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.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-133090d [2018-10-04 09:26:13,248 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:26:13,250 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:26:13,262 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-04 09:26:13,295 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-04 09:26:13,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:26:13,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:26:13,323 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:26:13,323 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:26:13,324 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:26:13,324 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:26:13,324 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:26:13,324 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:26:13,324 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:26:13,325 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:26:13,325 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:26:13,325 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:26:13,325 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:26:13,325 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:26:13,326 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:26:13,327 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:26:13,327 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:26:13,327 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:26:13,328 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:26:13,328 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:26:13,328 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:26:13,328 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:26:13,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:26:13,328 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:26:13,329 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:26:13,329 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:26:13,329 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:26:13,329 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:26:13,329 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:26:13,330 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:26:13,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:26:13,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:26:13,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:26:13,404 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:26:13,405 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:26:13,406 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl [2018-10-04 09:26:13,406 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl' [2018-10-04 09:26:13,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:26:13,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:26:13,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:26:13,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:26:13,453 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:26:13,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... [2018-10-04 09:26:13,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... [2018-10-04 09:26:13,493 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-04 09:26:13,493 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-04 09:26:13,493 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-04 09:26:13,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:26:13,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:26:13,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:26:13,497 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:26:13,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... [2018-10-04 09:26:13,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... [2018-10-04 09:26:13,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... [2018-10-04 09:26:13,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... [2018-10-04 09:26:13,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... [2018-10-04 09:26:13,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... [2018-10-04 09:26:13,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... [2018-10-04 09:26:13,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:26:13,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:26:13,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:26:13,521 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:26:13,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:26:13,596 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-04 09:26:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-04 09:26:13,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-04 09:26:13,875 INFO L338 CfgBuilder]: Using library mode [2018-10-04 09:26:13,876 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:26:13 BoogieIcfgContainer [2018-10-04 09:26:13,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:26:13,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:26:13,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:26:13,881 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:26:13,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:26:13" (1/2) ... [2018-10-04 09:26:13,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e50da and model type Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 09:26:13, skipping insertion in model container [2018-10-04 09:26:13,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:26:13" (2/2) ... [2018-10-04 09:26:13,884 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-ArraysIntegefied.bpl [2018-10-04 09:26:13,894 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:26:13,903 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:26:13,951 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:26:13,952 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:26:13,952 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:26:13,952 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:26:13,953 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:26:13,953 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:26:13,953 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:26:13,953 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:26:13,953 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:26:13,969 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-10-04 09:26:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:26:13,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:13,976 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-04 09:26:13,977 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:13,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:13,984 INFO L82 PathProgramCache]: Analyzing trace with hash 890493448, now seen corresponding path program 1 times [2018-10-04 09:26:13,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:13,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:14,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:14,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:14,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:26:14,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:26:14,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:26:14,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:26:14,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:26:14,185 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-10-04 09:26:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:14,276 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2018-10-04 09:26:14,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:26:14,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-04 09:26:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:14,288 INFO L225 Difference]: With dead ends: 22 [2018-10-04 09:26:14,289 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 09:26:14,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:26:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 09:26:14,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 09:26:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 09:26:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 09:26:14,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-10-04 09:26:14,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:14,329 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 09:26:14,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:26:14,330 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 09:26:14,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:26:14,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:14,331 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-04 09:26:14,331 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:14,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash 892342412, now seen corresponding path program 1 times [2018-10-04 09:26:14,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:14,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:14,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:14,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:14,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:26:14,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:26:14,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:26:14,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:26:14,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:26:14,359 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-10-04 09:26:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:14,372 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 09:26:14,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:26:14,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-04 09:26:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:14,373 INFO L225 Difference]: With dead ends: 13 [2018-10-04 09:26:14,374 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 09:26:14,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:26:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 09:26:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 09:26:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 09:26:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 09:26:14,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-10-04 09:26:14,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:14,379 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 09:26:14,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:26:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 09:26:14,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 09:26:14,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:14,380 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:14,380 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:14,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:14,381 INFO L82 PathProgramCache]: Analyzing trace with hash -391235530, now seen corresponding path program 1 times [2018-10-04 09:26:14,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:14,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:14,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:14,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:14,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:14,489 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:14,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:14,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:14,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:14,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 09:26:14,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:26:14,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:26:14,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-04 09:26:14,557 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-10-04 09:26:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:14,588 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 09:26:14,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 09:26:14,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-04 09:26:14,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:14,591 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:26:14,592 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 09:26:14,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-04 09:26:14,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 09:26:14,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 09:26:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 09:26:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 09:26:14,596 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-10-04 09:26:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:14,598 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 09:26:14,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:26:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 09:26:14,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 09:26:14,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:14,601 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:14,602 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:14,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:14,602 INFO L82 PathProgramCache]: Analyzing trace with hash -602113312, now seen corresponding path program 2 times [2018-10-04 09:26:14,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:14,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:14,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:14,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:14,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:14,710 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) [2018-10-04 09:26:14,728 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:14,759 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:26:14,760 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:14,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:14,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:14,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 09:26:14,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:26:14,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:26:14,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-04 09:26:14,790 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-10-04 09:26:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:14,803 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 09:26:14,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:26:14,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-10-04 09:26:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:14,805 INFO L225 Difference]: With dead ends: 21 [2018-10-04 09:26:14,805 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 09:26:14,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-04 09:26:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 09:26:14,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 09:26:14,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:26:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 09:26:14,810 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-10-04 09:26:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:14,810 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 09:26:14,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:26:14,811 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 09:26:14,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 09:26:14,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:14,812 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:14,812 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:14,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:14,813 INFO L82 PathProgramCache]: Analyzing trace with hash 334846090, now seen corresponding path program 3 times [2018-10-04 09:26:14,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:14,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:14,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:14,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:14,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:14,945 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:14,961 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:26:14,990 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 09:26:14,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:14,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:15,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:15,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 09:26:15,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:26:15,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:26:15,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-04 09:26:15,038 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-10-04 09:26:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:15,069 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 09:26:15,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 09:26:15,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-04 09:26:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:15,072 INFO L225 Difference]: With dead ends: 25 [2018-10-04 09:26:15,072 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 09:26:15,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-04 09:26:15,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 09:26:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 09:26:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 09:26:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 09:26:15,078 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-10-04 09:26:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:15,078 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 09:26:15,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:26:15,080 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 09:26:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 09:26:15,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:15,081 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:15,081 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:15,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:15,082 INFO L82 PathProgramCache]: Analyzing trace with hash -747417292, now seen corresponding path program 4 times [2018-10-04 09:26:15,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:15,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:15,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:15,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:15,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:15,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:15,346 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:15,353 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:26:15,387 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:26:15,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:15,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:15,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:15,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 09:26:15,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 09:26:15,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 09:26:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-04 09:26:15,432 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-10-04 09:26:15,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:15,455 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 09:26:15,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 09:26:15,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-10-04 09:26:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:15,458 INFO L225 Difference]: With dead ends: 29 [2018-10-04 09:26:15,458 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 09:26:15,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-04 09:26:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 09:26:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 09:26:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 09:26:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 09:26:15,463 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-10-04 09:26:15,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:15,464 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 09:26:15,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 09:26:15,464 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 09:26:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 09:26:15,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:15,465 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:15,465 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:15,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1016128734, now seen corresponding path program 5 times [2018-10-04 09:26:15,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:15,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:15,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:15,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:15,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:15,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:15,628 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:15,641 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:26:15,655 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 09:26:15,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:15,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:15,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:15,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 09:26:15,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 09:26:15,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 09:26:15,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-04 09:26:15,695 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-10-04 09:26:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:15,807 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 09:26:15,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 09:26:15,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-04 09:26:15,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:15,808 INFO L225 Difference]: With dead ends: 33 [2018-10-04 09:26:15,808 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 09:26:15,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-04 09:26:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 09:26:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 09:26:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 09:26:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 09:26:15,814 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-10-04 09:26:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:15,814 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 09:26:15,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 09:26:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 09:26:15,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 09:26:15,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:15,816 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:15,816 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:15,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:15,816 INFO L82 PathProgramCache]: Analyzing trace with hash -267873400, now seen corresponding path program 6 times [2018-10-04 09:26:15,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:15,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:15,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:15,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:15,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:15,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:15,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:15,961 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:26:15,984 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 09:26:15,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:15,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:16,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:16,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 09:26:16,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 09:26:16,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 09:26:16,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-04 09:26:16,023 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2018-10-04 09:26:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:16,047 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 09:26:16,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 09:26:16,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-10-04 09:26:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:16,049 INFO L225 Difference]: With dead ends: 37 [2018-10-04 09:26:16,050 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 09:26:16,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-04 09:26:16,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 09:26:16,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 09:26:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 09:26:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 09:26:16,055 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-10-04 09:26:16,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:16,055 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 09:26:16,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 09:26:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 09:26:16,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 09:26:16,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:16,057 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:16,057 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:16,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:16,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947278, now seen corresponding path program 7 times [2018-10-04 09:26:16,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:16,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:16,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:16,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:16,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:16,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:16,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:16,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:16,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:16,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:16,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 09:26:16,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 09:26:16,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 09:26:16,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-04 09:26:16,705 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2018-10-04 09:26:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:16,755 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 09:26:16,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 09:26:16,756 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-10-04 09:26:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:16,757 INFO L225 Difference]: With dead ends: 41 [2018-10-04 09:26:16,757 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 09:26:16,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-04 09:26:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 09:26:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 09:26:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 09:26:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 09:26:16,763 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-10-04 09:26:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:16,763 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 09:26:16,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 09:26:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 09:26:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 09:26:16,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:16,765 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:16,765 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:16,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:16,766 INFO L82 PathProgramCache]: Analyzing trace with hash -223329828, now seen corresponding path program 8 times [2018-10-04 09:26:16,766 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:16,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:16,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:16,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:16,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:16,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:16,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:16,927 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:26:16,941 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:26:16,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:16,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:16,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:16,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 09:26:16,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 09:26:16,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 09:26:16,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-04 09:26:16,985 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2018-10-04 09:26:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:17,037 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 09:26:17,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 09:26:17,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-10-04 09:26:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:17,039 INFO L225 Difference]: With dead ends: 45 [2018-10-04 09:26:17,039 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 09:26:17,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-04 09:26:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 09:26:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 09:26:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 09:26:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 09:26:17,045 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-10-04 09:26:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:17,045 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 09:26:17,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 09:26:17,045 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 09:26:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 09:26:17,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:17,047 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:17,047 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:17,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1659551354, now seen corresponding path program 9 times [2018-10-04 09:26:17,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:17,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:17,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:17,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:17,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:17,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:17,358 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:17,366 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:26:17,396 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 09:26:17,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:17,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:17,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:17,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 09:26:17,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 09:26:17,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 09:26:17,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-10-04 09:26:17,441 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 12 states. [2018-10-04 09:26:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:17,627 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 09:26:17,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 09:26:17,628 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-10-04 09:26:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:17,629 INFO L225 Difference]: With dead ends: 49 [2018-10-04 09:26:17,629 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 09:26:17,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-10-04 09:26:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 09:26:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 09:26:17,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 09:26:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 09:26:17,635 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-10-04 09:26:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:17,636 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 09:26:17,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 09:26:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 09:26:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 09:26:17,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:17,637 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:17,638 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:17,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:17,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2009179088, now seen corresponding path program 10 times [2018-10-04 09:26:17,639 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:17,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:17,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:17,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:17,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:17,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:17,994 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:18,001 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:26:18,037 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:26:18,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:18,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:18,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:18,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 09:26:18,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 09:26:18,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 09:26:18,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-10-04 09:26:18,075 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 13 states. [2018-10-04 09:26:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:18,151 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 09:26:18,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 09:26:18,155 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-10-04 09:26:18,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:18,156 INFO L225 Difference]: With dead ends: 53 [2018-10-04 09:26:18,156 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 09:26:18,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-10-04 09:26:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 09:26:18,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 09:26:18,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 09:26:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 09:26:18,162 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-10-04 09:26:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:18,162 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 09:26:18,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 09:26:18,163 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 09:26:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 09:26:18,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:18,164 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:18,164 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:18,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:18,164 INFO L82 PathProgramCache]: Analyzing trace with hash 782635482, now seen corresponding path program 11 times [2018-10-04 09:26:18,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:18,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:18,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:18,166 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:18,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:18,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:18,384 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:18,392 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:26:18,410 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 09:26:18,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:18,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:18,452 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:18,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 09:26:18,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 09:26:18,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 09:26:18,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-10-04 09:26:18,454 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 14 states. [2018-10-04 09:26:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:18,501 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 09:26:18,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 09:26:18,502 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-10-04 09:26:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:18,503 INFO L225 Difference]: With dead ends: 57 [2018-10-04 09:26:18,503 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 09:26:18,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-10-04 09:26:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 09:26:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 09:26:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 09:26:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 09:26:18,511 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-10-04 09:26:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:18,514 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 09:26:18,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 09:26:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 09:26:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 09:26:18,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:18,515 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:18,515 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:18,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:18,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1233576580, now seen corresponding path program 12 times [2018-10-04 09:26:18,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:18,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:18,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:18,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:18,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:18,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:18,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:18,747 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:26:18,909 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 09:26:18,910 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:18,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:18,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:18,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 09:26:18,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 09:26:18,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 09:26:18,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-10-04 09:26:18,970 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 15 states. [2018-10-04 09:26:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:19,087 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 09:26:19,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 09:26:19,088 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-10-04 09:26:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:19,089 INFO L225 Difference]: With dead ends: 61 [2018-10-04 09:26:19,089 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 09:26:19,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-10-04 09:26:19,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 09:26:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 09:26:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 09:26:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 09:26:19,094 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-10-04 09:26:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:19,095 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 09:26:19,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 09:26:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 09:26:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 09:26:19,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:19,096 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:19,096 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:19,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:19,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1893420590, now seen corresponding path program 13 times [2018-10-04 09:26:19,097 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:19,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:19,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:19,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:19,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:19,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:19,842 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:19,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:19,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:19,916 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:19,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 09:26:19,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 09:26:19,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 09:26:19,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-10-04 09:26:19,917 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 16 states. [2018-10-04 09:26:20,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:20,022 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 09:26:20,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 09:26:20,022 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-10-04 09:26:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:20,023 INFO L225 Difference]: With dead ends: 65 [2018-10-04 09:26:20,023 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 09:26:20,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-10-04 09:26:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 09:26:20,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 09:26:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 09:26:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 09:26:20,029 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-10-04 09:26:20,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:20,029 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 09:26:20,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 09:26:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 09:26:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 09:26:20,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:20,033 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:20,033 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:20,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:20,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1151478568, now seen corresponding path program 14 times [2018-10-04 09:26:20,034 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:20,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:20,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:20,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:20,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:20,292 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:20,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:20,304 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:26:20,344 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:26:20,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:20,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:20,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:20,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 09:26:20,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 09:26:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 09:26:20,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-10-04 09:26:20,389 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 17 states. [2018-10-04 09:26:20,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:20,448 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 09:26:20,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 09:26:20,448 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-10-04 09:26:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:20,449 INFO L225 Difference]: With dead ends: 69 [2018-10-04 09:26:20,449 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 09:26:20,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-10-04 09:26:20,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 09:26:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 09:26:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 09:26:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 09:26:20,457 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-10-04 09:26:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:20,457 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 09:26:20,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 09:26:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 09:26:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 09:26:20,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:20,461 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:20,461 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:20,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:20,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1586034306, now seen corresponding path program 15 times [2018-10-04 09:26:20,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:20,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:20,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:20,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:20,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:20,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:20,748 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:20,755 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:26:20,778 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 09:26:20,778 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:20,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:20,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:20,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 09:26:20,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 09:26:20,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 09:26:20,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-10-04 09:26:20,820 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 18 states. [2018-10-04 09:26:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:20,849 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 09:26:20,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 09:26:20,850 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-10-04 09:26:20,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:20,851 INFO L225 Difference]: With dead ends: 73 [2018-10-04 09:26:20,851 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 09:26:20,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-10-04 09:26:20,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 09:26:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 09:26:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 09:26:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 09:26:20,859 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-10-04 09:26:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:20,859 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 09:26:20,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 09:26:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 09:26:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 09:26:20,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:20,860 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:20,861 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:20,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:20,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1318531884, now seen corresponding path program 16 times [2018-10-04 09:26:20,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:20,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:20,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:20,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:20,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:21,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:21,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:21,445 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:26:21,463 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:26:21,463 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:21,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:21,509 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:21,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 09:26:21,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 09:26:21,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 09:26:21,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-10-04 09:26:21,510 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 19 states. [2018-10-04 09:26:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:21,675 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 09:26:21,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 09:26:21,676 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-10-04 09:26:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:21,677 INFO L225 Difference]: With dead ends: 77 [2018-10-04 09:26:21,677 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 09:26:21,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-10-04 09:26:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 09:26:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 09:26:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 09:26:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 09:26:21,681 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-10-04 09:26:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:21,682 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 09:26:21,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 09:26:21,682 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 09:26:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 09:26:21,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:21,683 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:21,684 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:21,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:21,684 INFO L82 PathProgramCache]: Analyzing trace with hash -561837354, now seen corresponding path program 17 times [2018-10-04 09:26:21,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:21,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:21,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:21,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:21,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:22,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:22,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:22,221 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:26:22,305 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 09:26:22,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:22,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:22,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:22,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 09:26:22,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 09:26:22,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 09:26:22,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-10-04 09:26:22,347 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 20 states. [2018-10-04 09:26:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:22,393 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 09:26:22,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 09:26:22,394 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-10-04 09:26:22,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:22,395 INFO L225 Difference]: With dead ends: 81 [2018-10-04 09:26:22,395 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 09:26:22,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-10-04 09:26:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 09:26:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 09:26:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 09:26:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 09:26:22,400 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-10-04 09:26:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:22,401 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 09:26:22,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 09:26:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 09:26:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 09:26:22,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:22,402 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:22,402 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:22,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:22,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1611070848, now seen corresponding path program 18 times [2018-10-04 09:26:22,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:22,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:22,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:22,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:22,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:22,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:22,692 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:22,700 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:26:22,721 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 09:26:22,722 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:22,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:22,768 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:22,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 09:26:22,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 09:26:22,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 09:26:22,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-10-04 09:26:22,770 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 21 states. [2018-10-04 09:26:22,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:22,834 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 09:26:22,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 09:26:22,834 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-10-04 09:26:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:22,835 INFO L225 Difference]: With dead ends: 85 [2018-10-04 09:26:22,835 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 09:26:22,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-10-04 09:26:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 09:26:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 09:26:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 09:26:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 09:26:22,838 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-10-04 09:26:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:22,839 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 09:26:22,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 09:26:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 09:26:22,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 09:26:22,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:22,840 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:22,840 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:22,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1013085398, now seen corresponding path program 19 times [2018-10-04 09:26:22,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:22,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:22,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:22,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:22,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:23,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:23,172 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:23,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:23,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:23,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:23,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 09:26:23,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 09:26:23,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 09:26:23,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-10-04 09:26:23,248 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-10-04 09:26:23,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:23,313 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 09:26:23,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 09:26:23,313 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-04 09:26:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:23,314 INFO L225 Difference]: With dead ends: 89 [2018-10-04 09:26:23,314 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 09:26:23,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-10-04 09:26:23,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 09:26:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 09:26:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 09:26:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 09:26:23,317 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-10-04 09:26:23,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:23,317 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 09:26:23,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 09:26:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 09:26:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 09:26:23,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:23,318 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:23,319 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:23,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:23,319 INFO L82 PathProgramCache]: Analyzing trace with hash 947991508, now seen corresponding path program 20 times [2018-10-04 09:26:23,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:23,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:23,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:23,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:23,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:23,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:23,629 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:23,638 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:26:23,658 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:26:23,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:23,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:23,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:23,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 09:26:23,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 09:26:23,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 09:26:23,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-10-04 09:26:23,719 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 23 states. [2018-10-04 09:26:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:23,854 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 09:26:23,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 09:26:23,857 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-10-04 09:26:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:23,858 INFO L225 Difference]: With dead ends: 93 [2018-10-04 09:26:23,858 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 09:26:23,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-10-04 09:26:23,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 09:26:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 09:26:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 09:26:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 09:26:23,860 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-10-04 09:26:23,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:23,861 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 09:26:23,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 09:26:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 09:26:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 09:26:23,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:23,862 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:23,862 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:23,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:23,862 INFO L82 PathProgramCache]: Analyzing trace with hash -861112450, now seen corresponding path program 21 times [2018-10-04 09:26:23,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:23,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:23,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:23,864 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:23,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:24,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:24,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:24,542 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:26:24,569 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 09:26:24,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:24,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:24,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:24,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 09:26:24,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 09:26:24,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 09:26:24,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-10-04 09:26:24,622 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 24 states. [2018-10-04 09:26:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:24,761 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 09:26:24,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 09:26:24,761 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-10-04 09:26:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:24,762 INFO L225 Difference]: With dead ends: 97 [2018-10-04 09:26:24,762 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 09:26:24,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-10-04 09:26:24,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 09:26:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 09:26:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 09:26:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 09:26:24,765 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-10-04 09:26:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:24,765 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 09:26:24,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 09:26:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 09:26:24,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 09:26:24,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:24,766 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:24,767 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:24,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:24,767 INFO L82 PathProgramCache]: Analyzing trace with hash 215602728, now seen corresponding path program 22 times [2018-10-04 09:26:24,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:24,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:24,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:24,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:24,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:25,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:25,204 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:25,216 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:26:25,235 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:26:25,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:25,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:25,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:25,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 09:26:25,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 09:26:25,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 09:26:25,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-10-04 09:26:25,277 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 25 states. [2018-10-04 09:26:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:25,319 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 09:26:25,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 09:26:25,319 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-10-04 09:26:25,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:25,320 INFO L225 Difference]: With dead ends: 101 [2018-10-04 09:26:25,321 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 09:26:25,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-10-04 09:26:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 09:26:25,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 09:26:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 09:26:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 09:26:25,325 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-10-04 09:26:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:25,325 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 09:26:25,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 09:26:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 09:26:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 09:26:25,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:25,326 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:25,326 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:25,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:25,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1534865454, now seen corresponding path program 23 times [2018-10-04 09:26:25,327 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:25,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:25,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:25,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:25,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:25,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:25,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:25,700 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:26:25,729 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 09:26:25,729 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:25,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:25,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:25,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 09:26:25,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 09:26:25,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 09:26:25,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-10-04 09:26:25,772 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 26 states. [2018-10-04 09:26:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:25,820 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 09:26:25,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 09:26:25,821 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-10-04 09:26:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:25,822 INFO L225 Difference]: With dead ends: 105 [2018-10-04 09:26:25,822 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 09:26:25,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-10-04 09:26:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 09:26:25,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 09:26:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 09:26:25,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 09:26:25,826 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-10-04 09:26:25,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:25,827 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 09:26:25,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 09:26:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 09:26:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 09:26:25,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:25,828 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:25,828 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:25,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash -35330948, now seen corresponding path program 24 times [2018-10-04 09:26:25,829 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:25,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:25,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:25,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:25,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:26,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:26,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:26,773 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:26:26,799 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 09:26:26,800 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:26,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:26,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:26,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 09:26:26,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 09:26:26,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 09:26:26,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-10-04 09:26:26,854 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 27 states. [2018-10-04 09:26:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:27,040 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 09:26:27,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 09:26:27,040 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-10-04 09:26:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:27,042 INFO L225 Difference]: With dead ends: 109 [2018-10-04 09:26:27,042 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 09:26:27,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-10-04 09:26:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 09:26:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 09:26:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 09:26:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 09:26:27,046 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-10-04 09:26:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:27,046 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 09:26:27,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 09:26:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 09:26:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 09:26:27,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:27,047 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:27,047 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:27,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:27,048 INFO L82 PathProgramCache]: Analyzing trace with hash -503868378, now seen corresponding path program 25 times [2018-10-04 09:26:27,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:27,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:27,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:27,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:27,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:27,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:27,743 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:27,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:27,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:27,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:27,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 09:26:27,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 09:26:27,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 09:26:27,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-10-04 09:26:27,825 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 28 states. [2018-10-04 09:26:27,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:27,884 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 09:26:27,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 09:26:27,885 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-10-04 09:26:27,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:27,886 INFO L225 Difference]: With dead ends: 113 [2018-10-04 09:26:27,886 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 09:26:27,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-10-04 09:26:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 09:26:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 09:26:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 09:26:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 09:26:27,890 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-10-04 09:26:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:27,891 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 09:26:27,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 09:26:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 09:26:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 09:26:27,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:27,892 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:27,892 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:27,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:27,892 INFO L82 PathProgramCache]: Analyzing trace with hash 410410704, now seen corresponding path program 26 times [2018-10-04 09:26:27,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:27,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:27,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:27,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:27,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:28,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:28,769 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:28,784 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:26:28,833 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:26:28,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:28,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:28,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:28,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 09:26:28,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 09:26:28,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 09:26:28,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-10-04 09:26:28,894 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 29 states. [2018-10-04 09:26:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:28,972 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 09:26:28,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 09:26:28,972 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-10-04 09:26:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:28,974 INFO L225 Difference]: With dead ends: 117 [2018-10-04 09:26:28,974 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 09:26:28,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-10-04 09:26:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 09:26:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 09:26:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 09:26:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 09:26:28,978 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-10-04 09:26:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:28,978 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 09:26:28,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 09:26:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 09:26:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 09:26:28,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:28,979 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:28,979 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:28,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:28,980 INFO L82 PathProgramCache]: Analyzing trace with hash 131843194, now seen corresponding path program 27 times [2018-10-04 09:26:28,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:28,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:28,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:28,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:28,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:29,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:29,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:29,852 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:26:29,891 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 09:26:29,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:29,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:29,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:29,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 09:26:29,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 09:26:29,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 09:26:29,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-10-04 09:26:29,942 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 30 states. [2018-10-04 09:26:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:30,066 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-04 09:26:30,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 09:26:30,067 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-10-04 09:26:30,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:30,068 INFO L225 Difference]: With dead ends: 121 [2018-10-04 09:26:30,068 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 09:26:30,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-10-04 09:26:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 09:26:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 09:26:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 09:26:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-04 09:26:30,073 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-10-04 09:26:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:30,073 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-04 09:26:30,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 09:26:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-04 09:26:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 09:26:30,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:30,074 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:30,074 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:30,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:30,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1432503588, now seen corresponding path program 28 times [2018-10-04 09:26:30,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:30,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:30,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:30,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:30,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:30,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:30,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:30,634 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:26:30,665 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:26:30,665 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:30,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:30,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:30,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 09:26:30,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 09:26:30,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 09:26:30,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-10-04 09:26:30,718 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 31 states. [2018-10-04 09:26:30,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:30,816 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-04 09:26:30,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 09:26:30,817 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-10-04 09:26:30,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:30,818 INFO L225 Difference]: With dead ends: 125 [2018-10-04 09:26:30,818 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 09:26:30,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-10-04 09:26:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 09:26:30,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 09:26:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 09:26:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-04 09:26:30,823 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-10-04 09:26:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:30,823 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-04 09:26:30,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 09:26:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-04 09:26:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 09:26:30,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:30,824 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:30,825 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:30,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:30,825 INFO L82 PathProgramCache]: Analyzing trace with hash -2063310642, now seen corresponding path program 29 times [2018-10-04 09:26:30,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:30,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:30,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:30,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:30,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:31,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:31,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:31,650 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:26:31,683 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 09:26:31,684 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:31,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:31,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:31,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 09:26:31,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 09:26:31,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 09:26:31,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-10-04 09:26:31,732 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 32 states. [2018-10-04 09:26:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:31,863 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-04 09:26:31,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 09:26:31,864 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-10-04 09:26:31,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:31,865 INFO L225 Difference]: With dead ends: 129 [2018-10-04 09:26:31,865 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 09:26:31,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-10-04 09:26:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 09:26:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 09:26:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 09:26:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-04 09:26:31,869 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-10-04 09:26:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:31,869 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-04 09:26:31,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 09:26:31,869 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-04 09:26:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 09:26:31,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:31,870 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:31,870 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:31,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:31,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1719888008, now seen corresponding path program 30 times [2018-10-04 09:26:31,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:31,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:31,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:31,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:31,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:32,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:32,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:32,349 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:26:32,399 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 09:26:32,399 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:32,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:32,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:32,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 09:26:32,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 09:26:32,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 09:26:32,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-10-04 09:26:32,442 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-10-04 09:26:32,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:32,510 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-04 09:26:32,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 09:26:32,511 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-10-04 09:26:32,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:32,512 INFO L225 Difference]: With dead ends: 133 [2018-10-04 09:26:32,512 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 09:26:32,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-10-04 09:26:32,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 09:26:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 09:26:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 09:26:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-04 09:26:32,517 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-10-04 09:26:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:32,518 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-04 09:26:32,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 09:26:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-04 09:26:32,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 09:26:32,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:32,519 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:32,519 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:32,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:32,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1270519518, now seen corresponding path program 31 times [2018-10-04 09:26:32,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:32,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:32,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:32,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:32,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:33,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:33,485 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:33,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:33,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:33,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:33,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 09:26:33,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 09:26:33,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 09:26:33,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-10-04 09:26:33,626 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 34 states. [2018-10-04 09:26:33,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:33,815 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-04 09:26:33,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 09:26:33,815 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-10-04 09:26:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:33,817 INFO L225 Difference]: With dead ends: 137 [2018-10-04 09:26:33,817 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 09:26:33,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-10-04 09:26:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 09:26:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 09:26:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 09:26:33,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-04 09:26:33,823 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-10-04 09:26:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:33,824 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-04 09:26:33,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 09:26:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-04 09:26:33,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 09:26:33,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:33,825 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:33,825 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:33,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:33,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1248242228, now seen corresponding path program 32 times [2018-10-04 09:26:33,826 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:33,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:33,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:33,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:33,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:34,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:34,423 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:34,430 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:26:34,454 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:26:34,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:34,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:34,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:34,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 09:26:34,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 09:26:34,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 09:26:34,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-10-04 09:26:34,501 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 35 states. [2018-10-04 09:26:34,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:34,601 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-04 09:26:34,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 09:26:34,601 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-10-04 09:26:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:34,602 INFO L225 Difference]: With dead ends: 141 [2018-10-04 09:26:34,602 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 09:26:34,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-10-04 09:26:34,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 09:26:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 09:26:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 09:26:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-04 09:26:34,605 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-10-04 09:26:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:34,606 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-04 09:26:34,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 09:26:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-04 09:26:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 09:26:34,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:34,607 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:34,607 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:34,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:34,607 INFO L82 PathProgramCache]: Analyzing trace with hash -596451978, now seen corresponding path program 33 times [2018-10-04 09:26:34,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:34,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:34,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:34,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:34,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:35,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:35,135 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:35,141 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:26:35,178 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 09:26:35,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:35,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:35,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:35,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 09:26:35,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 09:26:35,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 09:26:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-10-04 09:26:35,240 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 36 states. [2018-10-04 09:26:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:35,305 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-04 09:26:35,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 09:26:35,305 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-10-04 09:26:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:35,306 INFO L225 Difference]: With dead ends: 145 [2018-10-04 09:26:35,306 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 09:26:35,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-10-04 09:26:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 09:26:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 09:26:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 09:26:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-04 09:26:35,309 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-10-04 09:26:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:35,310 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-04 09:26:35,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 09:26:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-04 09:26:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 09:26:35,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:35,311 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:35,311 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:35,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:35,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1720483872, now seen corresponding path program 34 times [2018-10-04 09:26:35,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:35,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:35,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:35,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:35,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:36,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:36,026 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:36,032 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:26:36,060 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:26:36,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:36,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:36,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:36,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 09:26:36,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 09:26:36,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 09:26:36,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-10-04 09:26:36,117 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 37 states. [2018-10-04 09:26:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:36,198 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-04 09:26:36,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 09:26:36,198 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-10-04 09:26:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:36,200 INFO L225 Difference]: With dead ends: 149 [2018-10-04 09:26:36,200 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 09:26:36,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-10-04 09:26:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 09:26:36,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-04 09:26:36,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-04 09:26:36,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-04 09:26:36,205 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-10-04 09:26:36,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:36,206 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-04 09:26:36,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 09:26:36,206 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-04 09:26:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-04 09:26:36,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:36,207 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:36,207 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:36,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:36,207 INFO L82 PathProgramCache]: Analyzing trace with hash 811646410, now seen corresponding path program 35 times [2018-10-04 09:26:36,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:36,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:36,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:36,208 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:36,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:37,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:37,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:37,292 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:26:37,400 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 09:26:37,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:37,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:37,474 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:37,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 09:26:37,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 09:26:37,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 09:26:37,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-10-04 09:26:37,476 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 38 states. [2018-10-04 09:26:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:37,630 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-04 09:26:37,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 09:26:37,630 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-10-04 09:26:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:37,633 INFO L225 Difference]: With dead ends: 153 [2018-10-04 09:26:37,633 INFO L226 Difference]: Without dead ends: 151 [2018-10-04 09:26:37,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-10-04 09:26:37,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-04 09:26:37,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-04 09:26:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-04 09:26:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-04 09:26:37,639 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-10-04 09:26:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:37,639 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-04 09:26:37,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 09:26:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-04 09:26:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-04 09:26:37,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:37,640 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:37,640 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:37,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:37,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1428821620, now seen corresponding path program 36 times [2018-10-04 09:26:37,641 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:37,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:37,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:37,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:37,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:38,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:38,667 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:38,674 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:26:38,718 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 09:26:38,718 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:38,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:38,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:38,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 09:26:38,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 09:26:38,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 09:26:38,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-10-04 09:26:38,783 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 39 states. [2018-10-04 09:26:38,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:38,937 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-04 09:26:38,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 09:26:38,938 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-10-04 09:26:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:38,939 INFO L225 Difference]: With dead ends: 157 [2018-10-04 09:26:38,940 INFO L226 Difference]: Without dead ends: 155 [2018-10-04 09:26:38,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-10-04 09:26:38,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-04 09:26:38,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-04 09:26:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-04 09:26:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-04 09:26:38,944 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-10-04 09:26:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:38,945 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-04 09:26:38,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 09:26:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-04 09:26:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-04 09:26:38,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:38,946 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:38,946 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:38,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:38,946 INFO L82 PathProgramCache]: Analyzing trace with hash -823981538, now seen corresponding path program 37 times [2018-10-04 09:26:38,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:38,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:38,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:38,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:38,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:39,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:39,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:39,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:40,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:40,077 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:40,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 09:26:40,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 09:26:40,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 09:26:40,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-10-04 09:26:40,079 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 40 states. [2018-10-04 09:26:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:40,542 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-04 09:26:40,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 09:26:40,542 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-10-04 09:26:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:40,544 INFO L225 Difference]: With dead ends: 161 [2018-10-04 09:26:40,544 INFO L226 Difference]: Without dead ends: 159 [2018-10-04 09:26:40,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-10-04 09:26:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-04 09:26:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-04 09:26:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-04 09:26:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-04 09:26:40,549 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 154 [2018-10-04 09:26:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:40,549 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-04 09:26:40,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 09:26:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-04 09:26:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-04 09:26:40,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:40,550 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:40,551 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:40,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:40,551 INFO L82 PathProgramCache]: Analyzing trace with hash 373692616, now seen corresponding path program 38 times [2018-10-04 09:26:40,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:40,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:40,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:40,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:40,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:42,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:42,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:42,179 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:26:42,226 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:26:42,226 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:42,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:42,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:42,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 09:26:42,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 09:26:42,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 09:26:42,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-10-04 09:26:42,298 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 41 states. [2018-10-04 09:26:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:43,243 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-04 09:26:43,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 09:26:43,243 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-10-04 09:26:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:43,244 INFO L225 Difference]: With dead ends: 165 [2018-10-04 09:26:43,244 INFO L226 Difference]: Without dead ends: 163 [2018-10-04 09:26:43,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-10-04 09:26:43,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-04 09:26:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-04 09:26:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-04 09:26:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-04 09:26:43,248 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 158 [2018-10-04 09:26:43,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:43,248 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-04 09:26:43,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 09:26:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-04 09:26:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-04 09:26:43,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:43,253 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:43,253 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:43,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:43,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1026702734, now seen corresponding path program 39 times [2018-10-04 09:26:43,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:43,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:43,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:43,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:43,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:45,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:45,586 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:45,594 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:26:45,650 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 09:26:45,651 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:45,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:45,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:45,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 09:26:45,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 09:26:45,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 09:26:45,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-10-04 09:26:45,704 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 42 states. [2018-10-04 09:26:45,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:45,803 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-04 09:26:45,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 09:26:45,804 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-10-04 09:26:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:45,806 INFO L225 Difference]: With dead ends: 169 [2018-10-04 09:26:45,806 INFO L226 Difference]: Without dead ends: 167 [2018-10-04 09:26:45,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-10-04 09:26:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-04 09:26:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-04 09:26:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-04 09:26:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-04 09:26:45,810 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 162 [2018-10-04 09:26:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:45,811 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-04 09:26:45,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 09:26:45,811 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-04 09:26:45,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-04 09:26:45,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:45,812 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:45,812 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:45,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:45,813 INFO L82 PathProgramCache]: Analyzing trace with hash 716474140, now seen corresponding path program 40 times [2018-10-04 09:26:45,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:45,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:45,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:45,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:45,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:46,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:46,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:46,861 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:26:46,899 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:26:46,899 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:46,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:46,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:46,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 09:26:46,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 09:26:46,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 09:26:46,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-10-04 09:26:46,950 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 43 states. [2018-10-04 09:26:47,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:47,072 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-04 09:26:47,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 09:26:47,072 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-10-04 09:26:47,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:47,074 INFO L225 Difference]: With dead ends: 173 [2018-10-04 09:26:47,074 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 09:26:47,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-10-04 09:26:47,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 09:26:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-04 09:26:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-04 09:26:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-04 09:26:47,078 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 166 [2018-10-04 09:26:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:47,079 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-04 09:26:47,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 09:26:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-04 09:26:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-04 09:26:47,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:47,080 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:47,080 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:47,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:47,080 INFO L82 PathProgramCache]: Analyzing trace with hash 49604294, now seen corresponding path program 41 times [2018-10-04 09:26:47,080 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:47,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:47,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:47,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:47,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:47,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:47,913 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:47,921 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:26:47,981 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 09:26:47,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:47,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:48,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:48,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 09:26:48,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 09:26:48,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 09:26:48,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-10-04 09:26:48,051 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 44 states. [2018-10-04 09:26:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:48,514 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-04 09:26:48,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 09:26:48,515 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-10-04 09:26:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:48,516 INFO L225 Difference]: With dead ends: 177 [2018-10-04 09:26:48,516 INFO L226 Difference]: Without dead ends: 175 [2018-10-04 09:26:48,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-10-04 09:26:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-04 09:26:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-04 09:26:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-04 09:26:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-04 09:26:48,521 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 170 [2018-10-04 09:26:48,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:48,521 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-04 09:26:48,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 09:26:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-04 09:26:48,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-04 09:26:48,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:48,523 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:48,523 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:48,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:48,523 INFO L82 PathProgramCache]: Analyzing trace with hash -11968144, now seen corresponding path program 42 times [2018-10-04 09:26:48,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:48,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:48,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:48,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:48,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:49,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:49,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:49,526 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:26:49,579 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 09:26:49,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:49,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:49,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:49,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 09:26:49,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 09:26:49,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 09:26:49,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-10-04 09:26:49,651 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 45 states. [2018-10-04 09:26:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:49,791 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-04 09:26:49,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 09:26:49,791 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-10-04 09:26:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:49,792 INFO L225 Difference]: With dead ends: 181 [2018-10-04 09:26:49,793 INFO L226 Difference]: Without dead ends: 179 [2018-10-04 09:26:49,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-10-04 09:26:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-04 09:26:49,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-04 09:26:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-04 09:26:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-04 09:26:49,798 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 174 [2018-10-04 09:26:49,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:49,798 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-04 09:26:49,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 09:26:49,798 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-04 09:26:49,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-04 09:26:49,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:49,799 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:49,799 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:49,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:49,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516698, now seen corresponding path program 43 times [2018-10-04 09:26:49,800 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:49,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:49,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:49,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:49,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:51,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:51,524 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:51,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:51,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:51,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:51,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 09:26:51,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 09:26:51,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 09:26:51,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-10-04 09:26:51,626 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 46 states. [2018-10-04 09:26:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:51,908 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-04 09:26:51,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 09:26:51,908 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-10-04 09:26:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:51,909 INFO L225 Difference]: With dead ends: 185 [2018-10-04 09:26:51,909 INFO L226 Difference]: Without dead ends: 183 [2018-10-04 09:26:51,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-10-04 09:26:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-04 09:26:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-04 09:26:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-04 09:26:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-04 09:26:51,912 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 178 [2018-10-04 09:26:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:51,912 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-04 09:26:51,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 09:26:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-04 09:26:51,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-04 09:26:51,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:51,913 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:51,914 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:51,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:51,914 INFO L82 PathProgramCache]: Analyzing trace with hash -321345596, now seen corresponding path program 44 times [2018-10-04 09:26:51,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:51,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:51,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:51,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:26:51,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:53,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:53,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:53,061 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:26:53,097 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:26:53,097 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:53,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:53,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:53,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 09:26:53,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 09:26:53,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 09:26:53,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-10-04 09:26:53,153 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 47 states. [2018-10-04 09:26:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:53,272 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-04 09:26:53,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 09:26:53,273 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-10-04 09:26:53,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:53,274 INFO L225 Difference]: With dead ends: 189 [2018-10-04 09:26:53,275 INFO L226 Difference]: Without dead ends: 187 [2018-10-04 09:26:53,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-10-04 09:26:53,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-04 09:26:53,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-04 09:26:53,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-04 09:26:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-04 09:26:53,279 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 182 [2018-10-04 09:26:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:53,280 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-04 09:26:53,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 09:26:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-04 09:26:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-04 09:26:53,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:53,281 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:53,281 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:53,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:53,282 INFO L82 PathProgramCache]: Analyzing trace with hash -548899986, now seen corresponding path program 45 times [2018-10-04 09:26:53,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:53,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:53,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:53,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:53,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:54,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:54,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:54,821 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:26:54,879 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 09:26:54,879 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:54,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:54,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:54,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 09:26:54,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 09:26:54,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 09:26:54,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-10-04 09:26:54,959 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 48 states. [2018-10-04 09:26:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:55,083 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-04 09:26:55,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 09:26:55,083 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-10-04 09:26:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:55,085 INFO L225 Difference]: With dead ends: 193 [2018-10-04 09:26:55,085 INFO L226 Difference]: Without dead ends: 191 [2018-10-04 09:26:55,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-10-04 09:26:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-04 09:26:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-04 09:26:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-04 09:26:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-04 09:26:55,090 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 186 [2018-10-04 09:26:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:55,090 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-04 09:26:55,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 09:26:55,091 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-04 09:26:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-04 09:26:55,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:55,092 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:55,092 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:55,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:55,092 INFO L82 PathProgramCache]: Analyzing trace with hash 943086104, now seen corresponding path program 46 times [2018-10-04 09:26:55,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:55,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:55,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:55,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:55,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:56,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:56,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:56,424 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:26:56,465 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:26:56,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:56,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:56,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:56,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 09:26:56,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 09:26:56,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 09:26:56,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-10-04 09:26:56,551 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 49 states. [2018-10-04 09:26:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:56,766 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-04 09:26:56,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 09:26:56,766 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-10-04 09:26:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:56,768 INFO L225 Difference]: With dead ends: 197 [2018-10-04 09:26:56,768 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 09:26:56,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-10-04 09:26:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 09:26:56,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-04 09:26:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-04 09:26:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-04 09:26:56,772 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 190 [2018-10-04 09:26:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:56,772 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-04 09:26:56,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 09:26:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-04 09:26:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-04 09:26:56,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:56,773 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:56,773 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:56,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:56,774 INFO L82 PathProgramCache]: Analyzing trace with hash 85777346, now seen corresponding path program 47 times [2018-10-04 09:26:56,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:56,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:56,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:56,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:56,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:58,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:58,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:58,435 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:26:58,658 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 09:26:58,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:58,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:26:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:58,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:26:58,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 09:26:58,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 09:26:58,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 09:26:58,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-10-04 09:26:58,746 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 50 states. [2018-10-04 09:26:58,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:26:58,896 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-04 09:26:58,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 09:26:58,897 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-10-04 09:26:58,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:26:58,898 INFO L225 Difference]: With dead ends: 201 [2018-10-04 09:26:58,898 INFO L226 Difference]: Without dead ends: 199 [2018-10-04 09:26:58,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-10-04 09:26:58,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-04 09:26:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-04 09:26:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-04 09:26:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-04 09:26:58,903 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 194 [2018-10-04 09:26:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:26:58,904 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-04 09:26:58,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 09:26:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-04 09:26:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-04 09:26:58,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:26:58,905 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-10-04 09:26:58,905 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:26:58,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:26:58,906 INFO L82 PathProgramCache]: Analyzing trace with hash 305559660, now seen corresponding path program 48 times [2018-10-04 09:26:58,906 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:26:58,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:26:58,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:58,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:26:58,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:26:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:26:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:26:59,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:26:59,884 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:26:59,903 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:26:59,967 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 09:26:59,968 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:26:59,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:00,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:00,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 09:27:00,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 09:27:00,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 09:27:00,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-10-04 09:27:00,031 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 51 states. [2018-10-04 09:27:00,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:00,148 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-04 09:27:00,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 09:27:00,148 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-10-04 09:27:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:00,150 INFO L225 Difference]: With dead ends: 205 [2018-10-04 09:27:00,150 INFO L226 Difference]: Without dead ends: 203 [2018-10-04 09:27:00,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-10-04 09:27:00,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-04 09:27:00,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-04 09:27:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-04 09:27:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-04 09:27:00,153 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 198 [2018-10-04 09:27:00,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:00,154 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-04 09:27:00,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 09:27:00,154 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-04 09:27:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-04 09:27:00,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:00,155 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:00,155 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:00,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1971474410, now seen corresponding path program 49 times [2018-10-04 09:27:00,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:00,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:00,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:00,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:00,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:01,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:01,267 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:01,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:01,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:01,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:01,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 09:27:01,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 09:27:01,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 09:27:01,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-10-04 09:27:01,371 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 52 states. [2018-10-04 09:27:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:01,473 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-04 09:27:01,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 09:27:01,474 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-10-04 09:27:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:01,475 INFO L225 Difference]: With dead ends: 209 [2018-10-04 09:27:01,475 INFO L226 Difference]: Without dead ends: 207 [2018-10-04 09:27:01,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-10-04 09:27:01,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-04 09:27:01,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-04 09:27:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-04 09:27:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-04 09:27:01,479 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 202 [2018-10-04 09:27:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:01,479 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-04 09:27:01,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 09:27:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-04 09:27:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-04 09:27:01,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:01,480 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:01,481 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:01,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:01,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1750269248, now seen corresponding path program 50 times [2018-10-04 09:27:01,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:01,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:01,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:01,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:01,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:02,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:02,837 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:02,846 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:27:02,895 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:27:02,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:02,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:02,988 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:02,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 09:27:02,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 09:27:02,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 09:27:02,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-10-04 09:27:02,990 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 53 states. [2018-10-04 09:27:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:03,455 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-04 09:27:03,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 09:27:03,455 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-10-04 09:27:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:03,460 INFO L225 Difference]: With dead ends: 213 [2018-10-04 09:27:03,460 INFO L226 Difference]: Without dead ends: 211 [2018-10-04 09:27:03,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-10-04 09:27:03,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-04 09:27:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-04 09:27:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-04 09:27:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-04 09:27:03,464 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 206 [2018-10-04 09:27:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:03,464 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-04 09:27:03,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 09:27:03,465 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-04 09:27:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-04 09:27:03,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:03,469 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:03,470 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:03,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash 37679210, now seen corresponding path program 51 times [2018-10-04 09:27:03,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:03,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:03,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:03,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:03,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:04,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:04,734 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:04,744 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:27:04,820 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-04 09:27:04,820 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:04,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:04,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:04,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 09:27:04,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 09:27:04,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 09:27:04,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-10-04 09:27:04,911 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 54 states. [2018-10-04 09:27:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:05,094 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-04 09:27:05,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 09:27:05,094 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-10-04 09:27:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:05,096 INFO L225 Difference]: With dead ends: 217 [2018-10-04 09:27:05,096 INFO L226 Difference]: Without dead ends: 215 [2018-10-04 09:27:05,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-10-04 09:27:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-04 09:27:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-04 09:27:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-04 09:27:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-04 09:27:05,100 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 210 [2018-10-04 09:27:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:05,100 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-04 09:27:05,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 09:27:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-04 09:27:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-04 09:27:05,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:05,101 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:05,102 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:05,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:05,102 INFO L82 PathProgramCache]: Analyzing trace with hash -781321964, now seen corresponding path program 52 times [2018-10-04 09:27:05,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:05,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:05,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:05,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:05,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:06,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:06,243 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:06,252 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:27:06,294 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:27:06,294 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:06,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:06,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:06,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 09:27:06,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 09:27:06,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 09:27:06,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-10-04 09:27:06,382 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 55 states. [2018-10-04 09:27:06,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:06,513 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-04 09:27:06,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 09:27:06,513 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-10-04 09:27:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:06,515 INFO L225 Difference]: With dead ends: 221 [2018-10-04 09:27:06,515 INFO L226 Difference]: Without dead ends: 219 [2018-10-04 09:27:06,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-10-04 09:27:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-04 09:27:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-04 09:27:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-04 09:27:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-04 09:27:06,520 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 214 [2018-10-04 09:27:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:06,520 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-04 09:27:06,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 09:27:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-04 09:27:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-04 09:27:06,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:06,522 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:06,522 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:06,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:06,522 INFO L82 PathProgramCache]: Analyzing trace with hash -348873538, now seen corresponding path program 53 times [2018-10-04 09:27:06,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:06,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:06,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:06,523 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:06,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:07,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:07,969 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 [2018-10-04 09:27:07,976 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:27:08,068 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-04 09:27:08,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:08,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:08,136 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:08,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 09:27:08,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 09:27:08,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 09:27:08,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-10-04 09:27:08,137 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 56 states. [2018-10-04 09:27:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:08,226 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-04 09:27:08,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 09:27:08,226 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-10-04 09:27:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:08,227 INFO L225 Difference]: With dead ends: 225 [2018-10-04 09:27:08,228 INFO L226 Difference]: Without dead ends: 223 [2018-10-04 09:27:08,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-10-04 09:27:08,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-04 09:27:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-04 09:27:08,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-04 09:27:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-04 09:27:08,231 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 218 [2018-10-04 09:27:08,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:08,231 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-04 09:27:08,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 09:27:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-04 09:27:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-04 09:27:08,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:08,232 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:08,233 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:08,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1269998744, now seen corresponding path program 54 times [2018-10-04 09:27:08,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:08,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:08,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:08,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:08,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:09,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:09,387 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:09,394 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:27:09,462 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 09:27:09,463 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:09,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:09,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:09,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 09:27:09,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 09:27:09,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 09:27:09,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-10-04 09:27:09,561 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 57 states. [2018-10-04 09:27:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:09,781 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-04 09:27:09,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 09:27:09,781 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-10-04 09:27:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:09,783 INFO L225 Difference]: With dead ends: 229 [2018-10-04 09:27:09,783 INFO L226 Difference]: Without dead ends: 227 [2018-10-04 09:27:09,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-10-04 09:27:09,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-04 09:27:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-04 09:27:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-04 09:27:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-04 09:27:09,788 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 222 [2018-10-04 09:27:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:09,788 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-04 09:27:09,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 09:27:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-04 09:27:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-04 09:27:09,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:09,789 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:09,790 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:09,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:09,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1338854126, now seen corresponding path program 55 times [2018-10-04 09:27:09,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:09,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:09,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:09,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:09,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:10,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:10,954 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:10,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:11,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:11,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:11,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 09:27:11,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 09:27:11,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 09:27:11,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-10-04 09:27:11,098 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 58 states. [2018-10-04 09:27:11,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:11,992 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-04 09:27:11,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 09:27:11,993 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-10-04 09:27:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:11,995 INFO L225 Difference]: With dead ends: 233 [2018-10-04 09:27:11,995 INFO L226 Difference]: Without dead ends: 231 [2018-10-04 09:27:11,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-10-04 09:27:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-04 09:27:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-04 09:27:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-04 09:27:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-04 09:27:11,999 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 226 [2018-10-04 09:27:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:11,999 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-04 09:27:11,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 09:27:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-04 09:27:12,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-04 09:27:12,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:12,001 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:12,001 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:12,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:12,001 INFO L82 PathProgramCache]: Analyzing trace with hash 555690428, now seen corresponding path program 56 times [2018-10-04 09:27:12,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:12,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:12,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:12,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:12,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:13,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:13,684 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:13,691 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:27:13,745 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:27:13,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:13,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:13,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:13,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 09:27:13,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 09:27:13,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 09:27:13,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-10-04 09:27:13,823 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 59 states. [2018-10-04 09:27:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:13,961 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-04 09:27:13,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 09:27:13,961 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-10-04 09:27:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:13,963 INFO L225 Difference]: With dead ends: 237 [2018-10-04 09:27:13,963 INFO L226 Difference]: Without dead ends: 235 [2018-10-04 09:27:13,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-10-04 09:27:13,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-04 09:27:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-04 09:27:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-04 09:27:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-04 09:27:13,966 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 230 [2018-10-04 09:27:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:13,967 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-04 09:27:13,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 09:27:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-04 09:27:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-04 09:27:13,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:13,968 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:13,968 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:13,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:13,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1475528346, now seen corresponding path program 57 times [2018-10-04 09:27:13,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:13,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:13,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:13,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:13,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:15,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:15,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:15,378 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:27:15,459 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-04 09:27:15,459 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:15,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:15,563 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:15,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 09:27:15,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 09:27:15,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 09:27:15,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-10-04 09:27:15,565 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 60 states. [2018-10-04 09:27:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:15,780 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-04 09:27:15,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 09:27:15,780 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-10-04 09:27:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:15,782 INFO L225 Difference]: With dead ends: 241 [2018-10-04 09:27:15,782 INFO L226 Difference]: Without dead ends: 239 [2018-10-04 09:27:15,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-10-04 09:27:15,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-04 09:27:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-04 09:27:15,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-04 09:27:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-04 09:27:15,786 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 234 [2018-10-04 09:27:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:15,786 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-04 09:27:15,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 09:27:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-04 09:27:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-04 09:27:15,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:15,787 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:15,787 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:15,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:15,788 INFO L82 PathProgramCache]: Analyzing trace with hash -457743344, now seen corresponding path program 58 times [2018-10-04 09:27:15,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:15,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:15,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:15,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:15,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:17,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:17,147 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:17,157 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:27:17,215 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:27:17,216 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:17,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:17,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:17,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 09:27:17,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 09:27:17,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 09:27:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-10-04 09:27:17,315 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 61 states. [2018-10-04 09:27:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:17,568 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-04 09:27:17,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 09:27:17,569 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-10-04 09:27:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:17,570 INFO L225 Difference]: With dead ends: 245 [2018-10-04 09:27:17,570 INFO L226 Difference]: Without dead ends: 243 [2018-10-04 09:27:17,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-10-04 09:27:17,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-04 09:27:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-04 09:27:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-04 09:27:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-04 09:27:17,573 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 238 [2018-10-04 09:27:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:17,573 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-04 09:27:17,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 09:27:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-04 09:27:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-04 09:27:17,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:17,574 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:17,575 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:17,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:17,575 INFO L82 PathProgramCache]: Analyzing trace with hash 362293690, now seen corresponding path program 59 times [2018-10-04 09:27:17,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:17,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:17,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:17,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:17,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:18,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:18,995 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:19,003 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:27:19,092 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-04 09:27:19,092 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:19,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:19,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:19,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 09:27:19,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 09:27:19,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 09:27:19,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-10-04 09:27:19,166 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 62 states. [2018-10-04 09:27:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:19,319 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-04 09:27:19,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 09:27:19,319 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-10-04 09:27:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:19,321 INFO L225 Difference]: With dead ends: 249 [2018-10-04 09:27:19,321 INFO L226 Difference]: Without dead ends: 247 [2018-10-04 09:27:19,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-10-04 09:27:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-04 09:27:19,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-04 09:27:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-04 09:27:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-04 09:27:19,325 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 242 [2018-10-04 09:27:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:19,326 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-04 09:27:19,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 09:27:19,326 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-04 09:27:19,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-04 09:27:19,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:19,327 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:19,328 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:19,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:19,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1209398684, now seen corresponding path program 60 times [2018-10-04 09:27:19,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:19,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:19,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:19,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:19,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:20,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:20,874 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:20,882 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:27:20,960 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-04 09:27:20,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:20,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:21,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:21,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 09:27:21,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 09:27:21,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 09:27:21,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-10-04 09:27:21,033 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 63 states. [2018-10-04 09:27:21,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:21,194 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-04 09:27:21,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 09:27:21,194 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-10-04 09:27:21,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:21,196 INFO L225 Difference]: With dead ends: 253 [2018-10-04 09:27:21,196 INFO L226 Difference]: Without dead ends: 251 [2018-10-04 09:27:21,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-10-04 09:27:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-04 09:27:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-04 09:27:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-04 09:27:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-04 09:27:21,200 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 246 [2018-10-04 09:27:21,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:21,200 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-04 09:27:21,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 09:27:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-04 09:27:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-04 09:27:21,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:21,201 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:21,201 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:21,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:21,202 INFO L82 PathProgramCache]: Analyzing trace with hash 665290254, now seen corresponding path program 61 times [2018-10-04 09:27:21,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:21,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:21,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:21,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:21,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:23,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:23,118 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:23,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:23,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:23,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:23,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 09:27:23,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 09:27:23,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 09:27:23,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-10-04 09:27:23,271 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 64 states. [2018-10-04 09:27:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:23,456 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-04 09:27:23,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 09:27:23,457 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-10-04 09:27:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:23,458 INFO L225 Difference]: With dead ends: 257 [2018-10-04 09:27:23,458 INFO L226 Difference]: Without dead ends: 255 [2018-10-04 09:27:23,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-10-04 09:27:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-04 09:27:23,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-04 09:27:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-04 09:27:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-04 09:27:23,461 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 250 [2018-10-04 09:27:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:23,461 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-04 09:27:23,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 09:27:23,461 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-04 09:27:23,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-04 09:27:23,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:23,462 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:23,463 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:23,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:23,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1066081464, now seen corresponding path program 62 times [2018-10-04 09:27:23,463 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:23,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:23,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:23,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:23,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:24,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:24,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:24,973 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:27:25,026 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:27:25,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:25,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:25,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:25,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 09:27:25,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 09:27:25,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 09:27:25,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-10-04 09:27:25,100 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 65 states. [2018-10-04 09:27:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:25,261 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-04 09:27:25,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 09:27:25,262 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-10-04 09:27:25,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:25,263 INFO L225 Difference]: With dead ends: 261 [2018-10-04 09:27:25,263 INFO L226 Difference]: Without dead ends: 259 [2018-10-04 09:27:25,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-10-04 09:27:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-04 09:27:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-04 09:27:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-04 09:27:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-04 09:27:25,267 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 254 [2018-10-04 09:27:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:25,267 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-04 09:27:25,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 09:27:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-04 09:27:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-04 09:27:25,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:25,269 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:25,269 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:25,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:25,269 INFO L82 PathProgramCache]: Analyzing trace with hash -116437406, now seen corresponding path program 63 times [2018-10-04 09:27:25,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:25,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:25,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:25,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:25,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:26,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:26,849 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:26,860 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:27:26,961 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-04 09:27:26,961 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:26,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:27,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:27,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 09:27:27,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 09:27:27,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 09:27:27,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-10-04 09:27:27,038 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 66 states. [2018-10-04 09:27:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:27,230 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-04 09:27:27,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 09:27:27,230 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-10-04 09:27:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:27,232 INFO L225 Difference]: With dead ends: 265 [2018-10-04 09:27:27,232 INFO L226 Difference]: Without dead ends: 263 [2018-10-04 09:27:27,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-10-04 09:27:27,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-04 09:27:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-04 09:27:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-04 09:27:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-10-04 09:27:27,236 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 258 [2018-10-04 09:27:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:27,236 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-10-04 09:27:27,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 09:27:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-10-04 09:27:27,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-04 09:27:27,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:27,238 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:27,238 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:27,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 208575244, now seen corresponding path program 64 times [2018-10-04 09:27:27,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:27,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:27,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:27,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:29,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:29,467 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:29,475 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:27:29,523 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:27:29,524 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:29,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:29,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:29,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 09:27:29,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 09:27:29,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 09:27:29,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-10-04 09:27:29,621 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 67 states. [2018-10-04 09:27:29,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:29,832 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-04 09:27:29,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 09:27:29,832 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-10-04 09:27:29,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:29,834 INFO L225 Difference]: With dead ends: 269 [2018-10-04 09:27:29,834 INFO L226 Difference]: Without dead ends: 267 [2018-10-04 09:27:29,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-10-04 09:27:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-04 09:27:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-10-04 09:27:29,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-04 09:27:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-10-04 09:27:29,839 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 262 [2018-10-04 09:27:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:29,839 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-10-04 09:27:29,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 09:27:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-10-04 09:27:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-04 09:27:29,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:29,841 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:29,841 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:29,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:29,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1868332362, now seen corresponding path program 65 times [2018-10-04 09:27:29,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:29,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:29,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:29,842 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:29,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:31,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:31,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:31,525 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:27:31,623 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-04 09:27:31,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:31,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:31,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:31,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 09:27:31,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 09:27:31,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 09:27:31,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-10-04 09:27:31,716 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 68 states. [2018-10-04 09:27:31,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:31,881 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-04 09:27:31,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 09:27:31,882 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-10-04 09:27:31,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:31,883 INFO L225 Difference]: With dead ends: 273 [2018-10-04 09:27:31,884 INFO L226 Difference]: Without dead ends: 271 [2018-10-04 09:27:31,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-10-04 09:27:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-04 09:27:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-04 09:27:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-04 09:27:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-04 09:27:31,889 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 266 [2018-10-04 09:27:31,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:31,889 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-04 09:27:31,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 09:27:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-04 09:27:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-04 09:27:31,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:31,891 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:31,891 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:31,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:31,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1687648928, now seen corresponding path program 66 times [2018-10-04 09:27:31,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:31,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:31,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:31,892 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:31,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:33,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:33,917 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:33,924 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:27:34,016 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-04 09:27:34,016 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:34,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:34,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:34,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 09:27:34,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 09:27:34,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 09:27:34,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-10-04 09:27:34,105 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 69 states. [2018-10-04 09:27:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:34,287 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-04 09:27:34,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 09:27:34,287 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-10-04 09:27:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:34,289 INFO L225 Difference]: With dead ends: 277 [2018-10-04 09:27:34,289 INFO L226 Difference]: Without dead ends: 275 [2018-10-04 09:27:34,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-10-04 09:27:34,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-04 09:27:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-10-04 09:27:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-04 09:27:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-10-04 09:27:34,292 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 270 [2018-10-04 09:27:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:34,292 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-10-04 09:27:34,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 09:27:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-10-04 09:27:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-04 09:27:34,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:34,294 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:34,294 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:34,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:34,295 INFO L82 PathProgramCache]: Analyzing trace with hash -516414710, now seen corresponding path program 67 times [2018-10-04 09:27:34,295 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:34,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:34,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:34,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:34,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:36,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:36,044 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:36,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:36,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:36,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:36,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 09:27:36,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 09:27:36,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 09:27:36,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-10-04 09:27:36,187 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 70 states. [2018-10-04 09:27:36,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:36,422 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-10-04 09:27:36,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 09:27:36,422 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-10-04 09:27:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:36,424 INFO L225 Difference]: With dead ends: 281 [2018-10-04 09:27:36,424 INFO L226 Difference]: Without dead ends: 279 [2018-10-04 09:27:36,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-10-04 09:27:36,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-04 09:27:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-10-04 09:27:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-04 09:27:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-10-04 09:27:36,428 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 274 [2018-10-04 09:27:36,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:36,428 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-10-04 09:27:36,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 09:27:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-10-04 09:27:36,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-04 09:27:36,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:36,430 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:36,430 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:36,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:36,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1431100340, now seen corresponding path program 68 times [2018-10-04 09:27:36,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:36,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:36,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:36,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:36,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:38,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:38,547 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:38,555 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:27:38,607 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:27:38,607 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:38,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:38,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:38,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 09:27:38,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 09:27:38,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 09:27:38,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-10-04 09:27:38,694 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 71 states. [2018-10-04 09:27:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:38,924 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-04 09:27:38,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 09:27:38,924 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-10-04 09:27:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:38,926 INFO L225 Difference]: With dead ends: 285 [2018-10-04 09:27:38,926 INFO L226 Difference]: Without dead ends: 283 [2018-10-04 09:27:38,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-10-04 09:27:38,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-04 09:27:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-10-04 09:27:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-04 09:27:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-10-04 09:27:38,930 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 278 [2018-10-04 09:27:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:38,930 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-10-04 09:27:38,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 09:27:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-10-04 09:27:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-04 09:27:38,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:38,931 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:38,931 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:38,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:38,932 INFO L82 PathProgramCache]: Analyzing trace with hash -912183458, now seen corresponding path program 69 times [2018-10-04 09:27:38,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:38,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:38,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:38,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:38,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:40,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:40,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:40,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:27:40,821 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-04 09:27:40,821 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:40,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:40,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:40,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 09:27:40,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 09:27:40,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 09:27:40,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-10-04 09:27:40,923 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 72 states. [2018-10-04 09:27:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:41,100 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-10-04 09:27:41,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 09:27:41,101 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-10-04 09:27:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:41,103 INFO L225 Difference]: With dead ends: 289 [2018-10-04 09:27:41,103 INFO L226 Difference]: Without dead ends: 287 [2018-10-04 09:27:41,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-10-04 09:27:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-04 09:27:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-10-04 09:27:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-04 09:27:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-10-04 09:27:41,107 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 282 [2018-10-04 09:27:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:41,107 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-10-04 09:27:41,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 09:27:41,107 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-10-04 09:27:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-04 09:27:41,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:41,108 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:41,108 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:41,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:41,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1896899064, now seen corresponding path program 70 times [2018-10-04 09:27:41,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:41,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:41,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:41,109 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:41,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:42,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:42,928 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:42,934 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:27:42,993 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:27:42,993 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:42,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:43,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:43,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 09:27:43,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 09:27:43,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 09:27:43,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-10-04 09:27:43,075 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 73 states. [2018-10-04 09:27:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:43,260 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-10-04 09:27:43,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 09:27:43,260 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-10-04 09:27:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:43,261 INFO L225 Difference]: With dead ends: 293 [2018-10-04 09:27:43,261 INFO L226 Difference]: Without dead ends: 291 [2018-10-04 09:27:43,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-10-04 09:27:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-04 09:27:43,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-10-04 09:27:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-10-04 09:27:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-10-04 09:27:43,265 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 286 [2018-10-04 09:27:43,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:43,265 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-10-04 09:27:43,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 09:27:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-10-04 09:27:43,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-04 09:27:43,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:43,267 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:43,267 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:43,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:43,268 INFO L82 PathProgramCache]: Analyzing trace with hash 347252658, now seen corresponding path program 71 times [2018-10-04 09:27:43,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:43,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:43,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:43,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:43,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:45,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:45,271 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:45,278 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:27:45,393 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-04 09:27:45,393 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:45,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:45,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:45,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 09:27:45,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 09:27:45,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 09:27:45,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-10-04 09:27:45,498 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 74 states. [2018-10-04 09:27:45,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:45,756 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-10-04 09:27:45,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 09:27:45,756 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-10-04 09:27:45,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:45,758 INFO L225 Difference]: With dead ends: 297 [2018-10-04 09:27:45,758 INFO L226 Difference]: Without dead ends: 295 [2018-10-04 09:27:45,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-10-04 09:27:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-10-04 09:27:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-10-04 09:27:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-04 09:27:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-10-04 09:27:45,762 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 290 [2018-10-04 09:27:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:45,762 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-10-04 09:27:45,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 09:27:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-10-04 09:27:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-04 09:27:45,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:45,764 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:45,764 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:45,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:45,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1994077092, now seen corresponding path program 72 times [2018-10-04 09:27:45,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:45,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:45,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:45,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:45,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:47,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:47,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:47,746 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:27:47,856 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-04 09:27:47,856 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:47,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:47,945 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:47,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 09:27:47,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 09:27:47,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 09:27:47,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-10-04 09:27:47,947 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 75 states. [2018-10-04 09:27:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:48,242 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-10-04 09:27:48,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 09:27:48,242 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-10-04 09:27:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:48,243 INFO L225 Difference]: With dead ends: 301 [2018-10-04 09:27:48,243 INFO L226 Difference]: Without dead ends: 299 [2018-10-04 09:27:48,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-10-04 09:27:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-04 09:27:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-10-04 09:27:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-04 09:27:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-10-04 09:27:48,246 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 294 [2018-10-04 09:27:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:48,246 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-10-04 09:27:48,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 09:27:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-10-04 09:27:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-04 09:27:48,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:48,247 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:48,247 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:48,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:48,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2034273286, now seen corresponding path program 73 times [2018-10-04 09:27:48,248 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:48,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:48,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:48,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:48,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:50,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:50,271 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:50,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:50,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:50,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:50,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 09:27:50,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 09:27:50,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 09:27:50,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-10-04 09:27:50,429 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 76 states. [2018-10-04 09:27:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:50,708 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-10-04 09:27:50,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 09:27:50,709 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-10-04 09:27:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:50,711 INFO L225 Difference]: With dead ends: 305 [2018-10-04 09:27:50,711 INFO L226 Difference]: Without dead ends: 303 [2018-10-04 09:27:50,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-10-04 09:27:50,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-04 09:27:50,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-10-04 09:27:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-10-04 09:27:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-10-04 09:27:50,715 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 298 [2018-10-04 09:27:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:50,715 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-10-04 09:27:50,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 09:27:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-10-04 09:27:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-04 09:27:50,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:50,716 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:50,717 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:50,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:50,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1891657392, now seen corresponding path program 74 times [2018-10-04 09:27:50,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:50,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:50,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:50,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:27:50,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:52,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:52,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:52,829 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:27:52,887 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:27:52,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:52,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:53,016 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:53,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 09:27:53,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 09:27:53,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 09:27:53,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-10-04 09:27:53,018 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 77 states. [2018-10-04 09:27:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:53,304 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-10-04 09:27:53,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 09:27:53,304 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-10-04 09:27:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:53,305 INFO L225 Difference]: With dead ends: 309 [2018-10-04 09:27:53,305 INFO L226 Difference]: Without dead ends: 307 [2018-10-04 09:27:53,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-10-04 09:27:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-04 09:27:53,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-10-04 09:27:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-10-04 09:27:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-10-04 09:27:53,308 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 302 [2018-10-04 09:27:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:53,308 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-10-04 09:27:53,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 09:27:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-10-04 09:27:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-04 09:27:53,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:53,309 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:53,309 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:53,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:53,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1709253542, now seen corresponding path program 75 times [2018-10-04 09:27:53,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:53,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:53,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:53,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:53,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:55,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:55,501 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:55,508 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:27:55,632 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-04 09:27:55,632 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:55,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:27:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:55,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:27:55,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 09:27:55,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 09:27:55,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 09:27:55,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-10-04 09:27:55,739 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 78 states. [2018-10-04 09:27:56,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:27:56,180 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-04 09:27:56,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 09:27:56,180 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-10-04 09:27:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:27:56,182 INFO L225 Difference]: With dead ends: 313 [2018-10-04 09:27:56,182 INFO L226 Difference]: Without dead ends: 311 [2018-10-04 09:27:56,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-10-04 09:27:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-10-04 09:27:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-10-04 09:27:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-04 09:27:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-10-04 09:27:56,186 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 306 [2018-10-04 09:27:56,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:27:56,187 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-10-04 09:27:56,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 09:27:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-10-04 09:27:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-04 09:27:56,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:27:56,189 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2018-10-04 09:27:56,189 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:27:56,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:27:56,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1586916612, now seen corresponding path program 76 times [2018-10-04 09:27:56,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:27:56,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:27:56,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:56,190 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:27:56,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:27:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:27:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:27:59,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:27:59,878 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:27:59,886 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:27:59,949 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:27:59,949 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:27:59,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:00,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:00,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 09:28:00,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 09:28:00,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 09:28:00,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-10-04 09:28:00,039 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 79 states. [2018-10-04 09:28:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:00,272 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-10-04 09:28:00,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 09:28:00,272 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-10-04 09:28:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:00,274 INFO L225 Difference]: With dead ends: 317 [2018-10-04 09:28:00,274 INFO L226 Difference]: Without dead ends: 315 [2018-10-04 09:28:00,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-10-04 09:28:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-04 09:28:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-10-04 09:28:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-10-04 09:28:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-10-04 09:28:00,279 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 310 [2018-10-04 09:28:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:00,279 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-10-04 09:28:00,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 09:28:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-10-04 09:28:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-04 09:28:00,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:00,280 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:00,280 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:00,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:00,281 INFO L82 PathProgramCache]: Analyzing trace with hash 102865070, now seen corresponding path program 77 times [2018-10-04 09:28:00,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:00,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:00,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:00,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:00,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:02,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:02,505 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:02,511 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:28:02,625 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-04 09:28:02,625 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:02,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:02,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:02,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 09:28:02,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 09:28:02,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 09:28:02,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-10-04 09:28:02,725 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 80 states. [2018-10-04 09:28:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:02,888 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-10-04 09:28:02,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 09:28:02,888 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-10-04 09:28:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:02,890 INFO L225 Difference]: With dead ends: 321 [2018-10-04 09:28:02,891 INFO L226 Difference]: Without dead ends: 319 [2018-10-04 09:28:02,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-10-04 09:28:02,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-04 09:28:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-10-04 09:28:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-04 09:28:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-10-04 09:28:02,894 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 314 [2018-10-04 09:28:02,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:02,894 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-10-04 09:28:02,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 09:28:02,894 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-10-04 09:28:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-04 09:28:02,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:02,895 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:02,895 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:02,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:02,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670360, now seen corresponding path program 78 times [2018-10-04 09:28:02,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:02,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:02,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:02,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:02,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:05,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:05,415 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:05,422 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:28:05,537 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-04 09:28:05,537 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:05,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:05,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:05,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 09:28:05,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 09:28:05,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 09:28:05,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-10-04 09:28:05,642 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 81 states. [2018-10-04 09:28:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:05,828 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-10-04 09:28:05,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 09:28:05,828 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-10-04 09:28:05,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:05,830 INFO L225 Difference]: With dead ends: 325 [2018-10-04 09:28:05,830 INFO L226 Difference]: Without dead ends: 323 [2018-10-04 09:28:05,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-10-04 09:28:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-04 09:28:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-10-04 09:28:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-04 09:28:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-10-04 09:28:05,833 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 318 [2018-10-04 09:28:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:05,833 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-10-04 09:28:05,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 09:28:05,833 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-10-04 09:28:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-04 09:28:05,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:05,834 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:05,835 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:05,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash 941408514, now seen corresponding path program 79 times [2018-10-04 09:28:05,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:05,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:05,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:05,836 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:05,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:08,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:08,163 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:08,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:28:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:08,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:08,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:08,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 09:28:08,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 09:28:08,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 09:28:08,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-10-04 09:28:08,331 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 82 states. [2018-10-04 09:28:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:08,514 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-10-04 09:28:08,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 09:28:08,514 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-10-04 09:28:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:08,515 INFO L225 Difference]: With dead ends: 329 [2018-10-04 09:28:08,516 INFO L226 Difference]: Without dead ends: 327 [2018-10-04 09:28:08,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-10-04 09:28:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-04 09:28:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-10-04 09:28:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-04 09:28:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-10-04 09:28:08,518 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 322 [2018-10-04 09:28:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:08,519 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-10-04 09:28:08,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 09:28:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-10-04 09:28:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-04 09:28:08,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:08,520 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:08,520 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:08,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:08,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1279376812, now seen corresponding path program 80 times [2018-10-04 09:28:08,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:08,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:08,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:08,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:28:08,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:11,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:11,167 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:11,175 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:28:11,236 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:28:11,236 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:11,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:11,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:11,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 09:28:11,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 09:28:11,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 09:28:11,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-10-04 09:28:11,337 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 83 states. [2018-10-04 09:28:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:11,661 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-04 09:28:11,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 09:28:11,661 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-10-04 09:28:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:11,663 INFO L225 Difference]: With dead ends: 333 [2018-10-04 09:28:11,663 INFO L226 Difference]: Without dead ends: 331 [2018-10-04 09:28:11,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-10-04 09:28:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-04 09:28:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-10-04 09:28:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-04 09:28:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-10-04 09:28:11,666 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 326 [2018-10-04 09:28:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:11,666 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-10-04 09:28:11,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 09:28:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-10-04 09:28:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-04 09:28:11,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:11,667 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:11,667 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:11,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:11,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1763420842, now seen corresponding path program 81 times [2018-10-04 09:28:11,668 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:11,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:11,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:11,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:11,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:14,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:14,289 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:14,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:28:14,422 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-04 09:28:14,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:14,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:14,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:14,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 09:28:14,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 09:28:14,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 09:28:14,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-10-04 09:28:14,539 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 84 states. [2018-10-04 09:28:14,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:14,790 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-10-04 09:28:14,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 09:28:14,791 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-10-04 09:28:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:14,793 INFO L225 Difference]: With dead ends: 337 [2018-10-04 09:28:14,793 INFO L226 Difference]: Without dead ends: 335 [2018-10-04 09:28:14,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-10-04 09:28:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-10-04 09:28:14,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-10-04 09:28:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-04 09:28:14,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-10-04 09:28:14,796 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 330 [2018-10-04 09:28:14,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:14,796 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-10-04 09:28:14,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 09:28:14,797 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-10-04 09:28:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-04 09:28:14,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:14,798 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:14,798 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:14,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:14,798 INFO L82 PathProgramCache]: Analyzing trace with hash 431949824, now seen corresponding path program 82 times [2018-10-04 09:28:14,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:14,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:14,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:14,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:14,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:17,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:17,267 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:17,274 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:28:17,341 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:28:17,341 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:17,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:17,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:17,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 09:28:17,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 09:28:17,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 09:28:17,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-10-04 09:28:17,497 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 85 states. [2018-10-04 09:28:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:17,848 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-10-04 09:28:17,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 09:28:17,848 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-10-04 09:28:17,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:17,850 INFO L225 Difference]: With dead ends: 341 [2018-10-04 09:28:17,850 INFO L226 Difference]: Without dead ends: 339 [2018-10-04 09:28:17,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-10-04 09:28:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-04 09:28:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-10-04 09:28:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-04 09:28:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-10-04 09:28:17,854 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 334 [2018-10-04 09:28:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:17,854 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-10-04 09:28:17,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 09:28:17,854 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-10-04 09:28:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-04 09:28:17,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:17,856 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:17,856 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:17,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:17,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1967936938, now seen corresponding path program 83 times [2018-10-04 09:28:17,856 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:17,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:17,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:17,857 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:17,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:20,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:20,787 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:20,805 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:28:20,937 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-04 09:28:20,937 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:20,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:21,045 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:21,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 09:28:21,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 09:28:21,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 09:28:21,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-10-04 09:28:21,047 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 86 states. [2018-10-04 09:28:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:21,323 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-10-04 09:28:21,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 09:28:21,323 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-10-04 09:28:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:21,325 INFO L225 Difference]: With dead ends: 345 [2018-10-04 09:28:21,325 INFO L226 Difference]: Without dead ends: 343 [2018-10-04 09:28:21,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-10-04 09:28:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-04 09:28:21,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-10-04 09:28:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-10-04 09:28:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-10-04 09:28:21,330 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 338 [2018-10-04 09:28:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:21,330 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-10-04 09:28:21,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 09:28:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-10-04 09:28:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-04 09:28:21,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:21,332 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:21,333 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:21,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:21,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2000241068, now seen corresponding path program 84 times [2018-10-04 09:28:21,333 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:21,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:21,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:21,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:21,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:24,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:24,109 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:24,118 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:28:24,288 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-04 09:28:24,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:24,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:24,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:24,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 09:28:24,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 09:28:24,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 09:28:24,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-10-04 09:28:24,397 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 87 states. [2018-10-04 09:28:24,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:24,750 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-10-04 09:28:24,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 09:28:24,751 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-10-04 09:28:24,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:24,753 INFO L225 Difference]: With dead ends: 349 [2018-10-04 09:28:24,753 INFO L226 Difference]: Without dead ends: 347 [2018-10-04 09:28:24,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-10-04 09:28:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-10-04 09:28:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-10-04 09:28:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-10-04 09:28:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-10-04 09:28:24,757 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 342 [2018-10-04 09:28:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:24,757 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-10-04 09:28:24,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 09:28:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-10-04 09:28:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-04 09:28:24,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:24,759 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:24,760 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:24,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:24,760 INFO L82 PathProgramCache]: Analyzing trace with hash 304660990, now seen corresponding path program 85 times [2018-10-04 09:28:24,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:24,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:24,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:24,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:24,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:27,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:27,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:27,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:28:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:27,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:27,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:27,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 09:28:27,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 09:28:27,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 09:28:27,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-10-04 09:28:27,694 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 88 states. [2018-10-04 09:28:28,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:28,038 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-10-04 09:28:28,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 09:28:28,039 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-10-04 09:28:28,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:28,040 INFO L225 Difference]: With dead ends: 353 [2018-10-04 09:28:28,040 INFO L226 Difference]: Without dead ends: 351 [2018-10-04 09:28:28,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-10-04 09:28:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-04 09:28:28,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-10-04 09:28:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-10-04 09:28:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-10-04 09:28:28,045 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 346 [2018-10-04 09:28:28,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:28,045 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-10-04 09:28:28,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 09:28:28,045 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-10-04 09:28:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-04 09:28:28,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:28,046 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:28,047 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:28,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:28,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1311563944, now seen corresponding path program 86 times [2018-10-04 09:28:28,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:28,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:28,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:28,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:28:28,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:31,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:31,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:31,159 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:28:31,228 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:28:31,228 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:31,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:31,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:31,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 09:28:31,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 09:28:31,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 09:28:31,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-10-04 09:28:31,344 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 89 states. [2018-10-04 09:28:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:31,731 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-10-04 09:28:31,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 09:28:31,731 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-10-04 09:28:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:31,733 INFO L225 Difference]: With dead ends: 357 [2018-10-04 09:28:31,734 INFO L226 Difference]: Without dead ends: 355 [2018-10-04 09:28:31,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-10-04 09:28:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-04 09:28:31,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-10-04 09:28:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-04 09:28:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-10-04 09:28:31,738 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 350 [2018-10-04 09:28:31,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:31,738 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-10-04 09:28:31,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 09:28:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-10-04 09:28:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-04 09:28:31,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:31,740 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:31,740 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:31,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:31,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744686, now seen corresponding path program 87 times [2018-10-04 09:28:31,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:31,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:31,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:31,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:31,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:34,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:34,760 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:34,769 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:28:34,910 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-04 09:28:34,910 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:34,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:35,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:35,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 09:28:35,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 09:28:35,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 09:28:35,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-10-04 09:28:35,038 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 90 states. [2018-10-04 09:28:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:35,242 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-04 09:28:35,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 09:28:35,243 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-10-04 09:28:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:35,245 INFO L225 Difference]: With dead ends: 361 [2018-10-04 09:28:35,245 INFO L226 Difference]: Without dead ends: 359 [2018-10-04 09:28:35,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-10-04 09:28:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-04 09:28:35,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-10-04 09:28:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-04 09:28:35,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-10-04 09:28:35,249 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 354 [2018-10-04 09:28:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:35,249 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-10-04 09:28:35,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 09:28:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-10-04 09:28:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-04 09:28:35,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:35,250 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:35,251 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:35,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:35,251 INFO L82 PathProgramCache]: Analyzing trace with hash 180711164, now seen corresponding path program 88 times [2018-10-04 09:28:35,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:35,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:35,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:35,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:35,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:38,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:38,115 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:38,121 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:28:38,204 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:28:38,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:38,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:38,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:38,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 09:28:38,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 09:28:38,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 09:28:38,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-10-04 09:28:38,348 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 91 states. [2018-10-04 09:28:38,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:38,753 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-10-04 09:28:38,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 09:28:38,753 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-10-04 09:28:38,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:38,756 INFO L225 Difference]: With dead ends: 365 [2018-10-04 09:28:38,756 INFO L226 Difference]: Without dead ends: 363 [2018-10-04 09:28:38,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-10-04 09:28:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-04 09:28:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-10-04 09:28:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-04 09:28:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-04 09:28:38,761 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 358 [2018-10-04 09:28:38,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:38,761 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-04 09:28:38,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 09:28:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-04 09:28:38,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-04 09:28:38,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:38,762 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:38,762 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:38,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:38,763 INFO L82 PathProgramCache]: Analyzing trace with hash 512679590, now seen corresponding path program 89 times [2018-10-04 09:28:38,763 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:38,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:38,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:38,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:38,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:41,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:41,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:41,853 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:28:41,997 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-04 09:28:41,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:42,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:42,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:42,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 09:28:42,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 09:28:42,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 09:28:42,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-10-04 09:28:42,118 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 92 states. [2018-10-04 09:28:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:42,546 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-10-04 09:28:42,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 09:28:42,546 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-10-04 09:28:42,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:42,548 INFO L225 Difference]: With dead ends: 369 [2018-10-04 09:28:42,549 INFO L226 Difference]: Without dead ends: 367 [2018-10-04 09:28:42,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-10-04 09:28:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-10-04 09:28:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-10-04 09:28:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-04 09:28:42,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-10-04 09:28:42,553 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 362 [2018-10-04 09:28:42,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:42,553 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-10-04 09:28:42,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 09:28:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-10-04 09:28:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-04 09:28:42,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:42,554 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:42,555 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:42,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:42,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1264871760, now seen corresponding path program 90 times [2018-10-04 09:28:42,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:42,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:42,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:42,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:42,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:45,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:45,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:45,853 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:28:46,038 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-04 09:28:46,038 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:46,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:46,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:46,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 09:28:46,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 09:28:46,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 09:28:46,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-10-04 09:28:46,159 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 93 states. [2018-10-04 09:28:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:46,556 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-10-04 09:28:46,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 09:28:46,556 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-10-04 09:28:46,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:46,558 INFO L225 Difference]: With dead ends: 373 [2018-10-04 09:28:46,558 INFO L226 Difference]: Without dead ends: 371 [2018-10-04 09:28:46,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-10-04 09:28:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-10-04 09:28:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-10-04 09:28:46,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-10-04 09:28:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-10-04 09:28:46,561 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 366 [2018-10-04 09:28:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:46,561 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-10-04 09:28:46,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 09:28:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-10-04 09:28:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-04 09:28:46,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:46,563 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:46,563 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:46,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:46,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1480552710, now seen corresponding path program 91 times [2018-10-04 09:28:46,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:46,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:46,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:46,565 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:46,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:49,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:49,813 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:49,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:28:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:49,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:50,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:50,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 09:28:50,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 09:28:50,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 09:28:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-10-04 09:28:50,016 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 94 states. [2018-10-04 09:28:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:50,483 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-10-04 09:28:50,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 09:28:50,484 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-10-04 09:28:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:50,486 INFO L225 Difference]: With dead ends: 377 [2018-10-04 09:28:50,486 INFO L226 Difference]: Without dead ends: 375 [2018-10-04 09:28:50,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-10-04 09:28:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-10-04 09:28:50,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-10-04 09:28:50,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-10-04 09:28:50,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-10-04 09:28:50,490 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 370 [2018-10-04 09:28:50,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:50,490 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-10-04 09:28:50,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 09:28:50,490 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-10-04 09:28:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-04 09:28:50,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:50,492 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:50,492 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:50,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:50,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1998729308, now seen corresponding path program 92 times [2018-10-04 09:28:50,492 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:50,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:50,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:50,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:28:50,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:54,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:54,302 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:54,309 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:28:54,381 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:28:54,381 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:54,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:54,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:54,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 09:28:54,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 09:28:54,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 09:28:54,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-10-04 09:28:54,508 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 95 states. [2018-10-04 09:28:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:54,977 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-10-04 09:28:54,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 09:28:54,977 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-10-04 09:28:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:54,979 INFO L225 Difference]: With dead ends: 381 [2018-10-04 09:28:54,979 INFO L226 Difference]: Without dead ends: 379 [2018-10-04 09:28:54,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-10-04 09:28:54,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-04 09:28:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-04 09:28:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-04 09:28:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-10-04 09:28:54,982 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 374 [2018-10-04 09:28:54,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:54,983 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-10-04 09:28:54,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 09:28:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-10-04 09:28:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-04 09:28:54,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:54,984 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:54,984 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:54,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:54,985 INFO L82 PathProgramCache]: Analyzing trace with hash 582396750, now seen corresponding path program 93 times [2018-10-04 09:28:54,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:54,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:54,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:54,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:54,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:28:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:58,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:28:58,158 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:28:58,166 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:28:58,320 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-04 09:28:58,320 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:28:58,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:28:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:28:58,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:28:58,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 09:28:58,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 09:28:58,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 09:28:58,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-10-04 09:28:58,450 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 96 states. [2018-10-04 09:28:58,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:28:58,714 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-10-04 09:28:58,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 09:28:58,715 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-10-04 09:28:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:28:58,717 INFO L225 Difference]: With dead ends: 385 [2018-10-04 09:28:58,717 INFO L226 Difference]: Without dead ends: 383 [2018-10-04 09:28:58,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-10-04 09:28:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-10-04 09:28:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-10-04 09:28:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-04 09:28:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-10-04 09:28:58,721 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 378 [2018-10-04 09:28:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:28:58,721 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-10-04 09:28:58,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 09:28:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-10-04 09:28:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-04 09:28:58,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:28:58,723 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2018-10-04 09:28:58,723 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:28:58,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:28:58,723 INFO L82 PathProgramCache]: Analyzing trace with hash 671457784, now seen corresponding path program 94 times [2018-10-04 09:28:58,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:28:58,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:28:58,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:58,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:28:58,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:28:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:02,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:02,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:02,309 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:29:02,386 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:29:02,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:02,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:02,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:02,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 09:29:02,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 09:29:02,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 09:29:02,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-10-04 09:29:02,534 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 97 states. [2018-10-04 09:29:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:03,015 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-10-04 09:29:03,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 09:29:03,016 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-10-04 09:29:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:03,017 INFO L225 Difference]: With dead ends: 389 [2018-10-04 09:29:03,017 INFO L226 Difference]: Without dead ends: 387 [2018-10-04 09:29:03,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-10-04 09:29:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-10-04 09:29:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-10-04 09:29:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-10-04 09:29:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-10-04 09:29:03,021 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 382 [2018-10-04 09:29:03,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:03,021 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-10-04 09:29:03,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 09:29:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-10-04 09:29:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-10-04 09:29:03,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:03,023 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:03,023 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:03,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:03,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1782920098, now seen corresponding path program 95 times [2018-10-04 09:29:03,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:03,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:03,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:03,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:03,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:06,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:06,619 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:06,629 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:29:06,796 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-04 09:29:06,796 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:06,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:06,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:06,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 09:29:06,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 09:29:06,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 09:29:06,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-10-04 09:29:06,929 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 98 states. [2018-10-04 09:29:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:07,431 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-10-04 09:29:07,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 09:29:07,431 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-10-04 09:29:07,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:07,433 INFO L225 Difference]: With dead ends: 393 [2018-10-04 09:29:07,433 INFO L226 Difference]: Without dead ends: 391 [2018-10-04 09:29:07,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-10-04 09:29:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-10-04 09:29:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-10-04 09:29:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-10-04 09:29:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-10-04 09:29:07,438 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 386 [2018-10-04 09:29:07,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:07,438 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-10-04 09:29:07,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 09:29:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-10-04 09:29:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-04 09:29:07,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:07,440 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:07,440 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:07,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:07,440 INFO L82 PathProgramCache]: Analyzing trace with hash 2041569356, now seen corresponding path program 96 times [2018-10-04 09:29:07,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:07,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:07,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:07,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:07,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:11,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:11,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:11,195 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:29:11,358 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-04 09:29:11,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:11,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:11,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:11,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 09:29:11,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 09:29:11,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 09:29:11,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-10-04 09:29:11,495 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 99 states. [2018-10-04 09:29:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:11,985 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-10-04 09:29:11,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 09:29:11,985 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-10-04 09:29:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:11,987 INFO L225 Difference]: With dead ends: 397 [2018-10-04 09:29:11,987 INFO L226 Difference]: Without dead ends: 395 [2018-10-04 09:29:11,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-10-04 09:29:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-10-04 09:29:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-10-04 09:29:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-10-04 09:29:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-10-04 09:29:11,992 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 390 [2018-10-04 09:29:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:11,992 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-10-04 09:29:11,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 09:29:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-10-04 09:29:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-04 09:29:11,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:11,994 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:11,994 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:11,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:11,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1161832438, now seen corresponding path program 97 times [2018-10-04 09:29:11,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:11,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:11,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:11,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:11,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:15,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:15,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:15,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:29:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:15,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:16,094 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:16,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 09:29:16,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 09:29:16,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 09:29:16,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-10-04 09:29:16,095 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 100 states. [2018-10-04 09:29:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:16,694 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-10-04 09:29:16,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 09:29:16,695 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-10-04 09:29:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:16,697 INFO L225 Difference]: With dead ends: 401 [2018-10-04 09:29:16,697 INFO L226 Difference]: Without dead ends: 399 [2018-10-04 09:29:16,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-10-04 09:29:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-10-04 09:29:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-10-04 09:29:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-10-04 09:29:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-10-04 09:29:16,702 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 394 [2018-10-04 09:29:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:16,702 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-10-04 09:29:16,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 09:29:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-10-04 09:29:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-04 09:29:16,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:16,704 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:16,704 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:16,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:16,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1162835296, now seen corresponding path program 98 times [2018-10-04 09:29:16,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:16,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:16,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:16,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:29:16,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:20,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:20,500 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:20,506 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:29:20,583 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:29:20,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:20,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:20,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:20,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 09:29:20,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 09:29:20,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 09:29:20,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-10-04 09:29:20,720 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 101 states. [2018-10-04 09:29:21,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:21,271 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-10-04 09:29:21,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 09:29:21,271 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-10-04 09:29:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:21,273 INFO L225 Difference]: With dead ends: 405 [2018-10-04 09:29:21,273 INFO L226 Difference]: Without dead ends: 403 [2018-10-04 09:29:21,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-10-04 09:29:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-10-04 09:29:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-10-04 09:29:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-10-04 09:29:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-10-04 09:29:21,279 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 398 [2018-10-04 09:29:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:21,279 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-10-04 09:29:21,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 09:29:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-10-04 09:29:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-04 09:29:21,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:21,281 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:21,282 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:21,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:21,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1719371850, now seen corresponding path program 99 times [2018-10-04 09:29:21,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:21,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:21,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:21,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:21,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:24,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:24,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:24,943 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:29:25,127 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-04 09:29:25,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:25,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:25,266 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:25,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 09:29:25,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 09:29:25,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 09:29:25,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-10-04 09:29:25,268 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 102 states. [2018-10-04 09:29:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:25,632 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-10-04 09:29:25,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 09:29:25,632 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-10-04 09:29:25,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:25,634 INFO L225 Difference]: With dead ends: 409 [2018-10-04 09:29:25,634 INFO L226 Difference]: Without dead ends: 407 [2018-10-04 09:29:25,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-10-04 09:29:25,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-04 09:29:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-10-04 09:29:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-10-04 09:29:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-10-04 09:29:25,639 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 402 [2018-10-04 09:29:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:25,640 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-10-04 09:29:25,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 09:29:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-10-04 09:29:25,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-04 09:29:25,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:25,642 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:25,642 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:25,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:25,643 INFO L82 PathProgramCache]: Analyzing trace with hash 333160692, now seen corresponding path program 100 times [2018-10-04 09:29:25,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:25,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:25,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:25,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:25,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:29,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:29,443 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:29,450 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:29:29,537 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:29:29,537 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:29,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:29,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:29,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 09:29:29,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 09:29:29,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 09:29:29,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-10-04 09:29:29,681 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 103 states. [2018-10-04 09:29:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:30,245 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-10-04 09:29:30,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 09:29:30,246 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-10-04 09:29:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:30,248 INFO L225 Difference]: With dead ends: 413 [2018-10-04 09:29:30,248 INFO L226 Difference]: Without dead ends: 411 [2018-10-04 09:29:30,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-10-04 09:29:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-10-04 09:29:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-10-04 09:29:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-10-04 09:29:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-10-04 09:29:30,253 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 406 [2018-10-04 09:29:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:30,254 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-10-04 09:29:30,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 09:29:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-10-04 09:29:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-04 09:29:30,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:30,255 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:30,255 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:30,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:30,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1825264798, now seen corresponding path program 101 times [2018-10-04 09:29:30,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:30,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:30,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:30,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:30,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:34,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:34,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:34,443 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:29:34,641 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-04 09:29:34,641 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:34,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:34,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:34,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 09:29:34,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 09:29:34,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 09:29:34,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-10-04 09:29:34,808 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 104 states. [2018-10-04 09:29:35,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:35,397 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-10-04 09:29:35,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 09:29:35,397 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-10-04 09:29:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:35,399 INFO L225 Difference]: With dead ends: 417 [2018-10-04 09:29:35,399 INFO L226 Difference]: Without dead ends: 415 [2018-10-04 09:29:35,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-10-04 09:29:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-10-04 09:29:35,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-10-04 09:29:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-10-04 09:29:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-10-04 09:29:35,403 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 410 [2018-10-04 09:29:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:35,404 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-10-04 09:29:35,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 09:29:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-10-04 09:29:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-04 09:29:35,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:35,406 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:35,406 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:35,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:35,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1710939320, now seen corresponding path program 102 times [2018-10-04 09:29:35,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:35,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:35,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:35,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:35,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:39,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:39,520 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:39,527 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:29:39,714 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-04 09:29:39,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:39,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:39,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:39,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 09:29:39,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 09:29:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 09:29:39,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-10-04 09:29:39,863 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 105 states. [2018-10-04 09:29:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:40,410 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-10-04 09:29:40,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 09:29:40,410 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-10-04 09:29:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:40,412 INFO L225 Difference]: With dead ends: 421 [2018-10-04 09:29:40,412 INFO L226 Difference]: Without dead ends: 419 [2018-10-04 09:29:40,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-10-04 09:29:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-10-04 09:29:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-10-04 09:29:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-10-04 09:29:40,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-10-04 09:29:40,418 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 414 [2018-10-04 09:29:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:40,418 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-10-04 09:29:40,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 09:29:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-10-04 09:29:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-10-04 09:29:40,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:40,421 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:40,421 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:40,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:40,421 INFO L82 PathProgramCache]: Analyzing trace with hash -486306574, now seen corresponding path program 103 times [2018-10-04 09:29:40,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:40,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:40,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:40,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:40,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:44,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:44,691 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:44,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:29:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:44,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:44,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:44,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 09:29:44,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 09:29:44,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 09:29:44,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-10-04 09:29:44,929 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 106 states. [2018-10-04 09:29:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:45,544 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-10-04 09:29:45,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 09:29:45,544 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-10-04 09:29:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:45,545 INFO L225 Difference]: With dead ends: 425 [2018-10-04 09:29:45,545 INFO L226 Difference]: Without dead ends: 423 [2018-10-04 09:29:45,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-10-04 09:29:45,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-10-04 09:29:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-10-04 09:29:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-10-04 09:29:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-10-04 09:29:45,550 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 418 [2018-10-04 09:29:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:45,551 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-10-04 09:29:45,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 09:29:45,551 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-10-04 09:29:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-10-04 09:29:45,552 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:45,552 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:45,552 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:45,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:45,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1308692892, now seen corresponding path program 104 times [2018-10-04 09:29:45,553 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:45,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:45,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:45,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:29:45,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:49,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:49,919 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:49,925 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:29:50,008 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:29:50,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:50,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:50,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:50,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 09:29:50,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 09:29:50,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 09:29:50,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-10-04 09:29:50,238 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 107 states. [2018-10-04 09:29:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:50,902 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-10-04 09:29:50,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 09:29:50,903 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-10-04 09:29:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:50,904 INFO L225 Difference]: With dead ends: 429 [2018-10-04 09:29:50,904 INFO L226 Difference]: Without dead ends: 427 [2018-10-04 09:29:50,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-10-04 09:29:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-10-04 09:29:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-10-04 09:29:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-10-04 09:29:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-10-04 09:29:50,907 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 422 [2018-10-04 09:29:50,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:50,907 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-10-04 09:29:50,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 09:29:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-10-04 09:29:50,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-04 09:29:50,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:50,908 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:50,909 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:50,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1073230150, now seen corresponding path program 105 times [2018-10-04 09:29:50,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:50,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:50,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:50,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:50,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:29:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:55,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:29:55,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:29:55,150 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:29:55,340 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-04 09:29:55,341 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:29:55,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:29:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:29:55,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:29:55,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 09:29:55,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 09:29:55,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 09:29:55,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-10-04 09:29:55,512 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 108 states. [2018-10-04 09:29:55,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:29:55,960 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-10-04 09:29:55,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 09:29:55,961 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-10-04 09:29:55,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:29:55,962 INFO L225 Difference]: With dead ends: 433 [2018-10-04 09:29:55,962 INFO L226 Difference]: Without dead ends: 431 [2018-10-04 09:29:55,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-10-04 09:29:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-10-04 09:29:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-10-04 09:29:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-10-04 09:29:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-10-04 09:29:55,967 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 426 [2018-10-04 09:29:55,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:29:55,968 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-10-04 09:29:55,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 09:29:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-10-04 09:29:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-10-04 09:29:55,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:29:55,970 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1] [2018-10-04 09:29:55,970 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:29:55,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:29:55,970 INFO L82 PathProgramCache]: Analyzing trace with hash 480472048, now seen corresponding path program 106 times [2018-10-04 09:29:55,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:29:55,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:29:55,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:55,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:29:55,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:29:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:30:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:30:00,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:30:00,294 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:30:00,303 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:30:00,388 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:30:00,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:30:00,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:30:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:30:00,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:30:00,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 09:30:00,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 09:30:00,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 09:30:00,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-10-04 09:30:00,562 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 109 states. [2018-10-04 09:30:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:30:01,231 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-10-04 09:30:01,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 09:30:01,232 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-10-04 09:30:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:30:01,232 INFO L225 Difference]: With dead ends: 437 [2018-10-04 09:30:01,232 INFO L226 Difference]: Without dead ends: 435 [2018-10-04 09:30:01,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-10-04 09:30:01,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-10-04 09:30:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-10-04 09:30:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-10-04 09:30:01,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-10-04 09:30:01,236 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 430 [2018-10-04 09:30:01,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:30:01,236 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-10-04 09:30:01,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 09:30:01,236 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-10-04 09:30:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-10-04 09:30:01,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:30:01,238 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1] [2018-10-04 09:30:01,238 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:30:01,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:30:01,238 INFO L82 PathProgramCache]: Analyzing trace with hash -427998822, now seen corresponding path program 107 times [2018-10-04 09:30:01,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:30:01,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:30:01,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:30:01,239 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:30:01,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:30:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:30:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:30:05,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:30:05,554 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:30:05,561 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:30:05,775 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-04 09:30:05,775 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:30:05,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:30:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:30:05,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:30:05,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-04 09:30:05,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 09:30:05,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 09:30:05,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-10-04 09:30:05,946 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 110 states. [2018-10-04 09:30:06,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:30:06,480 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-10-04 09:30:06,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 09:30:06,481 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-10-04 09:30:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:30:06,482 INFO L225 Difference]: With dead ends: 441 [2018-10-04 09:30:06,482 INFO L226 Difference]: Without dead ends: 439 [2018-10-04 09:30:06,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-10-04 09:30:06,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-10-04 09:30:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-10-04 09:30:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-10-04 09:30:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-10-04 09:30:06,485 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 434 [2018-10-04 09:30:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:30:06,485 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-10-04 09:30:06,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 09:30:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-10-04 09:30:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-10-04 09:30:06,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:30:06,486 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1] [2018-10-04 09:30:06,487 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:30:06,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:30:06,487 INFO L82 PathProgramCache]: Analyzing trace with hash -557829564, now seen corresponding path program 108 times [2018-10-04 09:30:06,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:30:06,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:30:06,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:30:06,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:30:06,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:30:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-04 09:30:09,309 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 09:30:09,314 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 09:30:09,315 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:30:09 BoogieIcfgContainer [2018-10-04 09:30:09,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:30:09,317 INFO L168 Benchmark]: Toolchain (without parser) took 235865.27 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 231.7 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 24.4 MB). Peak memory consumption was 256.1 MB. Max. memory is 7.1 GB. [2018-10-04 09:30:09,319 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:30:09,319 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:30:09,320 INFO L168 Benchmark]: Boogie Preprocessor took 23.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:30:09,320 INFO L168 Benchmark]: RCFGBuilder took 355.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 09:30:09,320 INFO L168 Benchmark]: TraceAbstraction took 235437.64 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 231.7 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 3.2 MB). Peak memory consumption was 235.0 MB. Max. memory is 7.1 GB. [2018-10-04 09:30:09,323 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 0.19 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 43.85 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 23.76 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 355.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235437.64 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 231.7 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 3.2 MB). Peak memory consumption was 235.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 41). Cancelled while BasicCegarLoop was analyzing trace of length 439 with TraceHistMax 108, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 90 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 235.3s OverallTime, 110 OverallIterations, 108 TraceHistogramMax, 26.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 981 SDtfs, 582 SDslu, 21211 SDs, 0 SdLazy, 9551 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29643 GetRequests, 23756 SyntacticMatches, 0 SemanticMatches, 5887 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 177.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=439occurred in iteration=109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 109 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 8.3s SatisfiabilityAnalysisTime, 187.5s InterpolantComputationTime, 47520 NumberOfCodeBlocks, 47520 NumberOfCodeBlocksAsserted, 3150 NumberOfCheckSat, 47304 ConstructedInterpolants, 0 QuantifiedInterpolants, 41060932 SizeOfPredicates, 107 NumberOfNonLiveVariables, 35952 ConjunctsInSsa, 5992 ConjunctsInUnsatCore, 216 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1644804 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_09-30-09-333.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_09-30-09-333.csv Completed graceful shutdown