO L93 Difference]: Finished difference Result 240 states and 243 transitions. [2018-10-03 09:08:15,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:08:15,256 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 223 [2018-10-03 09:08:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:15,257 INFO L225 Difference]: With dead ends: 240 [2018-10-03 09:08:15,257 INFO L226 Difference]: Without dead ends: 234 [2018-10-03 09:08:15,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 45 [2018-10-03 09:08:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-03 09:08:15,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2018-10-03 09:08:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-03 09:08:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 232 transitions. [2018-10-03 09:08:15,279 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 232 transitions. Word has length 223 [2018-10-03 09:08:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:15,280 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 232 transitions. [2018-10-03 09:08:15,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-03 09:08:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 232 transitions. [2018-10-03 09:08:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-03 09:08:15,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:15,281 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 1, 1, 1, 1, 1] [2018-10-03 09:08:15,281 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:15,281 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:15,281 INFO L82 PathProgramCache]: Analyzing trace with hash 664947791, now seen corresponding path program 87 times [2018-10-03 09:08:15,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:15,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:15,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:15,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:15,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 3960 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:16,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:16,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:16,758 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:16,943 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-03 09:08:16,944 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:16,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 3960 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:17,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:17,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-03 09:08:17,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:08:17,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:08:17,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:17,344 INFO L87 Difference]: Start difference. First operand 230 states and 232 transitions. Second operand 92 states. [2018-10-03 09:08:19,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:19,904 INFO L93 Difference]: Finished difference Result 418 states and 422 transitions. [2018-10-03 09:08:19,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-03 09:08:19,904 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 227 [2018-10-03 09:08:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:19,905 INFO L225 Difference]: With dead ends: 418 [2018-10-03 09:08:19,905 INFO L226 Difference]: Without dead ends: 231 [2018-10-03 09:08:19,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 91 [2018-10-03 09:08:19,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-03 09:08:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-03 09:08:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-03 09:08:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-10-03 09:08:19,927 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 227 [2018-10-03 09:08:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:19,927 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-10-03 09:08:19,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:08:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-10-03 09:08:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-03 09:08:19,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:19,928 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 1, 1, 1, 1, 1] [2018-10-03 09:08:19,929 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:19,929 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:19,929 INFO L82 PathProgramCache]: Analyzing trace with hash -402751946, now seen corresponding path program 88 times [2018-10-03 09:08:19,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:19,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:19,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:19,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:19,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 1123 proven. 3872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:20,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:20,547 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:20,554 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:20,667 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:20,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:20,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 1123 proven. 3872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:21,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:21,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:08:21,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:08:21,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:08:21,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:21,080 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 48 states. [2018-10-03 09:08:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:21,396 INFO L93 Difference]: Finished difference Result 245 states and 248 transitions. [2018-10-03 09:08:21,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:08:21,407 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 228 [2018-10-03 09:08:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:21,408 INFO L225 Difference]: With dead ends: 245 [2018-10-03 09:08:21,408 INFO L226 Difference]: Without dead ends: 239 [2018-10-03 09:08:21,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.3s impTime 46 [2018-10-03 09:08:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-03 09:08:21,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 235. [2018-10-03 09:08:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-03 09:08:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-10-03 09:08:21,434 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 228 [2018-10-03 09:08:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:21,434 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-10-03 09:08:21,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:08:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-10-03 09:08:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-03 09:08:21,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:21,436 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 1, 1, 1, 1, 1] [2018-10-03 09:08:21,436 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:21,436 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:21,436 INFO L82 PathProgramCache]: Analyzing trace with hash -564828500, now seen corresponding path program 89 times [2018-10-03 09:08:21,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:21,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:21,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:21,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:21,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5175 backedges. 4140 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:22,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:22,993 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:23,001 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:23,166 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-03 09:08:23,166 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:23,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5175 backedges. 4140 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:23,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:23,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-03 09:08:23,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-03 09:08:23,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-03 09:08:23,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:23,577 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 94 states. [2018-10-03 09:08:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:26,409 INFO L93 Difference]: Finished difference Result 427 states and 431 transitions. [2018-10-03 09:08:26,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-03 09:08:26,410 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 232 [2018-10-03 09:08:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:26,411 INFO L225 Difference]: With dead ends: 427 [2018-10-03 09:08:26,411 INFO L226 Difference]: Without dead ends: 236 [2018-10-03 09:08:26,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.1s impTime 93 [2018-10-03 09:08:26,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-03 09:08:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-03 09:08:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-03 09:08:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 238 transitions. [2018-10-03 09:08:26,439 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 238 transitions. Word has length 232 [2018-10-03 09:08:26,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:26,439 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 238 transitions. [2018-10-03 09:08:26,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-03 09:08:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 238 transitions. [2018-10-03 09:08:26,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-03 09:08:26,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:26,441 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 1, 1, 1, 1, 1] [2018-10-03 09:08:26,441 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:26,441 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:26,441 INFO L82 PathProgramCache]: Analyzing trace with hash 522145061, now seen corresponding path program 90 times [2018-10-03 09:08:26,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:26,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:26,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:26,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:26,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 1171 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:26,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:26,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:08:26,950 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:27,126 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-03 09:08:27,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:27,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 1171 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:27,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:27,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-03 09:08:27,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-03 09:08:27,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-03 09:08:27,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:27,545 INFO L87 Difference]: Start difference. First operand 236 states and 238 transitions. Second operand 49 states. [2018-10-03 09:08:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:27,871 INFO L93 Difference]: Finished difference Result 250 states and 253 transitions. [2018-10-03 09:08:27,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:08:27,878 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 233 [2018-10-03 09:08:27,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:27,879 INFO L225 Difference]: With dead ends: 250 [2018-10-03 09:08:27,879 INFO L226 Difference]: Without dead ends: 244 [2018-10-03 09:08:27,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 47 [2018-10-03 09:08:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-03 09:08:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2018-10-03 09:08:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-03 09:08:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 242 transitions. [2018-10-03 09:08:27,906 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 242 transitions. Word has length 233 [2018-10-03 09:08:27,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:27,906 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 242 transitions. [2018-10-03 09:08:27,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-03 09:08:27,906 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 242 transitions. [2018-10-03 09:08:27,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-03 09:08:27,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:27,907 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1, 1, 1] [2018-10-03 09:08:27,907 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:27,907 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:27,908 INFO L82 PathProgramCache]: Analyzing trace with hash -377018853, now seen corresponding path program 91 times [2018-10-03 09:08:27,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:27,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:27,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:27,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:27,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 4324 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:29,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:29,122 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:29,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:29,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 4324 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:29,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:29,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-03 09:08:29,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 09:08:29,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 09:08:29,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:29,727 INFO L87 Difference]: Start difference. First operand 240 states and 242 transitions. Second operand 96 states. [2018-10-03 09:08:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:32,162 INFO L93 Difference]: Finished difference Result 436 states and 440 transitions. [2018-10-03 09:08:32,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-03 09:08:32,162 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 237 [2018-10-03 09:08:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:32,163 INFO L225 Difference]: With dead ends: 436 [2018-10-03 09:08:32,163 INFO L226 Difference]: Without dead ends: 241 [2018-10-03 09:08:32,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.8s impTime 95 [2018-10-03 09:08:32,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-03 09:08:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-03 09:08:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-03 09:08:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-10-03 09:08:32,196 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 237 [2018-10-03 09:08:32,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:32,196 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-10-03 09:08:32,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 09:08:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-10-03 09:08:32,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-03 09:08:32,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:32,198 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1] [2018-10-03 09:08:32,198 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:32,198 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:32,199 INFO L82 PathProgramCache]: Analyzing trace with hash 125264706, now seen corresponding path program 92 times [2018-10-03 09:08:32,199 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:32,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:32,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:32,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:32,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 1220 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:32,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:32,701 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 [2018-10-03 09:08:32,708 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:32,816 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:32,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:32,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 1220 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:33,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:33,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:08:33,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:08:33,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:08:33,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:33,262 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 50 states. [2018-10-03 09:08:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:33,618 INFO L93 Difference]: Finished difference Result 255 states and 258 transitions. [2018-10-03 09:08:33,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:08:33,618 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 238 [2018-10-03 09:08:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:33,619 INFO L225 Difference]: With dead ends: 255 [2018-10-03 09:08:33,619 INFO L226 Difference]: Without dead ends: 249 [2018-10-03 09:08:33,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 48 [2018-10-03 09:08:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-03 09:08:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 245. [2018-10-03 09:08:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-03 09:08:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2018-10-03 09:08:33,645 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 238 [2018-10-03 09:08:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:33,645 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2018-10-03 09:08:33,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:08:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2018-10-03 09:08:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-03 09:08:33,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:33,646 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 1, 1, 1, 1, 1] [2018-10-03 09:08:33,647 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:33,647 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:33,647 INFO L82 PathProgramCache]: Analyzing trace with hash 494724536, now seen corresponding path program 93 times [2018-10-03 09:08:33,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:33,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:33,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:33,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:33,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5640 backedges. 4512 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:35,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:35,118 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:35,124 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:35,332 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-03 09:08:35,332 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:35,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5640 backedges. 4512 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:35,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:35,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-03 09:08:35,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-03 09:08:35,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-03 09:08:35,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:35,895 INFO L87 Difference]: Start difference. First operand 245 states and 247 transitions. Second operand 98 states. [2018-10-03 09:08:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:38,473 INFO L93 Difference]: Finished difference Result 445 states and 449 transitions. [2018-10-03 09:08:38,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-03 09:08:38,473 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 242 [2018-10-03 09:08:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:38,474 INFO L225 Difference]: With dead ends: 445 [2018-10-03 09:08:38,474 INFO L226 Difference]: Without dead ends: 246 [2018-10-03 09:08:38,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.9s impTime 97 [2018-10-03 09:08:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-03 09:08:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-10-03 09:08:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-03 09:08:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 248 transitions. [2018-10-03 09:08:38,499 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 248 transitions. Word has length 242 [2018-10-03 09:08:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:38,499 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 248 transitions. [2018-10-03 09:08:38,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-03 09:08:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 248 transitions. [2018-10-03 09:08:38,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-03 09:08:38,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:38,500 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 1, 1, 1, 1, 1] [2018-10-03 09:08:38,500 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:38,500 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:38,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1883780879, now seen corresponding path program 94 times [2018-10-03 09:08:38,501 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:38,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:38,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:38,501 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:38,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 1270 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:39,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:39,051 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:39,059 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:39,181 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:39,181 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:39,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 1270 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:39,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:39,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-03 09:08:39,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-03 09:08:39,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-03 09:08:39,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:39,640 INFO L87 Difference]: Start difference. First operand 246 states and 248 transitions. Second operand 51 states. [2018-10-03 09:08:39,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:39,958 INFO L93 Difference]: Finished difference Result 260 states and 263 transitions. [2018-10-03 09:08:39,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:08:39,958 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 243 [2018-10-03 09:08:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:39,959 INFO L225 Difference]: With dead ends: 260 [2018-10-03 09:08:39,959 INFO L226 Difference]: Without dead ends: 254 [2018-10-03 09:08:39,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 49 [2018-10-03 09:08:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-03 09:08:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2018-10-03 09:08:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-03 09:08:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 252 transitions. [2018-10-03 09:08:39,981 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 252 transitions. Word has length 243 [2018-10-03 09:08:39,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:39,981 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 252 transitions. [2018-10-03 09:08:39,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-03 09:08:39,981 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 252 transitions. [2018-10-03 09:08:39,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-03 09:08:39,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:39,982 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 1, 1, 1, 1, 1] [2018-10-03 09:08:39,982 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:39,982 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:39,983 INFO L82 PathProgramCache]: Analyzing trace with hash 514120679, now seen corresponding path program 95 times [2018-10-03 09:08:39,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:39,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:39,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:39,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:39,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5880 backedges. 4704 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:41,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:41,353 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:41,360 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:41,531 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-03 09:08:41,531 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:41,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5880 backedges. 4704 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:41,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:41,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-03 09:08:41,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 09:08:41,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 09:08:41,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:41,972 INFO L87 Difference]: Start difference. First operand 250 states and 252 transitions. Second operand 100 states. [2018-10-03 09:08:43,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:43,680 INFO L93 Difference]: Finished difference Result 454 states and 458 transitions. [2018-10-03 09:08:43,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-03 09:08:43,680 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 247 [2018-10-03 09:08:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:43,681 INFO L225 Difference]: With dead ends: 454 [2018-10-03 09:08:43,681 INFO L226 Difference]: Without dead ends: 251 [2018-10-03 09:08:43,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.5s impTime 99 [2018-10-03 09:08:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-03 09:08:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-03 09:08:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-03 09:08:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 253 transitions. [2018-10-03 09:08:43,709 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 253 transitions. Word has length 247 [2018-10-03 09:08:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:43,710 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 253 transitions. [2018-10-03 09:08:43,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 09:08:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 253 transitions. [2018-10-03 09:08:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-03 09:08:43,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:43,711 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 1, 1, 1, 1, 1] [2018-10-03 09:08:43,711 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:43,711 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:43,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1107028914, now seen corresponding path program 96 times [2018-10-03 09:08:43,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:43,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:43,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:43,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:43,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 1321 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:44,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:44,192 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 [2018-10-03 09:08:44,199 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:08:44,379 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 09:08:44,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:44,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 1321 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:44,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:44,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:08:44,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:08:44,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:08:44,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:44,827 INFO L87 Difference]: Start difference. First operand 251 states and 253 transitions. Second operand 52 states. [2018-10-03 09:08:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:45,200 INFO L93 Difference]: Finished difference Result 265 states and 268 transitions. [2018-10-03 09:08:45,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:08:45,200 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 248 [2018-10-03 09:08:45,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:45,202 INFO L225 Difference]: With dead ends: 265 [2018-10-03 09:08:45,202 INFO L226 Difference]: Without dead ends: 259 [2018-10-03 09:08:45,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 50 [2018-10-03 09:08:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-03 09:08:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-10-03 09:08:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-03 09:08:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 257 transitions. [2018-10-03 09:08:45,251 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 257 transitions. Word has length 248 [2018-10-03 09:08:45,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:45,251 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 257 transitions. [2018-10-03 09:08:45,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:08:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 257 transitions. [2018-10-03 09:08:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-03 09:08:45,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:45,252 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 1, 1, 1, 1, 1] [2018-10-03 09:08:45,252 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:45,252 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:45,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1827811524, now seen corresponding path program 97 times [2018-10-03 09:08:45,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:45,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:45,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:45,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:45,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6125 backedges. 4900 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:47,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:47,008 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:47,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:47,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6125 backedges. 4900 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:47,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:47,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-03 09:08:47,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-03 09:08:47,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-03 09:08:47,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:47,605 INFO L87 Difference]: Start difference. First operand 255 states and 257 transitions. Second operand 102 states. [2018-10-03 09:08:50,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:50,878 INFO L93 Difference]: Finished difference Result 463 states and 467 transitions. [2018-10-03 09:08:50,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-03 09:08:50,878 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 252 [2018-10-03 09:08:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:50,879 INFO L225 Difference]: With dead ends: 463 [2018-10-03 09:08:50,879 INFO L226 Difference]: Without dead ends: 256 [2018-10-03 09:08:50,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.4s impTime 101 [2018-10-03 09:08:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-03 09:08:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-03 09:08:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-03 09:08:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 258 transitions. [2018-10-03 09:08:50,916 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 258 transitions. Word has length 252 [2018-10-03 09:08:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:50,916 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 258 transitions. [2018-10-03 09:08:50,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-03 09:08:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 258 transitions. [2018-10-03 09:08:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-03 09:08:50,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:50,918 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 1, 1, 1, 1, 1] [2018-10-03 09:08:50,918 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:50,918 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash -803659587, now seen corresponding path program 98 times [2018-10-03 09:08:50,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:50,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:50,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:50,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:50,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 1373 proven. 4802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:51,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:51,521 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:51,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:51,650 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:51,650 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:51,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 1373 proven. 4802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:52,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:52,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-03 09:08:52,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-03 09:08:52,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-03 09:08:52,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:52,131 INFO L87 Difference]: Start difference. First operand 256 states and 258 transitions. Second operand 53 states. [2018-10-03 09:08:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:52,478 INFO L93 Difference]: Finished difference Result 270 states and 273 transitions. [2018-10-03 09:08:52,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:08:52,479 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 253 [2018-10-03 09:08:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:52,480 INFO L225 Difference]: With dead ends: 270 [2018-10-03 09:08:52,480 INFO L226 Difference]: Without dead ends: 264 [2018-10-03 09:08:52,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.2s impTime 51 [2018-10-03 09:08:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-10-03 09:08:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260. [2018-10-03 09:08:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-10-03 09:08:52,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 262 transitions. [2018-10-03 09:08:52,510 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 262 transitions. Word has length 253 [2018-10-03 09:08:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:52,511 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 262 transitions. [2018-10-03 09:08:52,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-03 09:08:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 262 transitions. [2018-10-03 09:08:52,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-03 09:08:52,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:52,512 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 1, 1, 1, 1, 1] [2018-10-03 09:08:52,512 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:52,512 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:52,512 INFO L82 PathProgramCache]: Analyzing trace with hash 465399219, now seen corresponding path program 99 times [2018-10-03 09:08:52,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:52,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:52,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:52,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:52,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6375 backedges. 5100 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:53,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:53,614 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 [2018-10-03 09:08:53,621 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:08:53,842 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-03 09:08:53,843 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:53,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6375 backedges. 5100 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:54,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:54,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-03 09:08:54,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 09:08:54,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 09:08:54,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:54,318 INFO L87 Difference]: Start difference. First operand 260 states and 262 transitions. Second operand 104 states. [2018-10-03 09:08:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:55,516 INFO L93 Difference]: Finished difference Result 472 states and 476 transitions. [2018-10-03 09:08:55,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-03 09:08:55,517 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 257 [2018-10-03 09:08:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:55,518 INFO L225 Difference]: With dead ends: 472 [2018-10-03 09:08:55,518 INFO L226 Difference]: Without dead ends: 261 [2018-10-03 09:08:55,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 103 [2018-10-03 09:08:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-03 09:08:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-10-03 09:08:55,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-10-03 09:08:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 263 transitions. [2018-10-03 09:08:55,545 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 263 transitions. Word has length 257 [2018-10-03 09:08:55,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:55,545 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 263 transitions. [2018-10-03 09:08:55,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 09:08:55,545 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 263 transitions. [2018-10-03 09:08:55,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-03 09:08:55,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:55,546 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 1, 1, 1, 1, 1] [2018-10-03 09:08:55,546 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:55,547 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1064997210, now seen corresponding path program 100 times [2018-10-03 09:08:55,547 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:55,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:55,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:55,548 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:55,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 1426 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:56,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:56,477 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 [2018-10-03 09:08:56,484 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:08:56,611 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:08:56,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:56,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 1426 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:57,220 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:57,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:08:57,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:08:57,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:08:57,221 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:57,221 INFO L87 Difference]: Start difference. First operand 261 states and 263 transitions. Second operand 54 states. [2018-10-03 09:08:57,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:57,572 INFO L93 Difference]: Finished difference Result 275 states and 278 transitions. [2018-10-03 09:08:57,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:08:57,572 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 258 [2018-10-03 09:08:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:57,573 INFO L225 Difference]: With dead ends: 275 [2018-10-03 09:08:57,573 INFO L226 Difference]: Without dead ends: 269 [2018-10-03 09:08:57,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.5s impTime 52 [2018-10-03 09:08:57,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-03 09:08:57,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2018-10-03 09:08:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-03 09:08:57,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 267 transitions. [2018-10-03 09:08:57,602 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 267 transitions. Word has length 258 [2018-10-03 09:08:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:57,602 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 267 transitions. [2018-10-03 09:08:57,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:08:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 267 transitions. [2018-10-03 09:08:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-03 09:08:57,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:57,603 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 1, 1, 1, 1, 1] [2018-10-03 09:08:57,603 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:57,604 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:57,604 INFO L82 PathProgramCache]: Analyzing trace with hash 629884880, now seen corresponding path program 101 times [2018-10-03 09:08:57,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:57,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:57,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:57,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:08:57,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6630 backedges. 5304 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:58,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:58,850 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:08:58,856 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:08:59,176 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-03 09:08:59,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:59,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6630 backedges. 5304 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:59,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:59,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-03 09:08:59,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-03 09:08:59,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-03 09:08:59,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:59,851 INFO L87 Difference]: Start difference. First operand 265 states and 267 transitions. Second operand 106 states. [2018-10-03 09:09:03,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:03,446 INFO L93 Difference]: Finished difference Result 481 states and 485 transitions. [2018-10-03 09:09:03,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-03 09:09:03,446 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 262 [2018-10-03 09:09:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:03,447 INFO L225 Difference]: With dead ends: 481 [2018-10-03 09:09:03,447 INFO L226 Difference]: Without dead ends: 266 [2018-10-03 09:09:03,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.0s impTime 105 [2018-10-03 09:09:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-10-03 09:09:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-10-03 09:09:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-10-03 09:09:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 268 transitions. [2018-10-03 09:09:03,482 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 268 transitions. Word has length 262 [2018-10-03 09:09:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:03,482 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 268 transitions. [2018-10-03 09:09:03,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-03 09:09:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 268 transitions. [2018-10-03 09:09:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-03 09:09:03,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:03,483 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 1, 1, 1, 1, 1] [2018-10-03 09:09:03,484 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:03,484 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:03,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1501211511, now seen corresponding path program 102 times [2018-10-03 09:09:03,484 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:03,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:03,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:03,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:03,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 1480 proven. 5202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:04,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:04,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:04,161 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:04,357 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-03 09:09:04,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:04,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 1480 proven. 5202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:04,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:04,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-03 09:09:04,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-03 09:09:04,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-03 09:09:04,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:04,837 INFO L87 Difference]: Start difference. First operand 266 states and 268 transitions. Second operand 55 states. [2018-10-03 09:09:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:05,209 INFO L93 Difference]: Finished difference Result 280 states and 283 transitions. [2018-10-03 09:09:05,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:09:05,209 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 263 [2018-10-03 09:09:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:05,210 INFO L225 Difference]: With dead ends: 280 [2018-10-03 09:09:05,210 INFO L226 Difference]: Without dead ends: 274 [2018-10-03 09:09:05,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.3s impTime 53 [2018-10-03 09:09:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-10-03 09:09:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 270. [2018-10-03 09:09:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-10-03 09:09:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 272 transitions. [2018-10-03 09:09:05,241 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 272 transitions. Word has length 263 [2018-10-03 09:09:05,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:05,241 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 272 transitions. [2018-10-03 09:09:05,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-03 09:09:05,241 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 272 transitions. [2018-10-03 09:09:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-03 09:09:05,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:05,242 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 1, 1, 1, 1, 1] [2018-10-03 09:09:05,242 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:05,242 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:05,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1240278145, now seen corresponding path program 103 times [2018-10-03 09:09:05,243 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:05,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:05,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:05,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:05,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6890 backedges. 5512 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:07,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:07,458 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 [2018-10-03 09:09:07,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:07,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6890 backedges. 5512 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:08,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:08,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-03 09:09:08,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 09:09:08,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 09:09:08,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:08,101 INFO L87 Difference]: Start difference. First operand 270 states and 272 transitions. Second operand 108 states. [2018-10-03 09:09:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:11,617 INFO L93 Difference]: Finished difference Result 490 states and 494 transitions. [2018-10-03 09:09:11,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-03 09:09:11,617 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 267 [2018-10-03 09:09:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:11,618 INFO L225 Difference]: With dead ends: 490 [2018-10-03 09:09:11,618 INFO L226 Difference]: Without dead ends: 271 [2018-10-03 09:09:11,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 2.9s impTime 107 [2018-10-03 09:09:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-03 09:09:11,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-03 09:09:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-03 09:09:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 273 transitions. [2018-10-03 09:09:11,647 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 273 transitions. Word has length 267 [2018-10-03 09:09:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:11,647 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 273 transitions. [2018-10-03 09:09:11,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 09:09:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 273 transitions. [2018-10-03 09:09:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-03 09:09:11,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:11,648 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 1, 1, 1, 1, 1] [2018-10-03 09:09:11,648 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:11,648 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:11,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1999690342, now seen corresponding path program 104 times [2018-10-03 09:09:11,649 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:11,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:11,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:11,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:11,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 1535 proven. 5408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:12,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:12,180 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 [2018-10-03 09:09:12,188 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:12,311 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:12,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:12,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 1535 proven. 5408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:12,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:12,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:09:12,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:09:12,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:09:12,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:12,826 INFO L87 Difference]: Start difference. First operand 271 states and 273 transitions. Second operand 56 states. [2018-10-03 09:09:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:13,233 INFO L93 Difference]: Finished difference Result 285 states and 288 transitions. [2018-10-03 09:09:13,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:09:13,234 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 268 [2018-10-03 09:09:13,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:13,234 INFO L225 Difference]: With dead ends: 285 [2018-10-03 09:09:13,234 INFO L226 Difference]: Without dead ends: 279 [2018-10-03 09:09:13,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 54 [2018-10-03 09:09:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-03 09:09:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2018-10-03 09:09:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-03 09:09:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 277 transitions. [2018-10-03 09:09:13,264 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 277 transitions. Word has length 268 [2018-10-03 09:09:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:13,264 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 277 transitions. [2018-10-03 09:09:13,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:09:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 277 transitions. [2018-10-03 09:09:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-03 09:09:13,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:13,265 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 1, 1, 1, 1, 1] [2018-10-03 09:09:13,265 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:13,265 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1751242020, now seen corresponding path program 105 times [2018-10-03 09:09:13,265 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:13,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:13,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:13,266 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:13,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 5724 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:15,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:15,395 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 [2018-10-03 09:09:15,403 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:15,643 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-03 09:09:15,643 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:15,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 5724 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:16,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:16,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-03 09:09:16,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-03 09:09:16,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-03 09:09:16,126 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:16,127 INFO L87 Difference]: Start difference. First operand 275 states and 277 transitions. Second operand 110 states. [2018-10-03 09:09:19,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:19,758 INFO L93 Difference]: Finished difference Result 499 states and 503 transitions. [2018-10-03 09:09:19,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-03 09:09:19,759 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 272 [2018-10-03 09:09:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:19,759 INFO L225 Difference]: With dead ends: 499 [2018-10-03 09:09:19,759 INFO L226 Difference]: Without dead ends: 276 [2018-10-03 09:09:19,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 2.9s impTime 109 [2018-10-03 09:09:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-10-03 09:09:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-10-03 09:09:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-10-03 09:09:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 278 transitions. [2018-10-03 09:09:19,792 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 278 transitions. Word has length 272 [2018-10-03 09:09:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:19,792 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 278 transitions. [2018-10-03 09:09:19,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-03 09:09:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 278 transitions. [2018-10-03 09:09:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-03 09:09:19,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:19,793 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 1, 1, 1, 1, 1] [2018-10-03 09:09:19,794 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:19,794 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:19,794 INFO L82 PathProgramCache]: Analyzing trace with hash -104962987, now seen corresponding path program 106 times [2018-10-03 09:09:19,794 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:19,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:19,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:19,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:19,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 1591 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:20,324 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:20,324 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 [2018-10-03 09:09:20,330 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:20,468 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:20,468 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:20,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 1591 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:20,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:20,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-03 09:09:20,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-03 09:09:20,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-03 09:09:20,983 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:20,983 INFO L87 Difference]: Start difference. First operand 276 states and 278 transitions. Second operand 57 states. [2018-10-03 09:09:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:21,448 INFO L93 Difference]: Finished difference Result 290 states and 293 transitions. [2018-10-03 09:09:21,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:09:21,448 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 273 [2018-10-03 09:09:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:21,449 INFO L225 Difference]: With dead ends: 290 [2018-10-03 09:09:21,449 INFO L226 Difference]: Without dead ends: 284 [2018-10-03 09:09:21,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 55 [2018-10-03 09:09:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-10-03 09:09:21,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2018-10-03 09:09:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-10-03 09:09:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 282 transitions. [2018-10-03 09:09:21,478 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 282 transitions. Word has length 273 [2018-10-03 09:09:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:21,478 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 282 transitions. [2018-10-03 09:09:21,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-03 09:09:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 282 transitions. [2018-10-03 09:09:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-03 09:09:21,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:21,479 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 1, 1, 1, 1, 1] [2018-10-03 09:09:21,479 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:21,479 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:21,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1553521333, now seen corresponding path program 107 times [2018-10-03 09:09:21,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:21,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:21,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:21,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:21,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7425 backedges. 5940 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:23,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:23,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:23,449 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:23,661 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-03 09:09:23,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:23,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7425 backedges. 5940 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:24,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:24,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-03 09:09:24,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-03 09:09:24,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-03 09:09:24,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:24,177 INFO L87 Difference]: Start difference. First operand 280 states and 282 transitions. Second operand 112 states. [2018-10-03 09:09:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:28,102 INFO L93 Difference]: Finished difference Result 508 states and 512 transitions. [2018-10-03 09:09:28,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-03 09:09:28,102 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 277 [2018-10-03 09:09:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:28,103 INFO L225 Difference]: With dead ends: 508 [2018-10-03 09:09:28,103 INFO L226 Difference]: Without dead ends: 281 [2018-10-03 09:09:28,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.8s impTime 111 [2018-10-03 09:09:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-10-03 09:09:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-10-03 09:09:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-10-03 09:09:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 283 transitions. [2018-10-03 09:09:28,133 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 283 transitions. Word has length 277 [2018-10-03 09:09:28,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:28,133 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 283 transitions. [2018-10-03 09:09:28,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-03 09:09:28,133 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 283 transitions. [2018-10-03 09:09:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-03 09:09:28,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:28,134 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 1, 1, 1, 1, 1] [2018-10-03 09:09:28,134 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:28,134 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:28,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1476595854, now seen corresponding path program 108 times [2018-10-03 09:09:28,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:28,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:28,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:28,135 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:28,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 1648 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:28,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:28,839 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:28,846 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:29,060 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-03 09:09:29,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:29,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 1648 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:29,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:29,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:09:29,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:09:29,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:09:29,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:29,554 INFO L87 Difference]: Start difference. First operand 281 states and 283 transitions. Second operand 58 states. [2018-10-03 09:09:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:29,953 INFO L93 Difference]: Finished difference Result 295 states and 298 transitions. [2018-10-03 09:09:29,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:09:29,954 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 278 [2018-10-03 09:09:29,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:29,954 INFO L225 Difference]: With dead ends: 295 [2018-10-03 09:09:29,955 INFO L226 Difference]: Without dead ends: 289 [2018-10-03 09:09:29,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.3s impTime 56 [2018-10-03 09:09:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-10-03 09:09:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2018-10-03 09:09:30,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-10-03 09:09:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 287 transitions. [2018-10-03 09:09:30,005 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 287 transitions. Word has length 278 [2018-10-03 09:09:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:30,005 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 287 transitions. [2018-10-03 09:09:30,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:09:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 287 transitions. [2018-10-03 09:09:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-03 09:09:30,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:30,006 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 55, 1, 1, 1, 1, 1] [2018-10-03 09:09:30,007 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:30,007 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:30,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1426007576, now seen corresponding path program 109 times [2018-10-03 09:09:30,007 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:30,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:30,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:30,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:30,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:32,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7700 backedges. 6160 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:32,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:32,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:32,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:32,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7700 backedges. 6160 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:32,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:32,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-03 09:09:32,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-03 09:09:32,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-03 09:09:32,796 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:32,796 INFO L87 Difference]: Start difference. First operand 285 states and 287 transitions. Second operand 114 states. [2018-10-03 09:09:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:36,622 INFO L93 Difference]: Finished difference Result 517 states and 521 transitions. [2018-10-03 09:09:36,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-03 09:09:36,622 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 282 [2018-10-03 09:09:36,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:36,623 INFO L225 Difference]: With dead ends: 517 [2018-10-03 09:09:36,623 INFO L226 Difference]: Without dead ends: 286 [2018-10-03 09:09:36,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 2.9s impTime 113 [2018-10-03 09:09:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-10-03 09:09:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-10-03 09:09:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-10-03 09:09:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 288 transitions. [2018-10-03 09:09:36,658 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 288 transitions. Word has length 282 [2018-10-03 09:09:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:36,658 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 288 transitions. [2018-10-03 09:09:36,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-03 09:09:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 288 transitions. [2018-10-03 09:09:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-03 09:09:36,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:36,659 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 1, 1, 1, 1, 1] [2018-10-03 09:09:36,659 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:36,659 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:36,660 INFO L82 PathProgramCache]: Analyzing trace with hash 822497313, now seen corresponding path program 110 times [2018-10-03 09:09:36,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:36,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:36,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:36,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:36,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 1706 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:37,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:37,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:37,382 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:37,512 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:37,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:37,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 1706 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:38,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:38,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-03 09:09:38,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-03 09:09:38,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-03 09:09:38,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:38,005 INFO L87 Difference]: Start difference. First operand 286 states and 288 transitions. Second operand 59 states. [2018-10-03 09:09:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:38,424 INFO L93 Difference]: Finished difference Result 300 states and 303 transitions. [2018-10-03 09:09:38,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:09:38,425 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 283 [2018-10-03 09:09:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:38,425 INFO L225 Difference]: With dead ends: 300 [2018-10-03 09:09:38,425 INFO L226 Difference]: Without dead ends: 294 [2018-10-03 09:09:38,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.3s impTime 57 [2018-10-03 09:09:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-10-03 09:09:38,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 290. [2018-10-03 09:09:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-10-03 09:09:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 292 transitions. [2018-10-03 09:09:38,459 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 292 transitions. Word has length 283 [2018-10-03 09:09:38,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:38,460 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 292 transitions. [2018-10-03 09:09:38,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-03 09:09:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 292 transitions. [2018-10-03 09:09:38,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-03 09:09:38,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:38,461 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 56, 1, 1, 1, 1, 1] [2018-10-03 09:09:38,461 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:38,461 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:38,461 INFO L82 PathProgramCache]: Analyzing trace with hash -637777129, now seen corresponding path program 111 times [2018-10-03 09:09:38,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:38,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:38,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:38,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7980 backedges. 6384 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:40,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:40,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:40,334 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:40,588 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-03 09:09:40,588 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:40,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7980 backedges. 6384 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:41,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:41,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-03 09:09:41,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-03 09:09:41,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-03 09:09:41,105 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:41,105 INFO L87 Difference]: Start difference. First operand 290 states and 292 transitions. Second operand 116 states. Received shutdown request... [2018-10-03 09:09:41,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:09:41,956 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:09:41,961 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:09:41,961 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:09:41 BoogieIcfgContainer [2018-10-03 09:09:41,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:09:41,962 INFO L168 Benchmark]: Toolchain (without parser) took 235305.83 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 156.8 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 108.2 MB). Peak memory consumption was 265.0 MB. Max. memory is 7.1 GB. [2018-10-03 09:09:41,964 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:09:41,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.68 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:09:41,965 INFO L168 Benchmark]: Boogie Preprocessor took 26.01 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:09:41,966 INFO L168 Benchmark]: RCFGBuilder took 323.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-03 09:09:41,966 INFO L168 Benchmark]: TraceAbstraction took 234905.04 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 156.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.1 MB). Peak memory consumption was 243.8 MB. Max. memory is 7.1 GB. [2018-10-03 09:09:41,969 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 0.28 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 42.68 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 26.01 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 323.73 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 234905.04 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 156.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.1 MB). Peak memory consumption was 243.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 76). Cancelled while BasicCegarLoop was constructing difference of abstraction (290states) and FLOYD_HOARE automaton (currently 70 states, 116 states before enhancement), while ReachableStatesComputation was computing reachable states (139 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 234.8s OverallTime, 115 OverallIterations, 57 TraceHistogramMax, 95.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3683 SDtfs, 8620 SDslu, 74600 SDs, 0 SdLazy, 81581 SolverSat, 1920 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24626 GetRequests, 18057 SyntacticMatches, 0 SemanticMatches, 6569 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 140.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290occurred in iteration=114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 114 MinimizatonAttempts, 230 StatesRemovedByMinimization, 58 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.9s SsaConstructionTime, 10.5s SatisfiabilityAnalysisTime, 118.3s InterpolantComputationTime, 33054 NumberOfCodeBlocks, 33054 NumberOfCodeBlocksAsserted, 1840 NumberOfCheckSat, 32828 ConstructedInterpolants, 0 QuantifiedInterpolants, 18584264 SizeOfPredicates, 223 NumberOfNonLiveVariables, 52671 ConjunctsInSsa, 6661 ConjunctsInUnsatCore, 226 InterpolantComputations, 4 PerfectInterpolantSequences, 314720/604352 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/down.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-09-41-979.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/down.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-09-41-979.csv Completed graceful shutdown