java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 20:49:26,990 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 20:49:26,992 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 20:49:27,004 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 20:49:27,004 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 20:49:27,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 20:49:27,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 20:49:27,009 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 20:49:27,011 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 20:49:27,012 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 20:49:27,012 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 20:49:27,044 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 20:49:27,066 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 20:49:27,066 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 20:49:27,066 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 20:49:27,067 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 20:49:27,067 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 20:49:27,067 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 20:49:27,068 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 20:49:27,068 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 20:49:27,068 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 20:49:27,068 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 20:49:27,068 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 20:49:27,069 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 20:49:27,069 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 20:49:27,069 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 20:49:27,069 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 20:49:27,069 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 20:49:27,070 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 20:49:27,070 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 20:49:27,070 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 20:49:27,070 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 20:49:27,070 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 20:49:27,071 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 20:49:27,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:49:27,071 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 20:49:27,071 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 20:49:27,071 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 20:49:27,072 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 20:49:27,072 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 20:49:27,072 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 20:49:27,072 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 20:49:27,072 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 20:49:27,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 20:49:27,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 20:49:27,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 20:49:27,144 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 20:49:27,144 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 20:49:27,145 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl [2018-09-30 20:49:27,146 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl' [2018-09-30 20:49:27,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 20:49:27,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 20:49:27,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 20:49:27,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 20:49:27,204 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 20:49:27,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/1) ... [2018-09-30 20:49:27,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/1) ... [2018-09-30 20:49:27,244 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 20:49:27,245 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 20:49:27,245 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 20:49:27,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 20:49:27,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 20:49:27,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 20:49:27,248 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 20:49:27,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/1) ... [2018-09-30 20:49:27,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/1) ... [2018-09-30 20:49:27,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/1) ... [2018-09-30 20:49:27,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/1) ... [2018-09-30 20:49:27,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/1) ... [2018-09-30 20:49:27,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/1) ... [2018-09-30 20:49:27,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/1) ... [2018-09-30 20:49:27,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 20:49:27,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 20:49:27,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 20:49:27,276 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 20:49:27,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (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 [2018-09-30 20:49:27,339 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-30 20:49:27,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-30 20:49:27,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-30 20:49:27,728 INFO L345 CfgBuilder]: Using library mode [2018-09-30 20:49:27,729 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:49:27 BoogieIcfgContainer [2018-09-30 20:49:27,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 20:49:27,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 20:49:27,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 20:49:27,737 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 20:49:27,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:49:27" (1/2) ... [2018-09-30 20:49:27,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d41d83 and model type Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 08:49:27, skipping insertion in model container [2018-09-30 20:49:27,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:49:27" (2/2) ... [2018-09-30 20:49:27,741 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-ArraysIntegefied.bpl [2018-09-30 20:49:27,752 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 20:49:27,766 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 20:49:27,821 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 20:49:27,822 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 20:49:27,822 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 20:49:27,822 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 20:49:27,822 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 20:49:27,822 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 20:49:27,823 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 20:49:27,823 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 20:49:27,823 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 20:49:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-09-30 20:49:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 20:49:27,845 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:27,846 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 20:49:27,848 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:27,855 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:27,855 INFO L82 PathProgramCache]: Analyzing trace with hash 890493448, now seen corresponding path program 1 times [2018-09-30 20:49:27,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:27,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:27,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:27,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:27,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:27,996 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:49:27,996 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:49:28,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:49:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:49:28,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:28,027 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-09-30 20:49:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:28,246 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2018-09-30 20:49:28,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:49:28,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-30 20:49:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:28,260 INFO L225 Difference]: With dead ends: 22 [2018-09-30 20:49:28,260 INFO L226 Difference]: Without dead ends: 10 [2018-09-30 20:49:28,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:49:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-30 20:49:28,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-30 20:49:28,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-30 20:49:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-30 20:49:28,297 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-09-30 20:49:28,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:28,298 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-30 20:49:28,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:49:28,298 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-30 20:49:28,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 20:49:28,299 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:28,299 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 20:49:28,299 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:28,299 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:28,300 INFO L82 PathProgramCache]: Analyzing trace with hash 892342412, now seen corresponding path program 1 times [2018-09-30 20:49:28,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:28,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:28,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:28,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:28,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:28,325 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:49:28,325 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:49:28,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:49:28,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:49:28,327 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:28,327 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-09-30 20:49:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:28,367 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-30 20:49:28,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:49:28,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-30 20:49:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:28,368 INFO L225 Difference]: With dead ends: 13 [2018-09-30 20:49:28,368 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 20:49:28,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:49:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 20:49:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 20:49:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 20:49:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-30 20:49:28,373 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-09-30 20:49:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:28,373 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-30 20:49:28,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:49:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-30 20:49:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 20:49:28,374 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:28,374 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:28,374 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:28,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash -391235530, now seen corresponding path program 1 times [2018-09-30 20:49:28,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:28,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:28,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:28,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:28,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:28,476 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:28,477 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:28,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:28,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:28,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:28,725 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 20:49:28,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 20:49:28,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 20:49:28,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:28,726 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-09-30 20:49:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:28,854 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-30 20:49:28,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 20:49:28,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-09-30 20:49:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:28,855 INFO L225 Difference]: With dead ends: 17 [2018-09-30 20:49:28,855 INFO L226 Difference]: Without dead ends: 15 [2018-09-30 20:49:28,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:49:28,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-30 20:49:28,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-30 20:49:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-30 20:49:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-30 20:49:28,859 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-09-30 20:49:28,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:28,859 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-30 20:49:28,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 20:49:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-30 20:49:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 20:49:28,861 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:28,861 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:28,861 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:28,861 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:28,862 INFO L82 PathProgramCache]: Analyzing trace with hash -602113312, now seen corresponding path program 2 times [2018-09-30 20:49:28,862 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:28,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:28,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:28,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:28,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:29,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:29,086 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:49:29,102 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:49:29,131 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:49:29,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:29,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:29,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:29,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 20:49:29,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 20:49:29,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 20:49:29,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:29,318 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-09-30 20:49:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:29,381 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-30 20:49:29,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 20:49:29,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-09-30 20:49:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:29,383 INFO L225 Difference]: With dead ends: 21 [2018-09-30 20:49:29,384 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 20:49:29,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:49:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 20:49:29,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-30 20:49:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 20:49:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-30 20:49:29,388 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-09-30 20:49:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:29,389 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-30 20:49:29,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 20:49:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-30 20:49:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:49:29,390 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:29,390 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:29,390 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:29,391 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:29,391 INFO L82 PathProgramCache]: Analyzing trace with hash 334846090, now seen corresponding path program 3 times [2018-09-30 20:49:29,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:29,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:29,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:29,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:29,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:29,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:29,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:29,517 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:49:29,528 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 20:49:29,529 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:29,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:29,713 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:29,713 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 20:49:29,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 20:49:29,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 20:49:29,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:29,714 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-09-30 20:49:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:29,758 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-30 20:49:29,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 20:49:29,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-09-30 20:49:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:29,760 INFO L225 Difference]: With dead ends: 25 [2018-09-30 20:49:29,760 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 20:49:29,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:49:29,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 20:49:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 20:49:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 20:49:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-30 20:49:29,764 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-09-30 20:49:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:29,765 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-30 20:49:29,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 20:49:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-30 20:49:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 20:49:29,766 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:29,766 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:29,766 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:29,766 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:29,767 INFO L82 PathProgramCache]: Analyzing trace with hash -747417292, now seen corresponding path program 4 times [2018-09-30 20:49:29,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:29,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:29,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:29,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:29,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:29,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:29,841 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 [2018-09-30 20:49:29,852 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:49:29,862 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:49:29,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:29,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:30,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:30,021 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 20:49:30,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:49:30,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:49:30,022 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:30,022 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-09-30 20:49:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:30,304 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-30 20:49:30,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 20:49:30,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-09-30 20:49:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:30,306 INFO L225 Difference]: With dead ends: 29 [2018-09-30 20:49:30,306 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 20:49:30,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:49:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 20:49:30,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 20:49:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 20:49:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-30 20:49:30,310 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-09-30 20:49:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:30,311 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-30 20:49:30,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:49:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-30 20:49:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 20:49:30,312 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:30,312 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:30,313 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:30,313 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:30,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1016128734, now seen corresponding path program 5 times [2018-09-30 20:49:30,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:30,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:30,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:30,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:30,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:30,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:30,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:30,589 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:49:30,645 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 20:49:30,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:30,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:30,870 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:30,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 20:49:30,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 20:49:30,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 20:49:30,872 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:30,872 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-09-30 20:49:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:30,944 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-30 20:49:30,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 20:49:30,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-30 20:49:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:30,946 INFO L225 Difference]: With dead ends: 33 [2018-09-30 20:49:30,947 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 20:49:30,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 20:49:30,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 20:49:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 20:49:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-30 20:49:30,952 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-09-30 20:49:30,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:30,952 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-30 20:49:30,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 20:49:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-30 20:49:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-30 20:49:30,953 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:30,953 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:30,954 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:30,954 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:30,954 INFO L82 PathProgramCache]: Analyzing trace with hash -267873400, now seen corresponding path program 6 times [2018-09-30 20:49:30,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:30,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:30,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:30,955 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:30,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:31,054 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:31,054 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 [2018-09-30 20:49:31,064 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:49:31,080 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 20:49:31,081 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:31,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:31,328 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:31,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-30 20:49:31,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 20:49:31,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 20:49:31,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:31,329 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2018-09-30 20:49:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:31,471 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-30 20:49:31,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:49:31,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-30 20:49:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:31,473 INFO L225 Difference]: With dead ends: 37 [2018-09-30 20:49:31,473 INFO L226 Difference]: Without dead ends: 35 [2018-09-30 20:49:31,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:49:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-30 20:49:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-30 20:49:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-30 20:49:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-30 20:49:31,479 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-09-30 20:49:31,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:31,480 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-30 20:49:31,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 20:49:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-30 20:49:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-30 20:49:31,481 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:31,481 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:31,482 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:31,482 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:31,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947278, now seen corresponding path program 7 times [2018-09-30 20:49:31,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:31,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:31,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:31,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:31,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:31,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:31,581 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:31,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:31,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:31,797 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:31,797 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 20:49:31,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:49:31,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:49:31,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:31,798 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2018-09-30 20:49:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:31,906 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-30 20:49:31,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 20:49:31,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-09-30 20:49:31,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:31,908 INFO L225 Difference]: With dead ends: 41 [2018-09-30 20:49:31,908 INFO L226 Difference]: Without dead ends: 39 [2018-09-30 20:49:31,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:49:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-30 20:49:31,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-30 20:49:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 20:49:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-30 20:49:31,913 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-09-30 20:49:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:31,913 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-30 20:49:31,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:49:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-30 20:49:31,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 20:49:31,915 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:31,915 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:31,915 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:31,916 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:31,916 INFO L82 PathProgramCache]: Analyzing trace with hash -223329828, now seen corresponding path program 8 times [2018-09-30 20:49:31,916 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:31,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:31,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:31,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:31,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:32,022 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:32,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:32,032 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:49:32,057 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:49:32,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:32,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:32,173 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:32,174 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 20:49:32,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 20:49:32,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 20:49:32,175 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:32,175 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2018-09-30 20:49:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:32,232 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-30 20:49:32,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 20:49:32,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-09-30 20:49:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:32,235 INFO L225 Difference]: With dead ends: 45 [2018-09-30 20:49:32,236 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 20:49:32,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:49:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 20:49:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 20:49:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 20:49:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-30 20:49:32,242 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-09-30 20:49:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:32,242 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-30 20:49:32,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 20:49:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-30 20:49:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-30 20:49:32,243 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:32,244 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:32,244 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:32,244 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:32,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1659551354, now seen corresponding path program 9 times [2018-09-30 20:49:32,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:32,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:32,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:32,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:32,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:32,386 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:32,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:32,395 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:49:32,424 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 20:49:32,424 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:32,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:32,648 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:32,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 20:49:32,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:49:32,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:49:32,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:32,649 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 12 states. [2018-09-30 20:49:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:32,859 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-30 20:49:32,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 20:49:32,860 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-09-30 20:49:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:32,861 INFO L225 Difference]: With dead ends: 49 [2018-09-30 20:49:32,861 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 20:49:32,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:49:32,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 20:49:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 20:49:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 20:49:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-30 20:49:32,867 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-09-30 20:49:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:32,868 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-30 20:49:32,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:49:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-30 20:49:32,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 20:49:32,869 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:32,869 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:32,870 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:32,870 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:32,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2009179088, now seen corresponding path program 10 times [2018-09-30 20:49:32,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:32,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:32,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:32,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:32,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:33,029 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:33,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:33,037 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:49:33,053 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:49:33,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:33,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:33,187 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:33,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 20:49:33,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:49:33,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:49:33,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:33,188 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 13 states. [2018-09-30 20:49:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:33,343 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-30 20:49:33,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:49:33,347 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-09-30 20:49:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:33,348 INFO L225 Difference]: With dead ends: 53 [2018-09-30 20:49:33,348 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 20:49:33,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:49:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 20:49:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-30 20:49:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-30 20:49:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-30 20:49:33,353 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-09-30 20:49:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:33,353 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-30 20:49:33,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:49:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-30 20:49:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 20:49:33,354 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:33,354 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:33,355 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:33,355 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:33,355 INFO L82 PathProgramCache]: Analyzing trace with hash 782635482, now seen corresponding path program 11 times [2018-09-30 20:49:33,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:33,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:33,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:33,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:33,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:33,474 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:33,475 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 [2018-09-30 20:49:33,485 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:49:33,501 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 20:49:33,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:33,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:33,785 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:33,786 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 20:49:33,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:49:33,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:49:33,786 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:33,786 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 14 states. [2018-09-30 20:49:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:33,890 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-30 20:49:33,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 20:49:33,890 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-09-30 20:49:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:33,891 INFO L225 Difference]: With dead ends: 57 [2018-09-30 20:49:33,891 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 20:49:33,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:49:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 20:49:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 20:49:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 20:49:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-30 20:49:33,898 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-09-30 20:49:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:33,898 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-30 20:49:33,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:49:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-30 20:49:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-30 20:49:33,899 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:33,900 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:33,900 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:33,900 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:33,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1233576580, now seen corresponding path program 12 times [2018-09-30 20:49:33,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:33,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:33,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:33,902 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:33,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:34,044 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:34,044 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:34,072 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:49:34,232 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 20:49:34,233 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:34,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:34,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:34,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 20:49:34,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:49:34,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:49:34,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:34,611 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 15 states. [2018-09-30 20:49:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:34,667 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-30 20:49:34,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 20:49:34,668 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-09-30 20:49:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:34,669 INFO L225 Difference]: With dead ends: 61 [2018-09-30 20:49:34,669 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 20:49:34,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 20:49:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 20:49:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 20:49:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-30 20:49:34,674 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-09-30 20:49:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:34,674 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-30 20:49:34,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:49:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-30 20:49:34,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 20:49:34,675 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:34,675 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:34,676 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:34,676 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:34,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1893420590, now seen corresponding path program 13 times [2018-09-30 20:49:34,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:34,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:34,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:34,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:34,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:34,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:34,794 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 [2018-09-30 20:49:34,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:34,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:36,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:36,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 20:49:36,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:49:36,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:49:36,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:36,546 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 16 states. [2018-09-30 20:49:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:36,649 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-30 20:49:36,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 20:49:36,650 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-09-30 20:49:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:36,651 INFO L225 Difference]: With dead ends: 65 [2018-09-30 20:49:36,651 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 20:49:36,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:49:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 20:49:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-30 20:49:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-30 20:49:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-30 20:49:36,658 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-09-30 20:49:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:36,658 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-30 20:49:36,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:49:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-30 20:49:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 20:49:36,660 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:36,660 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:36,660 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:36,660 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:36,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1151478568, now seen corresponding path program 14 times [2018-09-30 20:49:36,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:36,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:36,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:36,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:36,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:36,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:36,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:36,810 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:49:36,848 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:49:36,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:36,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:37,307 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:37,307 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 20:49:37,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:49:37,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:49:37,308 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:37,308 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 17 states. [2018-09-30 20:49:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:37,463 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-30 20:49:37,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 20:49:37,464 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-09-30 20:49:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:37,465 INFO L225 Difference]: With dead ends: 69 [2018-09-30 20:49:37,465 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 20:49:37,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:49:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 20:49:37,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 20:49:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 20:49:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-30 20:49:37,471 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-09-30 20:49:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:37,471 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-30 20:49:37,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:49:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-30 20:49:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-30 20:49:37,472 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:37,472 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:37,473 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:37,473 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:37,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1586034306, now seen corresponding path program 15 times [2018-09-30 20:49:37,473 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:37,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:37,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:37,474 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:37,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:37,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:37,608 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:37,617 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:49:37,668 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 20:49:37,668 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:37,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:38,006 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:38,006 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 20:49:38,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:49:38,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:49:38,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:38,007 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 18 states. [2018-09-30 20:49:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:38,203 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-30 20:49:38,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 20:49:38,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-09-30 20:49:38,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:38,204 INFO L225 Difference]: With dead ends: 73 [2018-09-30 20:49:38,204 INFO L226 Difference]: Without dead ends: 71 [2018-09-30 20:49:38,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:49:38,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-30 20:49:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-30 20:49:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-30 20:49:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-30 20:49:38,209 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-09-30 20:49:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:38,209 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-30 20:49:38,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:49:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-30 20:49:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-30 20:49:38,211 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:38,211 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:38,211 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:38,211 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1318531884, now seen corresponding path program 16 times [2018-09-30 20:49:38,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:38,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:38,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:38,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:38,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:38,418 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:38,418 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:38,426 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:49:38,443 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:49:38,444 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:38,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:39,056 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:39,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 20:49:39,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 20:49:39,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 20:49:39,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:39,057 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 19 states. [2018-09-30 20:49:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:39,194 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-30 20:49:39,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 20:49:39,195 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-09-30 20:49:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:39,195 INFO L225 Difference]: With dead ends: 77 [2018-09-30 20:49:39,195 INFO L226 Difference]: Without dead ends: 75 [2018-09-30 20:49:39,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:49:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-30 20:49:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-30 20:49:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-30 20:49:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-30 20:49:39,200 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-09-30 20:49:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:39,200 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-30 20:49:39,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 20:49:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-30 20:49:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 20:49:39,201 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:39,201 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:39,202 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:39,202 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:39,202 INFO L82 PathProgramCache]: Analyzing trace with hash -561837354, now seen corresponding path program 17 times [2018-09-30 20:49:39,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:39,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:39,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:39,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:39,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:39,527 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:39,527 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:39,535 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:49:39,555 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 20:49:39,555 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:39,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:39,747 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:39,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 20:49:39,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:49:39,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:49:39,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:39,748 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 20 states. [2018-09-30 20:49:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:39,916 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-30 20:49:39,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 20:49:39,916 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-09-30 20:49:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:39,918 INFO L225 Difference]: With dead ends: 81 [2018-09-30 20:49:39,918 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 20:49:39,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 20:49:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 20:49:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 20:49:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-30 20:49:39,923 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-09-30 20:49:39,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:39,923 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-30 20:49:39,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:49:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-30 20:49:39,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 20:49:39,924 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:39,924 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:39,925 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:39,925 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:39,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1611070848, now seen corresponding path program 18 times [2018-09-30 20:49:39,925 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:39,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:39,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:39,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:39,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:40,085 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:40,085 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 [2018-09-30 20:49:40,093 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:49:40,134 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 20:49:40,134 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:40,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:40,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:40,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-30 20:49:40,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 20:49:40,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 20:49:40,296 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:40,296 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 21 states. [2018-09-30 20:49:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:40,419 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-30 20:49:40,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 20:49:40,419 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-09-30 20:49:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:40,420 INFO L225 Difference]: With dead ends: 85 [2018-09-30 20:49:40,420 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 20:49:40,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:49:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 20:49:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 20:49:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 20:49:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-30 20:49:40,425 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-09-30 20:49:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:40,425 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-30 20:49:40,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 20:49:40,426 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-30 20:49:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-30 20:49:40,427 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:40,427 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:40,427 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:40,427 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:40,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1013085398, now seen corresponding path program 19 times [2018-09-30 20:49:40,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:40,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:40,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:40,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:40,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:40,603 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:40,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:40,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:40,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:40,851 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:40,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 20:49:40,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 20:49:40,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 20:49:40,852 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:40,852 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-09-30 20:49:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:40,973 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-30 20:49:40,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 20:49:40,973 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-09-30 20:49:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:40,975 INFO L225 Difference]: With dead ends: 89 [2018-09-30 20:49:40,975 INFO L226 Difference]: Without dead ends: 87 [2018-09-30 20:49:40,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:49:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-30 20:49:40,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-30 20:49:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-30 20:49:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-30 20:49:40,978 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-09-30 20:49:40,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:40,979 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-30 20:49:40,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 20:49:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-30 20:49:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 20:49:40,980 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:40,980 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:40,980 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:40,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash 947991508, now seen corresponding path program 20 times [2018-09-30 20:49:40,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:40,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:40,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:40,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:40,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:41,453 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:41,453 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 [2018-09-30 20:49:41,463 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:49:41,509 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:49:41,510 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:41,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:41,759 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:41,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 20:49:41,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 20:49:41,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 20:49:41,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:41,760 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 23 states. [2018-09-30 20:49:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:41,839 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-30 20:49:41,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 20:49:41,842 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-09-30 20:49:41,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:41,843 INFO L225 Difference]: With dead ends: 93 [2018-09-30 20:49:41,843 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 20:49:41,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:49:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 20:49:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 20:49:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 20:49:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-30 20:49:41,847 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-09-30 20:49:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:41,847 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-30 20:49:41,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 20:49:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-30 20:49:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-30 20:49:41,848 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:41,848 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:41,849 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:41,849 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:41,849 INFO L82 PathProgramCache]: Analyzing trace with hash -861112450, now seen corresponding path program 21 times [2018-09-30 20:49:41,849 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:41,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:41,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:41,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:41,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:42,224 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:42,224 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 [2018-09-30 20:49:42,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:49:42,257 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 20:49:42,258 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:42,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:42,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:42,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-30 20:49:42,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 20:49:42,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 20:49:42,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:42,450 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 24 states. [2018-09-30 20:49:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:42,606 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-30 20:49:42,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 20:49:42,606 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-09-30 20:49:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:42,607 INFO L225 Difference]: With dead ends: 97 [2018-09-30 20:49:42,608 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 20:49:42,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 20:49:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 20:49:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 20:49:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-30 20:49:42,612 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-09-30 20:49:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:42,612 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-30 20:49:42,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 20:49:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-30 20:49:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-30 20:49:42,613 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:42,613 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:42,613 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:42,613 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:42,614 INFO L82 PathProgramCache]: Analyzing trace with hash 215602728, now seen corresponding path program 22 times [2018-09-30 20:49:42,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:42,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:42,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:42,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:42,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:43,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:43,394 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) [2018-09-30 20:49:43,404 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:49:43,424 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:49:43,424 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:43,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:43,677 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:43,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-30 20:49:43,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 20:49:43,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 20:49:43,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:43,678 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 25 states. [2018-09-30 20:49:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:43,795 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-30 20:49:43,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 20:49:43,795 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-09-30 20:49:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:43,796 INFO L225 Difference]: With dead ends: 101 [2018-09-30 20:49:43,796 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 20:49:43,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:49:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 20:49:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-30 20:49:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 20:49:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-30 20:49:43,800 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-09-30 20:49:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:43,800 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-30 20:49:43,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 20:49:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-30 20:49:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 20:49:43,801 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:43,801 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:43,802 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:43,802 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:43,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1534865454, now seen corresponding path program 23 times [2018-09-30 20:49:43,802 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:43,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:43,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:43,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:43,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:44,026 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:44,027 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 [2018-09-30 20:49:44,033 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:49:44,061 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 20:49:44,062 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:44,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:44,415 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:44,415 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 20:49:44,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 20:49:44,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 20:49:44,416 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:44,416 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 26 states. [2018-09-30 20:49:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:44,552 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-30 20:49:44,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 20:49:44,555 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-09-30 20:49:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:44,556 INFO L225 Difference]: With dead ends: 105 [2018-09-30 20:49:44,556 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 20:49:44,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 20:49:44,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 20:49:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 20:49:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-30 20:49:44,559 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-09-30 20:49:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:44,559 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-30 20:49:44,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 20:49:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-30 20:49:44,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-30 20:49:44,560 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:44,560 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:44,560 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:44,561 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:44,561 INFO L82 PathProgramCache]: Analyzing trace with hash -35330948, now seen corresponding path program 24 times [2018-09-30 20:49:44,561 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:44,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:44,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:44,562 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:44,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:44,761 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:44,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:44,768 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:49:44,808 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 20:49:44,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:44,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:45,034 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:45,034 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-30 20:49:45,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 20:49:45,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 20:49:45,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:45,035 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 27 states. [2018-09-30 20:49:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:45,133 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-30 20:49:45,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 20:49:45,133 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-09-30 20:49:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:45,135 INFO L225 Difference]: With dead ends: 109 [2018-09-30 20:49:45,135 INFO L226 Difference]: Without dead ends: 107 [2018-09-30 20:49:45,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:49:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-30 20:49:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-30 20:49:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-30 20:49:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-30 20:49:45,140 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-09-30 20:49:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:45,140 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-30 20:49:45,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 20:49:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-30 20:49:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-30 20:49:45,141 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:45,141 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:45,141 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:45,141 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:45,141 INFO L82 PathProgramCache]: Analyzing trace with hash -503868378, now seen corresponding path program 25 times [2018-09-30 20:49:45,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:45,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:45,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:45,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:45,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:45,323 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:45,323 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 [2018-09-30 20:49:45,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:45,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:45,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:45,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 20:49:45,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 20:49:45,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 20:49:45,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:45,615 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 28 states. [2018-09-30 20:49:45,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:45,784 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-30 20:49:45,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 20:49:45,785 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-09-30 20:49:45,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:45,786 INFO L225 Difference]: With dead ends: 113 [2018-09-30 20:49:45,786 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 20:49:45,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:49:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 20:49:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-30 20:49:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 20:49:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-30 20:49:45,790 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-09-30 20:49:45,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:45,790 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-30 20:49:45,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 20:49:45,790 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-30 20:49:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 20:49:45,791 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:45,791 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:45,791 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:45,791 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:45,791 INFO L82 PathProgramCache]: Analyzing trace with hash 410410704, now seen corresponding path program 26 times [2018-09-30 20:49:45,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:45,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:45,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:45,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:45,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:46,261 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:46,262 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 [2018-09-30 20:49:46,269 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:49:46,295 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:49:46,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:46,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:46,527 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:46,527 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 20:49:46,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 20:49:46,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 20:49:46,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:46,528 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 29 states. [2018-09-30 20:49:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:46,816 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-30 20:49:46,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 20:49:46,816 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-09-30 20:49:46,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:46,817 INFO L225 Difference]: With dead ends: 117 [2018-09-30 20:49:46,817 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 20:49:46,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:49:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 20:49:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 20:49:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 20:49:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-30 20:49:46,820 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-09-30 20:49:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:46,820 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-30 20:49:46,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 20:49:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-30 20:49:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-30 20:49:46,820 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:46,821 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:46,821 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:46,821 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:46,821 INFO L82 PathProgramCache]: Analyzing trace with hash 131843194, now seen corresponding path program 27 times [2018-09-30 20:49:46,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:46,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:46,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:46,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:46,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:47,634 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:47,634 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:47,641 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:49:47,676 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 20:49:47,677 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:47,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:47,890 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:47,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-30 20:49:47,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 20:49:47,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 20:49:47,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:47,891 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 30 states. [2018-09-30 20:49:48,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:48,048 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-30 20:49:48,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 20:49:48,049 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-09-30 20:49:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:48,050 INFO L225 Difference]: With dead ends: 121 [2018-09-30 20:49:48,050 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 20:49:48,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:49:48,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 20:49:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 20:49:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 20:49:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-30 20:49:48,054 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-09-30 20:49:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:48,054 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-30 20:49:48,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 20:49:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-30 20:49:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 20:49:48,055 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:48,055 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:48,055 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:48,056 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1432503588, now seen corresponding path program 28 times [2018-09-30 20:49:48,056 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:48,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:48,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:48,057 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:48,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:48,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:48,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:48,313 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:49:48,339 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:49:48,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:48,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:48,759 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:48,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 20:49:48,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 20:49:48,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 20:49:48,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:48,760 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 31 states. [2018-09-30 20:49:48,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:48,947 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-30 20:49:48,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 20:49:48,947 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-09-30 20:49:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:48,949 INFO L225 Difference]: With dead ends: 125 [2018-09-30 20:49:48,949 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 20:49:48,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:49:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 20:49:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-30 20:49:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-30 20:49:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-30 20:49:48,953 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-09-30 20:49:48,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:48,954 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-30 20:49:48,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 20:49:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-30 20:49:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 20:49:48,954 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:48,955 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:48,955 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:48,955 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:48,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2063310642, now seen corresponding path program 29 times [2018-09-30 20:49:48,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:48,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:48,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:48,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:48,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:49,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:49,190 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 [2018-09-30 20:49:49,198 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:49:49,258 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 20:49:49,258 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:49,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:49,482 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:49,482 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 20:49:49,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 20:49:49,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 20:49:49,483 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:49,483 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 32 states. [2018-09-30 20:49:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:49,661 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-30 20:49:49,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 20:49:49,661 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-09-30 20:49:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:49,663 INFO L225 Difference]: With dead ends: 129 [2018-09-30 20:49:49,663 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 20:49:49,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:49:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 20:49:49,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 20:49:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 20:49:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-30 20:49:49,666 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-09-30 20:49:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:49,667 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-30 20:49:49,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 20:49:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-30 20:49:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-30 20:49:49,667 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:49,667 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:49,668 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:49,668 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:49,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1719888008, now seen corresponding path program 30 times [2018-09-30 20:49:49,668 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:49,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:49,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:49,669 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:49,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:49,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:49,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:50,006 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:49:50,050 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 20:49:50,050 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:50,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:50,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:50,285 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-30 20:49:50,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 20:49:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 20:49:50,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:50,286 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-09-30 20:49:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:50,448 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-30 20:49:50,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 20:49:50,448 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-09-30 20:49:50,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:50,450 INFO L225 Difference]: With dead ends: 133 [2018-09-30 20:49:50,450 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 20:49:50,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:50,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 20:49:50,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 20:49:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 20:49:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-30 20:49:50,454 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-09-30 20:49:50,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:50,454 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-30 20:49:50,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 20:49:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-30 20:49:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-30 20:49:50,455 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:50,456 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:50,456 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:50,456 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:50,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1270519518, now seen corresponding path program 31 times [2018-09-30 20:49:50,456 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:50,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:50,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:50,457 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:50,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:50,845 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:50,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:50,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:50,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:51,137 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:51,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 20:49:51,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 20:49:51,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 20:49:51,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:51,139 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 34 states. [2018-09-30 20:49:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:51,291 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-30 20:49:51,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 20:49:51,291 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-09-30 20:49:51,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:51,293 INFO L225 Difference]: With dead ends: 137 [2018-09-30 20:49:51,293 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 20:49:51,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:49:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 20:49:51,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-30 20:49:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-30 20:49:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-30 20:49:51,296 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-09-30 20:49:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:51,297 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-30 20:49:51,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 20:49:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-30 20:49:51,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 20:49:51,297 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:51,298 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:51,298 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:51,298 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:51,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1248242228, now seen corresponding path program 32 times [2018-09-30 20:49:51,298 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:51,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:51,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:51,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:51,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:51,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:51,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:51,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:49:51,676 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:49:51,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:51,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:51,924 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:51,924 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 20:49:51,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 20:49:51,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 20:49:51,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:51,925 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 35 states. [2018-09-30 20:49:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:52,118 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-30 20:49:52,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 20:49:52,119 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-09-30 20:49:52,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:52,120 INFO L225 Difference]: With dead ends: 141 [2018-09-30 20:49:52,120 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 20:49:52,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 20:49:52,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 20:49:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 20:49:52,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-30 20:49:52,123 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-09-30 20:49:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:52,124 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-30 20:49:52,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 20:49:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-30 20:49:52,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 20:49:52,125 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:52,125 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:52,125 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:52,125 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:52,126 INFO L82 PathProgramCache]: Analyzing trace with hash -596451978, now seen corresponding path program 33 times [2018-09-30 20:49:52,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:52,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:52,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:52,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:52,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:52,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:52,369 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:52,377 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:49:52,415 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 20:49:52,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:52,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:52,699 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:52,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-30 20:49:52,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 20:49:52,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 20:49:52,699 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:52,700 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 36 states. [2018-09-30 20:49:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:52,863 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-30 20:49:52,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 20:49:52,863 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-09-30 20:49:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:52,865 INFO L225 Difference]: With dead ends: 145 [2018-09-30 20:49:52,865 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 20:49:52,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 20:49:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 20:49:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 20:49:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-30 20:49:52,869 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-09-30 20:49:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:52,869 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-30 20:49:52,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 20:49:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-30 20:49:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-30 20:49:52,870 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:52,870 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:52,871 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:52,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:52,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1720483872, now seen corresponding path program 34 times [2018-09-30 20:49:52,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:52,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:52,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:52,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:52,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:53,171 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:53,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:53,180 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:49:53,210 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:49:53,210 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:53,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:53,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:53,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 20:49:53,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 20:49:53,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 20:49:53,537 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:53,537 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 37 states. [2018-09-30 20:49:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:53,871 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-30 20:49:53,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 20:49:53,871 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-09-30 20:49:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:53,873 INFO L225 Difference]: With dead ends: 149 [2018-09-30 20:49:53,873 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 20:49:53,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:49:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 20:49:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-30 20:49:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-30 20:49:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-30 20:49:53,877 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-09-30 20:49:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:53,877 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-30 20:49:53,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 20:49:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-30 20:49:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 20:49:53,878 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:53,879 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:53,879 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:53,879 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:53,879 INFO L82 PathProgramCache]: Analyzing trace with hash 811646410, now seen corresponding path program 35 times [2018-09-30 20:49:53,879 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:53,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:53,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:53,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:53,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:54,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:54,480 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 [2018-09-30 20:49:54,488 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:49:54,551 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 20:49:54,551 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:54,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:55,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:55,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 20:49:55,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 20:49:55,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 20:49:55,279 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:55,279 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 38 states. [2018-09-30 20:49:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:55,536 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-09-30 20:49:55,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 20:49:55,537 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-09-30 20:49:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:55,538 INFO L225 Difference]: With dead ends: 153 [2018-09-30 20:49:55,538 INFO L226 Difference]: Without dead ends: 151 [2018-09-30 20:49:55,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:49:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-30 20:49:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-30 20:49:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-30 20:49:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-09-30 20:49:55,542 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-09-30 20:49:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:55,543 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-09-30 20:49:55,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 20:49:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-09-30 20:49:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-30 20:49:55,543 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:55,544 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:55,544 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:55,544 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:55,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1428821620, now seen corresponding path program 36 times [2018-09-30 20:49:55,544 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:55,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:55,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:55,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:55,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:55,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:55,842 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:55,851 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:49:55,894 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 20:49:55,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:55,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:56,169 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:56,169 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-30 20:49:56,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 20:49:56,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 20:49:56,170 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:56,170 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 39 states. [2018-09-30 20:49:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:56,307 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-09-30 20:49:56,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 20:49:56,307 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-09-30 20:49:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:56,309 INFO L225 Difference]: With dead ends: 157 [2018-09-30 20:49:56,309 INFO L226 Difference]: Without dead ends: 155 [2018-09-30 20:49:56,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:56,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-30 20:49:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-30 20:49:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-30 20:49:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-09-30 20:49:56,313 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-09-30 20:49:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:56,313 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-09-30 20:49:56,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 20:49:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-09-30 20:49:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-30 20:49:56,314 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:56,314 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:56,315 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:56,315 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:56,315 INFO L82 PathProgramCache]: Analyzing trace with hash -823981538, now seen corresponding path program 37 times [2018-09-30 20:49:56,315 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:56,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:56,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:56,316 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:49:56,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:56,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:56,621 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:49:56,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:56,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:56,945 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:49:56,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 20:49:56,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 20:49:56,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 20:49:56,946 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:49:56,946 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 40 states. [2018-09-30 20:49:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:49:57,147 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-09-30 20:49:57,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 20:49:57,150 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-09-30 20:49:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:49:57,151 INFO L225 Difference]: With dead ends: 161 [2018-09-30 20:49:57,152 INFO L226 Difference]: Without dead ends: 159 [2018-09-30 20:49:57,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:49:57,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-30 20:49:57,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-30 20:49:57,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 20:49:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-09-30 20:49:57,155 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 154 [2018-09-30 20:49:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:49:57,155 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-09-30 20:49:57,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 20:49:57,156 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-09-30 20:49:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 20:49:57,156 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:49:57,157 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-09-30 20:49:57,157 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:49:57,157 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:49:57,157 INFO L82 PathProgramCache]: Analyzing trace with hash 373692616, now seen corresponding path program 38 times [2018-09-30 20:49:57,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:49:57,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:49:57,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:57,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:49:57,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:49:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:49:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:49:58,561 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:49:58,561 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 [2018-09-30 20:49:58,569 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:49:58,603 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:49:58,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:49:58,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:49:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:00,010 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:00,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 20:50:00,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 20:50:00,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 20:50:00,012 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:00,012 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 41 states. [2018-09-30 20:50:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:00,808 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-09-30 20:50:00,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 20:50:00,809 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-09-30 20:50:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:00,810 INFO L225 Difference]: With dead ends: 165 [2018-09-30 20:50:00,810 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 20:50:00,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-09-30 20:50:00,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 20:50:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-30 20:50:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-30 20:50:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-09-30 20:50:00,815 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 158 [2018-09-30 20:50:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:00,816 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-09-30 20:50:00,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 20:50:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-09-30 20:50:00,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-30 20:50:00,817 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:00,817 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:00,817 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:00,817 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:00,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1026702734, now seen corresponding path program 39 times [2018-09-30 20:50:00,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:00,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:00,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:00,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:00,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:01,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:01,667 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:01,675 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:50:01,737 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 20:50:01,737 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:01,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:02,103 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:02,104 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-30 20:50:02,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 20:50:02,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 20:50:02,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:02,104 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 42 states. [2018-09-30 20:50:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:02,427 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-09-30 20:50:02,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 20:50:02,428 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-09-30 20:50:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:02,430 INFO L225 Difference]: With dead ends: 169 [2018-09-30 20:50:02,430 INFO L226 Difference]: Without dead ends: 167 [2018-09-30 20:50:02,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:50:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-30 20:50:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-30 20:50:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-30 20:50:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-09-30 20:50:02,434 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 162 [2018-09-30 20:50:02,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:02,435 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-09-30 20:50:02,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 20:50:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-09-30 20:50:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-30 20:50:02,436 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:02,436 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:02,436 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:02,436 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:02,436 INFO L82 PathProgramCache]: Analyzing trace with hash 716474140, now seen corresponding path program 40 times [2018-09-30 20:50:02,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:02,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:02,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:02,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:02,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:02,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:02,756 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:02,764 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:50:02,812 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:50:02,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:02,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:03,130 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:03,130 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 20:50:03,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 20:50:03,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 20:50:03,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:03,131 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 43 states. [2018-09-30 20:50:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:03,304 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-09-30 20:50:03,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 20:50:03,304 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-09-30 20:50:03,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:03,306 INFO L225 Difference]: With dead ends: 173 [2018-09-30 20:50:03,306 INFO L226 Difference]: Without dead ends: 171 [2018-09-30 20:50:03,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:50:03,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-30 20:50:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-30 20:50:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-30 20:50:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-09-30 20:50:03,310 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 166 [2018-09-30 20:50:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:03,311 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-09-30 20:50:03,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 20:50:03,311 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-09-30 20:50:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-30 20:50:03,312 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:03,312 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:03,312 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:03,313 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:03,313 INFO L82 PathProgramCache]: Analyzing trace with hash 49604294, now seen corresponding path program 41 times [2018-09-30 20:50:03,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:03,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:03,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:03,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:03,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:04,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:04,152 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 [2018-09-30 20:50:04,160 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:50:04,238 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 20:50:04,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:04,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:04,644 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:04,644 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 20:50:04,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 20:50:04,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 20:50:04,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:04,645 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 44 states. [2018-09-30 20:50:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:04,893 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-09-30 20:50:04,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 20:50:04,893 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-09-30 20:50:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:04,894 INFO L225 Difference]: With dead ends: 177 [2018-09-30 20:50:04,895 INFO L226 Difference]: Without dead ends: 175 [2018-09-30 20:50:04,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:50:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-30 20:50:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-30 20:50:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-30 20:50:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-09-30 20:50:04,898 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 170 [2018-09-30 20:50:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:04,899 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-09-30 20:50:04,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 20:50:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-09-30 20:50:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-30 20:50:04,900 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:04,900 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:04,900 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:04,900 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:04,900 INFO L82 PathProgramCache]: Analyzing trace with hash -11968144, now seen corresponding path program 42 times [2018-09-30 20:50:04,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:04,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:04,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:04,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:04,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:05,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:05,638 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:05,638 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 [2018-09-30 20:50:05,645 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:50:05,694 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 20:50:05,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:05,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:06,059 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:06,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-30 20:50:06,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 20:50:06,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 20:50:06,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:06,061 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 45 states. [2018-09-30 20:50:06,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:06,381 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-09-30 20:50:06,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 20:50:06,381 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-09-30 20:50:06,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:06,382 INFO L225 Difference]: With dead ends: 181 [2018-09-30 20:50:06,383 INFO L226 Difference]: Without dead ends: 179 [2018-09-30 20:50:06,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:50:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-30 20:50:06,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-30 20:50:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 20:50:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-09-30 20:50:06,387 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 174 [2018-09-30 20:50:06,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:06,387 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-09-30 20:50:06,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 20:50:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-09-30 20:50:06,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 20:50:06,388 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:06,388 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:06,388 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:06,389 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:06,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516698, now seen corresponding path program 43 times [2018-09-30 20:50:06,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:06,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:06,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:06,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:06,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:07,387 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:07,387 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:07,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:07,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:07,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:07,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 20:50:07,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 20:50:07,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 20:50:07,741 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:07,741 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 46 states. [2018-09-30 20:50:07,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:07,946 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-09-30 20:50:07,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 20:50:07,946 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-09-30 20:50:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:07,948 INFO L225 Difference]: With dead ends: 185 [2018-09-30 20:50:07,948 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 20:50:07,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:50:07,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 20:50:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-30 20:50:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-30 20:50:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-09-30 20:50:07,951 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 178 [2018-09-30 20:50:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:07,952 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-09-30 20:50:07,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 20:50:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-09-30 20:50:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-30 20:50:07,953 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:07,953 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:07,953 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:07,954 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:07,954 INFO L82 PathProgramCache]: Analyzing trace with hash -321345596, now seen corresponding path program 44 times [2018-09-30 20:50:07,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:07,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:07,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:07,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:07,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:08,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:08,291 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 [2018-09-30 20:50:08,299 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:50:08,338 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:50:08,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:08,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:08,650 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:08,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 20:50:08,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 20:50:08,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 20:50:08,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:08,651 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 47 states. [2018-09-30 20:50:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:09,062 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-09-30 20:50:09,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 20:50:09,063 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-09-30 20:50:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:09,064 INFO L225 Difference]: With dead ends: 189 [2018-09-30 20:50:09,064 INFO L226 Difference]: Without dead ends: 187 [2018-09-30 20:50:09,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:50:09,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-30 20:50:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-30 20:50:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-30 20:50:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-09-30 20:50:09,067 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 182 [2018-09-30 20:50:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:09,068 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-09-30 20:50:09,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 20:50:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-09-30 20:50:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-30 20:50:09,069 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:09,069 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:09,069 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:09,070 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:09,070 INFO L82 PathProgramCache]: Analyzing trace with hash -548899986, now seen corresponding path program 45 times [2018-09-30 20:50:09,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:09,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:09,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:09,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:09,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:09,404 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:09,404 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:09,412 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:50:09,469 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-30 20:50:09,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:09,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:10,394 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:10,395 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 20:50:10,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 20:50:10,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 20:50:10,396 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:10,396 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 48 states. [2018-09-30 20:50:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:11,252 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-09-30 20:50:11,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 20:50:11,252 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-09-30 20:50:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:11,254 INFO L225 Difference]: With dead ends: 193 [2018-09-30 20:50:11,254 INFO L226 Difference]: Without dead ends: 191 [2018-09-30 20:50:11,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:50:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-30 20:50:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-30 20:50:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-30 20:50:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-09-30 20:50:11,257 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 186 [2018-09-30 20:50:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:11,257 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-09-30 20:50:11,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 20:50:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-09-30 20:50:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-30 20:50:11,258 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:11,258 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:11,258 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:11,258 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:11,259 INFO L82 PathProgramCache]: Analyzing trace with hash 943086104, now seen corresponding path program 46 times [2018-09-30 20:50:11,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:11,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:11,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:11,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:11,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:12,559 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:12,559 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 [2018-09-30 20:50:12,566 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:50:12,604 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:50:12,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:12,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:13,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:13,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-30 20:50:13,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 20:50:13,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 20:50:13,290 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:13,290 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 49 states. [2018-09-30 20:50:13,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:13,495 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-09-30 20:50:13,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 20:50:13,495 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-09-30 20:50:13,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:13,497 INFO L225 Difference]: With dead ends: 197 [2018-09-30 20:50:13,497 INFO L226 Difference]: Without dead ends: 195 [2018-09-30 20:50:13,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-09-30 20:50:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-30 20:50:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-30 20:50:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-30 20:50:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-09-30 20:50:13,500 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 190 [2018-09-30 20:50:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:13,501 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-09-30 20:50:13,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 20:50:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-09-30 20:50:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-30 20:50:13,502 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:13,502 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:13,502 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:13,503 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:13,503 INFO L82 PathProgramCache]: Analyzing trace with hash 85777346, now seen corresponding path program 47 times [2018-09-30 20:50:13,503 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:13,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:13,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:13,504 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:13,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:14,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:14,269 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 [2018-09-30 20:50:14,276 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:50:14,353 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-30 20:50:14,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:14,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:14,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:14,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:14,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 20:50:14,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 20:50:14,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 20:50:14,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:14,880 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 50 states. [2018-09-30 20:50:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:15,172 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-09-30 20:50:15,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 20:50:15,172 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-09-30 20:50:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:15,173 INFO L225 Difference]: With dead ends: 201 [2018-09-30 20:50:15,174 INFO L226 Difference]: Without dead ends: 199 [2018-09-30 20:50:15,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:50:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-30 20:50:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-30 20:50:15,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 20:50:15,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-09-30 20:50:15,178 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 194 [2018-09-30 20:50:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:15,178 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-09-30 20:50:15,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 20:50:15,178 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-09-30 20:50:15,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 20:50:15,179 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:15,179 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:15,179 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:15,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:15,180 INFO L82 PathProgramCache]: Analyzing trace with hash 305559660, now seen corresponding path program 48 times [2018-09-30 20:50:15,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:15,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:15,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:15,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:15,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:16,201 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:16,201 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 [2018-09-30 20:50:16,209 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:50:16,277 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 20:50:16,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:16,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:16,621 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:16,622 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-30 20:50:16,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 20:50:16,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 20:50:16,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:16,622 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 51 states. [2018-09-30 20:50:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:16,920 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-09-30 20:50:16,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 20:50:16,921 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-09-30 20:50:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:16,922 INFO L225 Difference]: With dead ends: 205 [2018-09-30 20:50:16,922 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 20:50:16,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:50:16,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 20:50:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-30 20:50:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-30 20:50:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-09-30 20:50:16,926 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 198 [2018-09-30 20:50:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:16,926 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-09-30 20:50:16,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 20:50:16,926 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-09-30 20:50:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-30 20:50:16,927 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:16,927 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:16,927 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:16,928 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:16,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1971474410, now seen corresponding path program 49 times [2018-09-30 20:50:16,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:16,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:16,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:16,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:16,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:17,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:17,269 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 [2018-09-30 20:50:17,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:17,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:17,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:17,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 20:50:17,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 20:50:17,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 20:50:17,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:17,652 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 52 states. [2018-09-30 20:50:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:17,985 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-09-30 20:50:17,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 20:50:17,985 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-09-30 20:50:17,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:17,987 INFO L225 Difference]: With dead ends: 209 [2018-09-30 20:50:17,987 INFO L226 Difference]: Without dead ends: 207 [2018-09-30 20:50:17,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:50:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-30 20:50:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-30 20:50:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-30 20:50:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-09-30 20:50:17,991 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 202 [2018-09-30 20:50:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:17,991 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-09-30 20:50:17,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 20:50:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-09-30 20:50:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-30 20:50:17,992 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:17,992 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:17,993 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:17,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:17,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1750269248, now seen corresponding path program 50 times [2018-09-30 20:50:17,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:17,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:17,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:17,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:17,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:18,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:18,369 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:18,378 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:50:18,428 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:50:18,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:18,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:19,328 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:19,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 20:50:19,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 20:50:19,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 20:50:19,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:19,329 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 53 states. [2018-09-30 20:50:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:19,620 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-09-30 20:50:19,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 20:50:19,620 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-09-30 20:50:19,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:19,622 INFO L225 Difference]: With dead ends: 213 [2018-09-30 20:50:19,622 INFO L226 Difference]: Without dead ends: 211 [2018-09-30 20:50:19,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:50:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-30 20:50:19,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-30 20:50:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-30 20:50:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-09-30 20:50:19,626 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 206 [2018-09-30 20:50:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:19,626 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-09-30 20:50:19,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 20:50:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-09-30 20:50:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-30 20:50:19,628 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:19,628 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:19,628 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:19,628 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:19,628 INFO L82 PathProgramCache]: Analyzing trace with hash 37679210, now seen corresponding path program 51 times [2018-09-30 20:50:19,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:19,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:19,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:19,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:19,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:20,008 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:20,008 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:20,020 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:50:20,091 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-30 20:50:20,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:20,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:21,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:21,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-30 20:50:21,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 20:50:21,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 20:50:21,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:21,508 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 54 states. [2018-09-30 20:50:21,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:21,830 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-09-30 20:50:21,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 20:50:21,830 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-09-30 20:50:21,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:21,832 INFO L225 Difference]: With dead ends: 217 [2018-09-30 20:50:21,832 INFO L226 Difference]: Without dead ends: 215 [2018-09-30 20:50:21,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:50:21,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-30 20:50:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-30 20:50:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-30 20:50:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-09-30 20:50:21,834 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 210 [2018-09-30 20:50:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:21,834 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-09-30 20:50:21,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 20:50:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-09-30 20:50:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-30 20:50:21,835 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:21,836 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:21,836 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:21,836 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:21,836 INFO L82 PathProgramCache]: Analyzing trace with hash -781321964, now seen corresponding path program 52 times [2018-09-30 20:50:21,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:21,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:21,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:21,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:21,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:22,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:22,255 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 [2018-09-30 20:50:22,263 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:50:22,307 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:50:22,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:22,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:22,743 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:22,744 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 20:50:22,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 20:50:22,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 20:50:22,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:22,745 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 55 states. [2018-09-30 20:50:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:23,121 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-09-30 20:50:23,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 20:50:23,122 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-09-30 20:50:23,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:23,123 INFO L225 Difference]: With dead ends: 221 [2018-09-30 20:50:23,123 INFO L226 Difference]: Without dead ends: 219 [2018-09-30 20:50:23,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-30 20:50:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-30 20:50:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 20:50:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-09-30 20:50:23,127 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 214 [2018-09-30 20:50:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:23,127 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-09-30 20:50:23,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 20:50:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-09-30 20:50:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 20:50:23,128 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:23,128 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:23,128 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:23,128 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:23,129 INFO L82 PathProgramCache]: Analyzing trace with hash -348873538, now seen corresponding path program 53 times [2018-09-30 20:50:23,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:23,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:23,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:23,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:23,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:23,673 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:23,673 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 [2018-09-30 20:50:23,681 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:50:23,752 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-30 20:50:23,753 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:23,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:24,154 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:24,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 20:50:24,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 20:50:24,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 20:50:24,155 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:24,156 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 56 states. [2018-09-30 20:50:24,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:24,656 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-09-30 20:50:24,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 20:50:24,656 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-09-30 20:50:24,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:24,657 INFO L225 Difference]: With dead ends: 225 [2018-09-30 20:50:24,657 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 20:50:24,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:50:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 20:50:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-30 20:50:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-30 20:50:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-09-30 20:50:24,660 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 218 [2018-09-30 20:50:24,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:24,661 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-09-30 20:50:24,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 20:50:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-09-30 20:50:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-30 20:50:24,662 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:24,662 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:24,662 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:24,662 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:24,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1269998744, now seen corresponding path program 54 times [2018-09-30 20:50:24,662 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:24,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:24,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:24,663 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:24,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:25,029 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:25,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:25,036 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:50:25,109 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 20:50:25,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:25,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:25,519 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:25,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-30 20:50:25,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 20:50:25,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 20:50:25,520 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:25,521 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 57 states. [2018-09-30 20:50:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:25,890 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-09-30 20:50:25,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 20:50:25,891 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-09-30 20:50:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:25,892 INFO L225 Difference]: With dead ends: 229 [2018-09-30 20:50:25,892 INFO L226 Difference]: Without dead ends: 227 [2018-09-30 20:50:25,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:50:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-30 20:50:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-30 20:50:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-30 20:50:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-09-30 20:50:25,895 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 222 [2018-09-30 20:50:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:25,896 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-09-30 20:50:25,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 20:50:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-09-30 20:50:25,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-30 20:50:25,897 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:25,897 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:25,897 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:25,897 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:25,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1338854126, now seen corresponding path program 55 times [2018-09-30 20:50:25,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:25,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:25,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:25,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:25,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:26,232 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:26,232 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:26,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:26,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:26,666 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:26,667 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 20:50:26,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 20:50:26,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 20:50:26,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:26,668 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 58 states. [2018-09-30 20:50:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:27,061 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-09-30 20:50:27,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 20:50:27,061 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-09-30 20:50:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:27,063 INFO L225 Difference]: With dead ends: 233 [2018-09-30 20:50:27,063 INFO L226 Difference]: Without dead ends: 231 [2018-09-30 20:50:27,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:50:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-30 20:50:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-30 20:50:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-30 20:50:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-09-30 20:50:27,067 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 226 [2018-09-30 20:50:27,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:27,067 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-09-30 20:50:27,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 20:50:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-09-30 20:50:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-30 20:50:27,068 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:27,069 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:27,069 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:27,069 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:27,069 INFO L82 PathProgramCache]: Analyzing trace with hash 555690428, now seen corresponding path program 56 times [2018-09-30 20:50:27,069 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:27,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:27,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:27,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:27,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:27,418 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:27,418 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:27,426 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:50:27,480 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:50:27,480 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:27,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:27,982 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:27,982 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 20:50:27,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 20:50:27,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 20:50:27,983 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:27,983 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 59 states. [2018-09-30 20:50:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:28,379 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-09-30 20:50:28,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 20:50:28,380 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-09-30 20:50:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:28,381 INFO L225 Difference]: With dead ends: 237 [2018-09-30 20:50:28,381 INFO L226 Difference]: Without dead ends: 235 [2018-09-30 20:50:28,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:50:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-30 20:50:28,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-30 20:50:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-30 20:50:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-09-30 20:50:28,385 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 230 [2018-09-30 20:50:28,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:28,385 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-09-30 20:50:28,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 20:50:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-09-30 20:50:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-30 20:50:28,386 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:28,386 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:28,386 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:28,386 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:28,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1475528346, now seen corresponding path program 57 times [2018-09-30 20:50:28,386 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:28,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:28,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:28,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:28,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:28,790 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:28,790 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:28,797 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:50:28,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-30 20:50:28,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:28,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:29,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:29,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-30 20:50:29,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 20:50:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 20:50:29,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:29,280 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 60 states. [2018-09-30 20:50:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:29,743 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-09-30 20:50:29,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 20:50:29,745 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-09-30 20:50:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:29,746 INFO L225 Difference]: With dead ends: 241 [2018-09-30 20:50:29,746 INFO L226 Difference]: Without dead ends: 239 [2018-09-30 20:50:29,746 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:50:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-30 20:50:29,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-30 20:50:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 20:50:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-09-30 20:50:29,748 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 234 [2018-09-30 20:50:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:29,749 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-09-30 20:50:29,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 20:50:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-09-30 20:50:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 20:50:29,750 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:29,750 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:29,750 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:29,750 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:29,750 INFO L82 PathProgramCache]: Analyzing trace with hash -457743344, now seen corresponding path program 58 times [2018-09-30 20:50:29,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:29,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:29,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:29,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:29,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:30,083 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:30,083 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 [2018-09-30 20:50:30,093 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:50:30,134 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:50:30,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:30,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:30,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:30,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 20:50:30,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 20:50:30,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 20:50:30,587 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:30,587 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 61 states. [2018-09-30 20:50:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:30,884 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-09-30 20:50:30,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 20:50:30,885 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-09-30 20:50:30,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:30,886 INFO L225 Difference]: With dead ends: 245 [2018-09-30 20:50:30,886 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 20:50:30,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:50:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 20:50:30,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-30 20:50:30,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-30 20:50:30,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-09-30 20:50:30,889 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 238 [2018-09-30 20:50:30,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:30,889 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-09-30 20:50:30,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 20:50:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-09-30 20:50:30,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-30 20:50:30,891 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:30,891 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:30,891 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:30,891 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:30,891 INFO L82 PathProgramCache]: Analyzing trace with hash 362293690, now seen corresponding path program 59 times [2018-09-30 20:50:30,891 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:30,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:30,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:30,892 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:30,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:31,254 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:31,254 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:31,261 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:50:31,339 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-30 20:50:31,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:31,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:31,761 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:31,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 20:50:31,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 20:50:31,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 20:50:31,762 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:31,762 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 62 states. [2018-09-30 20:50:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:32,164 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-09-30 20:50:32,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 20:50:32,165 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-09-30 20:50:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:32,166 INFO L225 Difference]: With dead ends: 249 [2018-09-30 20:50:32,166 INFO L226 Difference]: Without dead ends: 247 [2018-09-30 20:50:32,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:50:32,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-30 20:50:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-30 20:50:32,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-30 20:50:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-09-30 20:50:32,169 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 242 [2018-09-30 20:50:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:32,170 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-09-30 20:50:32,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 20:50:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-09-30 20:50:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-30 20:50:32,171 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:32,171 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:32,171 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:32,171 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:32,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1209398684, now seen corresponding path program 60 times [2018-09-30 20:50:32,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:32,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:32,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:32,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:32,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:32,730 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:32,730 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 [2018-09-30 20:50:32,738 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:50:32,814 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-30 20:50:32,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:32,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:33,361 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:33,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-30 20:50:33,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 20:50:33,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 20:50:33,362 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:33,363 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 63 states. [2018-09-30 20:50:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:33,790 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-09-30 20:50:33,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 20:50:33,790 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-09-30 20:50:33,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:33,792 INFO L225 Difference]: With dead ends: 253 [2018-09-30 20:50:33,792 INFO L226 Difference]: Without dead ends: 251 [2018-09-30 20:50:33,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:50:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-30 20:50:33,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-30 20:50:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-30 20:50:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-09-30 20:50:33,795 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 246 [2018-09-30 20:50:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:33,795 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-09-30 20:50:33,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 20:50:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-09-30 20:50:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-30 20:50:33,796 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:33,796 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:33,797 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:33,797 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:33,797 INFO L82 PathProgramCache]: Analyzing trace with hash 665290254, now seen corresponding path program 61 times [2018-09-30 20:50:33,797 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:33,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:33,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:33,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:33,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:34,241 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:34,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:34,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:34,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:34,973 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:34,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 20:50:34,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 20:50:34,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 20:50:34,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:34,975 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 64 states. [2018-09-30 20:50:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:35,362 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-09-30 20:50:35,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 20:50:35,363 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-09-30 20:50:35,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:35,364 INFO L225 Difference]: With dead ends: 257 [2018-09-30 20:50:35,365 INFO L226 Difference]: Without dead ends: 255 [2018-09-30 20:50:35,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:50:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-30 20:50:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-30 20:50:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-30 20:50:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-09-30 20:50:35,368 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 250 [2018-09-30 20:50:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:35,368 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-09-30 20:50:35,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 20:50:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-09-30 20:50:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-30 20:50:35,369 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:35,369 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:35,370 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:35,370 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:35,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1066081464, now seen corresponding path program 62 times [2018-09-30 20:50:35,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:35,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:35,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:35,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:35,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:35,752 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:35,753 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 [2018-09-30 20:50:35,762 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:50:35,811 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:50:35,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:35,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:36,262 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:36,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 20:50:36,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 20:50:36,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 20:50:36,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:36,263 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 65 states. [2018-09-30 20:50:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:36,578 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-09-30 20:50:36,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 20:50:36,578 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-09-30 20:50:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:36,580 INFO L225 Difference]: With dead ends: 261 [2018-09-30 20:50:36,580 INFO L226 Difference]: Without dead ends: 259 [2018-09-30 20:50:36,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:50:36,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-30 20:50:36,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-09-30 20:50:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-30 20:50:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-09-30 20:50:36,584 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 254 [2018-09-30 20:50:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:36,584 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-09-30 20:50:36,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 20:50:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-09-30 20:50:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-30 20:50:36,586 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:36,586 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:36,586 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:36,586 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:36,586 INFO L82 PathProgramCache]: Analyzing trace with hash -116437406, now seen corresponding path program 63 times [2018-09-30 20:50:36,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:36,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:36,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:36,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:36,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:37,046 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:37,046 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 [2018-09-30 20:50:37,055 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:50:37,152 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-30 20:50:37,153 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:37,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:37,586 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:37,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-30 20:50:37,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 20:50:37,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 20:50:37,587 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:37,587 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 66 states. [2018-09-30 20:50:37,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:37,909 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-09-30 20:50:37,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 20:50:37,910 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-09-30 20:50:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:37,911 INFO L225 Difference]: With dead ends: 265 [2018-09-30 20:50:37,911 INFO L226 Difference]: Without dead ends: 263 [2018-09-30 20:50:37,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-30 20:50:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-09-30 20:50:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-09-30 20:50:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-09-30 20:50:37,915 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 258 [2018-09-30 20:50:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:37,915 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-09-30 20:50:37,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 20:50:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-09-30 20:50:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-30 20:50:37,916 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:37,917 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:37,917 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:37,917 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:37,917 INFO L82 PathProgramCache]: Analyzing trace with hash 208575244, now seen corresponding path program 64 times [2018-09-30 20:50:37,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:37,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:37,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:37,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:37,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:38,337 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:38,337 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 [2018-09-30 20:50:38,346 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:50:38,396 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:50:38,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:38,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:38,843 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:38,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 20:50:38,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 20:50:38,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 20:50:38,845 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:38,845 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 67 states. [2018-09-30 20:50:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:39,198 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-09-30 20:50:39,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 20:50:39,198 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-09-30 20:50:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:39,200 INFO L225 Difference]: With dead ends: 269 [2018-09-30 20:50:39,200 INFO L226 Difference]: Without dead ends: 267 [2018-09-30 20:50:39,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:50:39,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-30 20:50:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-09-30 20:50:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-09-30 20:50:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-09-30 20:50:39,204 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 262 [2018-09-30 20:50:39,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:39,204 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-09-30 20:50:39,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 20:50:39,204 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-09-30 20:50:39,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-30 20:50:39,206 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:39,206 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:39,206 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:39,206 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:39,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1868332362, now seen corresponding path program 65 times [2018-09-30 20:50:39,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:39,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:39,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:39,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:39,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:39,843 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:39,843 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 [2018-09-30 20:50:39,849 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:50:39,941 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-30 20:50:39,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:39,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:40,405 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:40,405 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 20:50:40,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 20:50:40,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 20:50:40,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:40,406 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 68 states. [2018-09-30 20:50:40,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:40,900 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-09-30 20:50:40,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 20:50:40,901 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-09-30 20:50:40,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:40,902 INFO L225 Difference]: With dead ends: 273 [2018-09-30 20:50:40,902 INFO L226 Difference]: Without dead ends: 271 [2018-09-30 20:50:40,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:50:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-09-30 20:50:40,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-09-30 20:50:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-09-30 20:50:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-09-30 20:50:40,907 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 266 [2018-09-30 20:50:40,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:40,907 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-09-30 20:50:40,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 20:50:40,908 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-09-30 20:50:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-30 20:50:40,909 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:40,909 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:40,909 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:40,909 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:40,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1687648928, now seen corresponding path program 66 times [2018-09-30 20:50:40,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:40,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:40,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:40,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:40,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:41,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:41,331 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 [2018-09-30 20:50:41,338 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:50:41,429 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-30 20:50:41,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:41,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:41,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:41,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-30 20:50:41,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 20:50:41,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 20:50:41,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:41,909 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 69 states. [2018-09-30 20:50:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:42,286 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-09-30 20:50:42,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 20:50:42,287 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-09-30 20:50:42,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:42,288 INFO L225 Difference]: With dead ends: 277 [2018-09-30 20:50:42,288 INFO L226 Difference]: Without dead ends: 275 [2018-09-30 20:50:42,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-09-30 20:50:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-09-30 20:50:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-09-30 20:50:42,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-09-30 20:50:42,291 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 270 [2018-09-30 20:50:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:42,291 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-09-30 20:50:42,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 20:50:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-09-30 20:50:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-30 20:50:42,292 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:42,293 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:42,293 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:42,293 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:42,293 INFO L82 PathProgramCache]: Analyzing trace with hash -516414710, now seen corresponding path program 67 times [2018-09-30 20:50:42,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:42,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:42,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:42,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:42,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:42,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:42,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:42,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:42,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:43,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:43,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 20:50:43,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 20:50:43,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 20:50:43,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:43,241 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 70 states. [2018-09-30 20:50:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:43,608 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-09-30 20:50:43,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 20:50:43,608 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-09-30 20:50:43,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:43,609 INFO L225 Difference]: With dead ends: 281 [2018-09-30 20:50:43,610 INFO L226 Difference]: Without dead ends: 279 [2018-09-30 20:50:43,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:50:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-09-30 20:50:43,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-09-30 20:50:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-30 20:50:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-09-30 20:50:43,614 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 274 [2018-09-30 20:50:43,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:43,614 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-09-30 20:50:43,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 20:50:43,614 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-09-30 20:50:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-30 20:50:43,615 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:43,616 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:43,616 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:43,616 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:43,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1431100340, now seen corresponding path program 68 times [2018-09-30 20:50:43,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:43,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:43,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:43,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:43,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:44,044 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:44,044 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:44,051 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:50:44,102 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:50:44,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:44,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:44,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:44,611 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 20:50:44,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 20:50:44,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 20:50:44,612 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:44,612 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 71 states. [2018-09-30 20:50:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:45,145 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-09-30 20:50:45,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 20:50:45,146 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-09-30 20:50:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:45,147 INFO L225 Difference]: With dead ends: 285 [2018-09-30 20:50:45,148 INFO L226 Difference]: Without dead ends: 283 [2018-09-30 20:50:45,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-30 20:50:45,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-09-30 20:50:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-09-30 20:50:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-09-30 20:50:45,151 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 278 [2018-09-30 20:50:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:45,151 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-09-30 20:50:45,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 20:50:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-09-30 20:50:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-30 20:50:45,152 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:45,152 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:45,153 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:45,153 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:45,153 INFO L82 PathProgramCache]: Analyzing trace with hash -912183458, now seen corresponding path program 69 times [2018-09-30 20:50:45,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:45,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:45,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:45,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:45,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:45,624 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:45,624 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 [2018-09-30 20:50:45,631 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:50:45,729 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-30 20:50:45,729 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:45,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:46,466 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:46,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-30 20:50:46,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 20:50:46,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 20:50:46,467 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:46,467 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 72 states. [2018-09-30 20:50:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:46,840 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-09-30 20:50:46,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 20:50:46,841 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-09-30 20:50:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:46,842 INFO L225 Difference]: With dead ends: 289 [2018-09-30 20:50:46,843 INFO L226 Difference]: Without dead ends: 287 [2018-09-30 20:50:46,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:50:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-09-30 20:50:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-09-30 20:50:46,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-09-30 20:50:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-09-30 20:50:46,846 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 282 [2018-09-30 20:50:46,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:46,846 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-09-30 20:50:46,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 20:50:46,846 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-09-30 20:50:46,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-30 20:50:46,847 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:46,848 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:46,848 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:46,848 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:46,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1896899064, now seen corresponding path program 70 times [2018-09-30 20:50:46,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:46,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:46,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:46,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:46,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:47,305 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:47,305 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:47,311 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:50:47,362 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:50:47,362 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:47,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:47,840 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:47,841 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-30 20:50:47,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 20:50:47,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 20:50:47,842 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:47,842 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 73 states. [2018-09-30 20:50:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:48,371 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-09-30 20:50:48,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 20:50:48,371 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-09-30 20:50:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:48,373 INFO L225 Difference]: With dead ends: 293 [2018-09-30 20:50:48,373 INFO L226 Difference]: Without dead ends: 291 [2018-09-30 20:50:48,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:48,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-09-30 20:50:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-09-30 20:50:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-09-30 20:50:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-09-30 20:50:48,376 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 286 [2018-09-30 20:50:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:48,377 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-09-30 20:50:48,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 20:50:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-09-30 20:50:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-09-30 20:50:48,378 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:48,378 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:48,379 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:48,379 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:48,379 INFO L82 PathProgramCache]: Analyzing trace with hash 347252658, now seen corresponding path program 71 times [2018-09-30 20:50:48,379 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:48,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:48,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:48,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:48,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:49,057 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:49,057 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 [2018-09-30 20:50:49,064 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:50:49,168 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-30 20:50:49,168 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:49,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:49,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:49,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-30 20:50:49,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 20:50:49,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 20:50:49,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:49,682 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 74 states. [2018-09-30 20:50:50,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:50,209 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-09-30 20:50:50,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 20:50:50,209 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-09-30 20:50:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:50,211 INFO L225 Difference]: With dead ends: 297 [2018-09-30 20:50:50,211 INFO L226 Difference]: Without dead ends: 295 [2018-09-30 20:50:50,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:50:50,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-09-30 20:50:50,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-09-30 20:50:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-09-30 20:50:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-09-30 20:50:50,214 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 290 [2018-09-30 20:50:50,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:50,214 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-09-30 20:50:50,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 20:50:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-09-30 20:50:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-30 20:50:50,216 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:50,216 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:50,216 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:50,216 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:50,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1994077092, now seen corresponding path program 72 times [2018-09-30 20:50:50,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:50,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:50,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:50,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:50,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:50,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:50,680 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:50,689 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:50:50,789 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-30 20:50:50,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:50,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:51,277 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:51,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-30 20:50:51,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-30 20:50:51,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-30 20:50:51,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:51,278 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 75 states. [2018-09-30 20:50:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:51,729 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-09-30 20:50:51,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 20:50:51,729 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-09-30 20:50:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:51,730 INFO L225 Difference]: With dead ends: 301 [2018-09-30 20:50:51,730 INFO L226 Difference]: Without dead ends: 299 [2018-09-30 20:50:51,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:51,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-09-30 20:50:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-09-30 20:50:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-09-30 20:50:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-09-30 20:50:51,733 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 294 [2018-09-30 20:50:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:51,734 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-09-30 20:50:51,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-30 20:50:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-09-30 20:50:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-30 20:50:51,735 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:51,735 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:51,735 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:51,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:51,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2034273286, now seen corresponding path program 73 times [2018-09-30 20:50:51,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:51,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:51,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:51,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:51,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:52,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:52,184 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 [2018-09-30 20:50:52,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:52,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:52,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:52,747 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-30 20:50:52,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 20:50:52,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 20:50:52,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:52,748 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 76 states. [2018-09-30 20:50:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:53,216 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-09-30 20:50:53,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 20:50:53,217 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-09-30 20:50:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:53,218 INFO L225 Difference]: With dead ends: 305 [2018-09-30 20:50:53,219 INFO L226 Difference]: Without dead ends: 303 [2018-09-30 20:50:53,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:53,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-30 20:50:53,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-09-30 20:50:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-09-30 20:50:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-09-30 20:50:53,223 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 298 [2018-09-30 20:50:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:53,223 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-09-30 20:50:53,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 20:50:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-09-30 20:50:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-30 20:50:53,225 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:53,225 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:53,225 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:53,225 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:53,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1891657392, now seen corresponding path program 74 times [2018-09-30 20:50:53,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:53,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:53,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:53,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:50:53,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:53,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:53,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:53,701 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:50:53,756 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:50:53,756 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:53,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:54,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:54,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-30 20:50:54,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 20:50:54,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 20:50:54,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:54,317 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 77 states. [2018-09-30 20:50:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:54,688 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-09-30 20:50:54,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 20:50:54,689 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-09-30 20:50:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:54,690 INFO L225 Difference]: With dead ends: 309 [2018-09-30 20:50:54,690 INFO L226 Difference]: Without dead ends: 307 [2018-09-30 20:50:54,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:54,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-09-30 20:50:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-09-30 20:50:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-09-30 20:50:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-09-30 20:50:54,693 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 302 [2018-09-30 20:50:54,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:54,693 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-09-30 20:50:54,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 20:50:54,693 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-09-30 20:50:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-09-30 20:50:54,694 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:54,694 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:54,695 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:54,695 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:54,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1709253542, now seen corresponding path program 75 times [2018-09-30 20:50:54,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:54,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:54,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:54,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:54,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:55,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:55,367 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 [2018-09-30 20:50:55,374 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:50:55,498 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-09-30 20:50:55,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:55,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:56,010 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:56,010 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-30 20:50:56,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 20:50:56,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 20:50:56,011 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:56,011 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 78 states. [2018-09-30 20:50:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:56,639 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-09-30 20:50:56,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 20:50:56,640 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-09-30 20:50:56,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:56,641 INFO L225 Difference]: With dead ends: 313 [2018-09-30 20:50:56,642 INFO L226 Difference]: Without dead ends: 311 [2018-09-30 20:50:56,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:50:56,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-09-30 20:50:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-09-30 20:50:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-09-30 20:50:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-09-30 20:50:56,646 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 306 [2018-09-30 20:50:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:56,646 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-09-30 20:50:56,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 20:50:56,646 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-09-30 20:50:56,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-30 20:50:56,647 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:56,647 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:56,647 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:56,648 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:56,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1586916612, now seen corresponding path program 76 times [2018-09-30 20:50:56,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:56,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:56,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:56,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:56,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:57,111 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:57,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:50:57,119 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:50:57,178 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:50:57,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:57,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:57,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:57,715 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-30 20:50:57,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-30 20:50:57,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-30 20:50:57,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:57,716 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 79 states. [2018-09-30 20:50:58,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:58,121 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-09-30 20:50:58,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 20:50:58,122 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-09-30 20:50:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:58,123 INFO L225 Difference]: With dead ends: 317 [2018-09-30 20:50:58,124 INFO L226 Difference]: Without dead ends: 315 [2018-09-30 20:50:58,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-09-30 20:50:58,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-09-30 20:50:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-09-30 20:50:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-09-30 20:50:58,126 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 310 [2018-09-30 20:50:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:58,127 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-09-30 20:50:58,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-30 20:50:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-09-30 20:50:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-09-30 20:50:58,128 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:58,128 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:58,128 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:58,128 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:58,129 INFO L82 PathProgramCache]: Analyzing trace with hash 102865070, now seen corresponding path program 77 times [2018-09-30 20:50:58,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:58,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:58,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:58,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:58,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:50:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:58,609 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:50:58,609 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 [2018-09-30 20:50:58,616 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:50:58,730 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-09-30 20:50:58,730 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:50:58,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:50:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:50:59,257 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:50:59,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-30 20:50:59,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 20:50:59,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 20:50:59,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:50:59,259 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 80 states. [2018-09-30 20:50:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:50:59,771 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-09-30 20:50:59,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 20:50:59,771 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-09-30 20:50:59,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:50:59,773 INFO L225 Difference]: With dead ends: 321 [2018-09-30 20:50:59,773 INFO L226 Difference]: Without dead ends: 319 [2018-09-30 20:50:59,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:50:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-09-30 20:50:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-09-30 20:50:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-09-30 20:50:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-09-30 20:50:59,777 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 314 [2018-09-30 20:50:59,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:50:59,777 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-09-30 20:50:59,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 20:50:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-09-30 20:50:59,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-30 20:50:59,778 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:50:59,778 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2018-09-30 20:50:59,778 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:50:59,779 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:50:59,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670360, now seen corresponding path program 78 times [2018-09-30 20:50:59,779 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:50:59,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:50:59,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:59,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:50:59,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:50:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:00,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:00,480 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 [2018-09-30 20:51:00,487 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:51:00,603 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-09-30 20:51:00,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:00,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:01,151 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:01,151 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-30 20:51:01,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-30 20:51:01,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-30 20:51:01,152 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:01,152 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 81 states. [2018-09-30 20:51:01,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:01,634 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-09-30 20:51:01,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 20:51:01,634 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-09-30 20:51:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:01,636 INFO L225 Difference]: With dead ends: 325 [2018-09-30 20:51:01,636 INFO L226 Difference]: Without dead ends: 323 [2018-09-30 20:51:01,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:51:01,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-09-30 20:51:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-09-30 20:51:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-09-30 20:51:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-09-30 20:51:01,639 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 318 [2018-09-30 20:51:01,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:01,639 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-09-30 20:51:01,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-30 20:51:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-09-30 20:51:01,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-30 20:51:01,640 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:01,640 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:01,641 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:01,641 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:01,641 INFO L82 PathProgramCache]: Analyzing trace with hash 941408514, now seen corresponding path program 79 times [2018-09-30 20:51:01,641 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:01,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:01,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:01,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:01,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:02,199 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:02,200 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 [2018-09-30 20:51:02,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:51:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:02,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:02,827 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:02,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-30 20:51:02,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 20:51:02,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 20:51:02,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:02,828 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 82 states. [2018-09-30 20:51:03,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:03,306 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-09-30 20:51:03,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 20:51:03,307 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-09-30 20:51:03,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:03,308 INFO L225 Difference]: With dead ends: 329 [2018-09-30 20:51:03,308 INFO L226 Difference]: Without dead ends: 327 [2018-09-30 20:51:03,308 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:51:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-09-30 20:51:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-09-30 20:51:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-09-30 20:51:03,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-09-30 20:51:03,311 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 322 [2018-09-30 20:51:03,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:03,312 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-09-30 20:51:03,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 20:51:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-09-30 20:51:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-09-30 20:51:03,313 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:03,313 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:03,313 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:03,313 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:03,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1279376812, now seen corresponding path program 80 times [2018-09-30 20:51:03,314 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:03,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:03,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:03,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:51:03,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:03,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:03,814 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 [2018-09-30 20:51:03,821 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:51:03,880 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:51:03,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:03,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:04,445 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:04,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-30 20:51:04,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 20:51:04,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 20:51:04,446 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:04,446 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 83 states. [2018-09-30 20:51:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:05,213 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-09-30 20:51:05,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 20:51:05,213 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-09-30 20:51:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:05,215 INFO L225 Difference]: With dead ends: 333 [2018-09-30 20:51:05,215 INFO L226 Difference]: Without dead ends: 331 [2018-09-30 20:51:05,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:51:05,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-09-30 20:51:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-09-30 20:51:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-09-30 20:51:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-09-30 20:51:05,218 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 326 [2018-09-30 20:51:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:05,218 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-09-30 20:51:05,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 20:51:05,218 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-09-30 20:51:05,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-30 20:51:05,219 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:05,219 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:05,220 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:05,220 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1763420842, now seen corresponding path program 81 times [2018-09-30 20:51:05,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:05,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:05,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:05,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:05,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:05,777 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:05,778 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 [2018-09-30 20:51:05,786 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:51:05,910 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-09-30 20:51:05,910 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:05,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:06,462 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:06,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-30 20:51:06,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 20:51:06,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 20:51:06,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:06,464 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 84 states. [2018-09-30 20:51:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:08,115 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-09-30 20:51:08,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 20:51:08,116 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-09-30 20:51:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:08,118 INFO L225 Difference]: With dead ends: 337 [2018-09-30 20:51:08,118 INFO L226 Difference]: Without dead ends: 335 [2018-09-30 20:51:08,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:51:08,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-09-30 20:51:08,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-09-30 20:51:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-09-30 20:51:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-09-30 20:51:08,121 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 330 [2018-09-30 20:51:08,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:08,121 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-09-30 20:51:08,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 20:51:08,121 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-09-30 20:51:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-09-30 20:51:08,122 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:08,123 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:08,123 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:08,123 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:08,123 INFO L82 PathProgramCache]: Analyzing trace with hash 431949824, now seen corresponding path program 82 times [2018-09-30 20:51:08,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:08,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:08,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:08,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:08,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:08,643 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:08,643 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 [2018-09-30 20:51:08,650 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:51:08,715 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:51:08,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:08,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:09,380 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:09,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-30 20:51:09,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-30 20:51:09,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-30 20:51:09,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:09,381 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 85 states. [2018-09-30 20:51:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:09,867 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-09-30 20:51:09,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 20:51:09,868 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-09-30 20:51:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:09,870 INFO L225 Difference]: With dead ends: 341 [2018-09-30 20:51:09,870 INFO L226 Difference]: Without dead ends: 339 [2018-09-30 20:51:09,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:51:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-09-30 20:51:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-09-30 20:51:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-09-30 20:51:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-09-30 20:51:09,873 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 334 [2018-09-30 20:51:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:09,873 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-09-30 20:51:09,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-30 20:51:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-09-30 20:51:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-30 20:51:09,875 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:09,875 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:09,875 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:09,875 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:09,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1967936938, now seen corresponding path program 83 times [2018-09-30 20:51:09,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:09,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:09,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:09,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:09,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:10,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:10,557 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 [2018-09-30 20:51:10,565 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:51:10,701 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-09-30 20:51:10,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:10,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:11,272 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:11,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-30 20:51:11,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 20:51:11,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 20:51:11,274 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:11,274 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 86 states. [2018-09-30 20:51:11,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:11,766 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-09-30 20:51:11,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-30 20:51:11,773 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-09-30 20:51:11,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:11,774 INFO L225 Difference]: With dead ends: 345 [2018-09-30 20:51:11,774 INFO L226 Difference]: Without dead ends: 343 [2018-09-30 20:51:11,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:51:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-09-30 20:51:11,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-09-30 20:51:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-09-30 20:51:11,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-09-30 20:51:11,777 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 338 [2018-09-30 20:51:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:11,778 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-09-30 20:51:11,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 20:51:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-09-30 20:51:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-30 20:51:11,779 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:11,779 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:11,779 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:11,780 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:11,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2000241068, now seen corresponding path program 84 times [2018-09-30 20:51:11,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:11,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:11,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:11,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:11,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:12,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:12,310 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 [2018-09-30 20:51:12,318 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:51:12,453 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-09-30 20:51:12,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:12,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:13,034 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:13,034 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-30 20:51:13,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-30 20:51:13,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-30 20:51:13,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:13,036 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 87 states. [2018-09-30 20:51:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:13,745 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-09-30 20:51:13,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 20:51:13,746 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-09-30 20:51:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:13,748 INFO L225 Difference]: With dead ends: 349 [2018-09-30 20:51:13,748 INFO L226 Difference]: Without dead ends: 347 [2018-09-30 20:51:13,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:51:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-09-30 20:51:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-09-30 20:51:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-09-30 20:51:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-09-30 20:51:13,751 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 342 [2018-09-30 20:51:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:13,752 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-09-30 20:51:13,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-30 20:51:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-09-30 20:51:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-09-30 20:51:13,754 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:13,754 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:13,754 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:13,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:13,754 INFO L82 PathProgramCache]: Analyzing trace with hash 304660990, now seen corresponding path program 85 times [2018-09-30 20:51:13,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:13,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:13,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:13,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:13,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:14,292 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:14,292 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 [2018-09-30 20:51:14,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:51:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:14,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:14,966 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:14,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-30 20:51:14,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 20:51:14,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 20:51:14,968 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:14,968 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 88 states. [2018-09-30 20:51:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:15,783 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-09-30 20:51:15,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-30 20:51:15,783 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-09-30 20:51:15,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:15,785 INFO L225 Difference]: With dead ends: 353 [2018-09-30 20:51:15,785 INFO L226 Difference]: Without dead ends: 351 [2018-09-30 20:51:15,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:51:15,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-09-30 20:51:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-09-30 20:51:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-09-30 20:51:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-09-30 20:51:15,787 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 346 [2018-09-30 20:51:15,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:15,788 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-09-30 20:51:15,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 20:51:15,788 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-09-30 20:51:15,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-30 20:51:15,789 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:15,789 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:15,789 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:15,789 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:15,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1311563944, now seen corresponding path program 86 times [2018-09-30 20:51:15,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:15,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:15,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:15,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:51:15,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:16,323 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:16,323 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 [2018-09-30 20:51:16,330 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:51:16,395 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:51:16,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:16,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:16,995 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:16,995 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-30 20:51:16,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 20:51:16,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 20:51:16,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:16,997 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 89 states. [2018-09-30 20:51:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:17,789 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-09-30 20:51:17,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 20:51:17,789 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-09-30 20:51:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:17,791 INFO L225 Difference]: With dead ends: 357 [2018-09-30 20:51:17,791 INFO L226 Difference]: Without dead ends: 355 [2018-09-30 20:51:17,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:51:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-09-30 20:51:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-09-30 20:51:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-09-30 20:51:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-09-30 20:51:17,794 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 350 [2018-09-30 20:51:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:17,794 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-09-30 20:51:17,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 20:51:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-09-30 20:51:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-30 20:51:17,795 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:17,795 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:17,795 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:17,796 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:17,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744686, now seen corresponding path program 87 times [2018-09-30 20:51:17,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:17,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:17,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:17,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:17,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:18,398 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:18,398 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:18,405 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:51:18,544 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-09-30 20:51:18,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:18,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:19,146 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:19,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-30 20:51:19,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 20:51:19,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 20:51:19,148 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:19,148 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 90 states. [2018-09-30 20:51:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:19,821 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-09-30 20:51:19,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-30 20:51:19,822 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-09-30 20:51:19,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:19,824 INFO L225 Difference]: With dead ends: 361 [2018-09-30 20:51:19,824 INFO L226 Difference]: Without dead ends: 359 [2018-09-30 20:51:19,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:51:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-09-30 20:51:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-09-30 20:51:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-09-30 20:51:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-09-30 20:51:19,828 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 354 [2018-09-30 20:51:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:19,828 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-09-30 20:51:19,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 20:51:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-09-30 20:51:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-30 20:51:19,830 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:19,830 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:19,830 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:19,830 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:19,830 INFO L82 PathProgramCache]: Analyzing trace with hash 180711164, now seen corresponding path program 88 times [2018-09-30 20:51:19,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:19,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:19,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:19,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:19,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:20,411 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:20,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:20,418 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:51:20,499 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:51:20,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:20,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:21,279 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:21,280 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-30 20:51:21,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-30 20:51:21,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-30 20:51:21,281 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:21,281 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 91 states. [2018-09-30 20:51:21,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:21,971 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-09-30 20:51:21,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 20:51:21,972 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-09-30 20:51:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:21,974 INFO L225 Difference]: With dead ends: 365 [2018-09-30 20:51:21,974 INFO L226 Difference]: Without dead ends: 363 [2018-09-30 20:51:21,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:51:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-09-30 20:51:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-09-30 20:51:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-09-30 20:51:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-09-30 20:51:21,978 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 358 [2018-09-30 20:51:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:21,978 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-09-30 20:51:21,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-30 20:51:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-09-30 20:51:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-30 20:51:21,979 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:21,979 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:21,979 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:21,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:21,980 INFO L82 PathProgramCache]: Analyzing trace with hash 512679590, now seen corresponding path program 89 times [2018-09-30 20:51:21,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:21,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:21,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:21,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:21,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:22,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:22,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:22,552 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:51:22,710 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-09-30 20:51:22,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:22,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:23,367 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:23,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-30 20:51:23,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 20:51:23,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 20:51:23,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:23,369 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 92 states. [2018-09-30 20:51:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:24,334 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-09-30 20:51:24,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-30 20:51:24,335 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-09-30 20:51:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:24,337 INFO L225 Difference]: With dead ends: 369 [2018-09-30 20:51:24,337 INFO L226 Difference]: Without dead ends: 367 [2018-09-30 20:51:24,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:51:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-09-30 20:51:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-09-30 20:51:24,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-09-30 20:51:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-09-30 20:51:24,341 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 362 [2018-09-30 20:51:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:24,341 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-09-30 20:51:24,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 20:51:24,341 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-09-30 20:51:24,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-09-30 20:51:24,342 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:24,342 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:24,343 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:24,343 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:24,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1264871760, now seen corresponding path program 90 times [2018-09-30 20:51:24,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:24,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:24,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:24,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:24,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:24,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:24,930 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 [2018-09-30 20:51:24,938 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:51:25,121 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-09-30 20:51:25,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:25,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:25,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:25,980 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-30 20:51:25,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-30 20:51:25,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-30 20:51:25,981 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:25,981 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 93 states. [2018-09-30 20:51:26,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:26,593 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-09-30 20:51:26,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 20:51:26,593 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-09-30 20:51:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:26,595 INFO L225 Difference]: With dead ends: 373 [2018-09-30 20:51:26,595 INFO L226 Difference]: Without dead ends: 371 [2018-09-30 20:51:26,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:51:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-09-30 20:51:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-09-30 20:51:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-09-30 20:51:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-09-30 20:51:26,599 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 366 [2018-09-30 20:51:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:26,599 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-09-30 20:51:26,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-30 20:51:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-09-30 20:51:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-30 20:51:26,601 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:26,601 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:26,601 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:26,601 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:26,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1480552710, now seen corresponding path program 91 times [2018-09-30 20:51:26,602 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:26,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:26,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:26,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:26,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:27,264 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:27,264 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:27,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:51:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:27,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:27,998 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:27,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-30 20:51:27,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 20:51:28,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 20:51:28,000 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:28,000 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 94 states. [2018-09-30 20:51:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:28,924 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-09-30 20:51:28,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-30 20:51:28,925 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-09-30 20:51:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:28,927 INFO L225 Difference]: With dead ends: 377 [2018-09-30 20:51:28,927 INFO L226 Difference]: Without dead ends: 375 [2018-09-30 20:51:28,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:51:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-09-30 20:51:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-09-30 20:51:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-09-30 20:51:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-09-30 20:51:28,930 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 370 [2018-09-30 20:51:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:28,931 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-09-30 20:51:28,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 20:51:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-09-30 20:51:28,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-09-30 20:51:28,932 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:28,932 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:28,932 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:28,933 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:28,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1998729308, now seen corresponding path program 92 times [2018-09-30 20:51:28,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:28,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:28,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:28,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:51:28,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:29,630 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:29,630 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:29,638 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:51:29,709 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:51:29,709 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:29,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:30,379 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:30,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-30 20:51:30,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-30 20:51:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-30 20:51:30,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:30,381 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 95 states. [2018-09-30 20:51:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:31,372 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-09-30 20:51:31,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 20:51:31,373 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-09-30 20:51:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:31,375 INFO L225 Difference]: With dead ends: 381 [2018-09-30 20:51:31,375 INFO L226 Difference]: Without dead ends: 379 [2018-09-30 20:51:31,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:51:31,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-09-30 20:51:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-09-30 20:51:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-09-30 20:51:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-09-30 20:51:31,379 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 374 [2018-09-30 20:51:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:31,379 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-09-30 20:51:31,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-30 20:51:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-09-30 20:51:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-30 20:51:31,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:31,381 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:31,381 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:31,381 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:31,381 INFO L82 PathProgramCache]: Analyzing trace with hash 582396750, now seen corresponding path program 93 times [2018-09-30 20:51:31,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:31,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:31,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:31,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:31,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:32,022 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:32,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:32,030 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:51:32,194 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-09-30 20:51:32,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:32,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:32,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:32,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-30 20:51:32,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 20:51:32,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 20:51:32,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:32,891 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 96 states. [2018-09-30 20:51:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:33,944 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-09-30 20:51:33,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 20:51:33,945 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-09-30 20:51:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:33,947 INFO L225 Difference]: With dead ends: 385 [2018-09-30 20:51:33,947 INFO L226 Difference]: Without dead ends: 383 [2018-09-30 20:51:33,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:51:33,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-09-30 20:51:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-09-30 20:51:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-09-30 20:51:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-09-30 20:51:33,950 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 378 [2018-09-30 20:51:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:33,950 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-09-30 20:51:33,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 20:51:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-09-30 20:51:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-09-30 20:51:33,951 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:33,952 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:33,952 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:33,952 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:33,952 INFO L82 PathProgramCache]: Analyzing trace with hash 671457784, now seen corresponding path program 94 times [2018-09-30 20:51:33,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:33,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:33,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:33,953 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:33,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:34,690 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:34,690 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:34,698 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:51:34,770 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:51:34,770 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:34,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:35,563 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:35,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-30 20:51:35,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 20:51:35,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 20:51:35,565 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:35,565 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 97 states. [2018-09-30 20:51:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:36,320 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-09-30 20:51:36,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 20:51:36,321 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-09-30 20:51:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:36,322 INFO L225 Difference]: With dead ends: 389 [2018-09-30 20:51:36,322 INFO L226 Difference]: Without dead ends: 387 [2018-09-30 20:51:36,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:51:36,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-09-30 20:51:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-09-30 20:51:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-09-30 20:51:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-09-30 20:51:36,325 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 382 [2018-09-30 20:51:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:36,326 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-09-30 20:51:36,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 20:51:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-09-30 20:51:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-09-30 20:51:36,327 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:36,328 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:36,328 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:36,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:36,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1782920098, now seen corresponding path program 95 times [2018-09-30 20:51:36,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:36,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:36,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:36,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:36,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:37,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:37,001 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 [2018-09-30 20:51:37,010 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:51:37,180 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-09-30 20:51:37,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:37,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:37,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:37,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-30 20:51:37,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 20:51:37,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 20:51:37,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:37,871 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 98 states. [2018-09-30 20:51:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:38,792 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-09-30 20:51:38,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-30 20:51:38,793 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-09-30 20:51:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:38,794 INFO L225 Difference]: With dead ends: 393 [2018-09-30 20:51:38,794 INFO L226 Difference]: Without dead ends: 391 [2018-09-30 20:51:38,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:51:38,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-09-30 20:51:38,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-09-30 20:51:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-09-30 20:51:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-09-30 20:51:38,798 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 386 [2018-09-30 20:51:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:38,798 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-09-30 20:51:38,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 20:51:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-09-30 20:51:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-30 20:51:38,800 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:38,800 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:38,800 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:38,800 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2041569356, now seen corresponding path program 96 times [2018-09-30 20:51:38,801 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:38,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:38,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:38,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:38,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:39,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:39,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:39,550 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:51:39,714 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-09-30 20:51:39,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:39,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:40,448 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:40,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-30 20:51:40,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-30 20:51:40,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-30 20:51:40,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:40,449 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 99 states. [2018-09-30 20:51:41,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:41,343 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-09-30 20:51:41,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 20:51:41,344 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-09-30 20:51:41,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:41,345 INFO L225 Difference]: With dead ends: 397 [2018-09-30 20:51:41,345 INFO L226 Difference]: Without dead ends: 395 [2018-09-30 20:51:41,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:51:41,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-09-30 20:51:41,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-09-30 20:51:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-09-30 20:51:41,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-09-30 20:51:41,348 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 390 [2018-09-30 20:51:41,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:41,349 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-09-30 20:51:41,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-30 20:51:41,349 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-09-30 20:51:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-09-30 20:51:41,350 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:41,350 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:41,351 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:41,351 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:41,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1161832438, now seen corresponding path program 97 times [2018-09-30 20:51:41,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:41,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:41,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:41,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:41,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:42,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:42,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:42,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:51:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:42,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:42,863 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:42,863 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-30 20:51:42,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 20:51:42,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 20:51:42,865 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:42,865 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 100 states. [2018-09-30 20:51:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:43,833 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-09-30 20:51:43,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-30 20:51:43,834 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-09-30 20:51:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:43,836 INFO L225 Difference]: With dead ends: 401 [2018-09-30 20:51:43,836 INFO L226 Difference]: Without dead ends: 399 [2018-09-30 20:51:43,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:51:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-09-30 20:51:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-09-30 20:51:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-09-30 20:51:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-09-30 20:51:43,839 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 394 [2018-09-30 20:51:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:43,839 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-09-30 20:51:43,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 20:51:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-09-30 20:51:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-09-30 20:51:43,841 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:43,841 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:43,841 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:43,842 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:43,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1162835296, now seen corresponding path program 98 times [2018-09-30 20:51:43,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:43,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:43,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:43,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:51:43,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:44,539 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:44,540 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:44,548 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:51:44,626 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:51:44,626 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:44,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:45,369 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:45,370 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-30 20:51:45,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 20:51:45,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 20:51:45,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:45,371 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 101 states. [2018-09-30 20:51:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:46,367 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-09-30 20:51:46,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 20:51:46,367 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-09-30 20:51:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:46,369 INFO L225 Difference]: With dead ends: 405 [2018-09-30 20:51:46,369 INFO L226 Difference]: Without dead ends: 403 [2018-09-30 20:51:46,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:51:46,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-09-30 20:51:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-09-30 20:51:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-09-30 20:51:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-09-30 20:51:46,372 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 398 [2018-09-30 20:51:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:46,373 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-09-30 20:51:46,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 20:51:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-09-30 20:51:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-09-30 20:51:46,375 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:46,375 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:46,375 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:46,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1719371850, now seen corresponding path program 99 times [2018-09-30 20:51:46,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:46,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:46,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:46,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:46,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:47,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:47,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:47,151 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:51:47,335 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-09-30 20:51:47,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:47,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:48,056 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:48,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-30 20:51:48,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 20:51:48,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 20:51:48,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:48,058 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 102 states. [2018-09-30 20:51:48,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:48,969 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-09-30 20:51:48,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-30 20:51:48,970 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-09-30 20:51:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:48,971 INFO L225 Difference]: With dead ends: 409 [2018-09-30 20:51:48,971 INFO L226 Difference]: Without dead ends: 407 [2018-09-30 20:51:48,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:51:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-09-30 20:51:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-09-30 20:51:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-09-30 20:51:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-09-30 20:51:48,976 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 402 [2018-09-30 20:51:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:48,977 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-09-30 20:51:48,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 20:51:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-09-30 20:51:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-30 20:51:48,979 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:48,979 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:48,979 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:48,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:48,980 INFO L82 PathProgramCache]: Analyzing trace with hash 333160692, now seen corresponding path program 100 times [2018-09-30 20:51:48,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:48,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:48,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:48,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:48,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:49,809 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:49,809 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 [2018-09-30 20:51:49,816 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:51:49,899 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:51:49,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:49,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:50,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:50,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-30 20:51:50,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 20:51:50,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 20:51:50,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:50,642 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 103 states. [2018-09-30 20:51:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:51,623 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-09-30 20:51:51,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 20:51:51,623 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-09-30 20:51:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:51,625 INFO L225 Difference]: With dead ends: 413 [2018-09-30 20:51:51,625 INFO L226 Difference]: Without dead ends: 411 [2018-09-30 20:51:51,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:51:51,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-09-30 20:51:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-09-30 20:51:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-09-30 20:51:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-09-30 20:51:51,630 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 406 [2018-09-30 20:51:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:51,631 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-09-30 20:51:51,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 20:51:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-09-30 20:51:51,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-09-30 20:51:51,632 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:51,633 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:51,633 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:51,633 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:51,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1825264798, now seen corresponding path program 101 times [2018-09-30 20:51:51,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:51,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:51,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:51,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:51,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:52,388 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:52,388 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:52,395 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:51:52,575 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-09-30 20:51:52,575 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:52,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:53,440 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:53,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-30 20:51:53,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 20:51:53,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 20:51:53,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:53,442 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 104 states. [2018-09-30 20:51:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:54,608 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-09-30 20:51:54,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-30 20:51:54,608 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-09-30 20:51:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:54,610 INFO L225 Difference]: With dead ends: 417 [2018-09-30 20:51:54,610 INFO L226 Difference]: Without dead ends: 415 [2018-09-30 20:51:54,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:51:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-09-30 20:51:54,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-09-30 20:51:54,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-09-30 20:51:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-09-30 20:51:54,614 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 410 [2018-09-30 20:51:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:54,615 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-09-30 20:51:54,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 20:51:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-09-30 20:51:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-30 20:51:54,617 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:54,617 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:54,617 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:54,617 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:54,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1710939320, now seen corresponding path program 102 times [2018-09-30 20:51:54,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:54,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:54,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:54,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:54,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:55,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:55,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:55,388 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:51:55,560 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-09-30 20:51:55,560 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:51:55,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:56,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:56,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-30 20:51:56,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-30 20:51:56,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-30 20:51:56,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:56,300 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 105 states. [2018-09-30 20:51:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:51:57,483 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-09-30 20:51:57,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 20:51:57,483 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-09-30 20:51:57,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:51:57,484 INFO L225 Difference]: With dead ends: 421 [2018-09-30 20:51:57,484 INFO L226 Difference]: Without dead ends: 419 [2018-09-30 20:51:57,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:51:57,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-09-30 20:51:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-09-30 20:51:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-09-30 20:51:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-09-30 20:51:57,487 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 414 [2018-09-30 20:51:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:51:57,488 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-09-30 20:51:57,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-30 20:51:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-09-30 20:51:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-09-30 20:51:57,489 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:51:57,489 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1] [2018-09-30 20:51:57,490 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:51:57,490 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:51:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash -486306574, now seen corresponding path program 103 times [2018-09-30 20:51:57,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:51:57,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:51:57,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:57,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:51:57,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:51:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:58,327 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:51:58,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:51:58,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:51:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:51:58,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:51:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:51:59,223 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:51:59,224 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-30 20:51:59,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 20:51:59,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 20:51:59,225 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:51:59,225 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 106 states. [2018-09-30 20:52:00,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:00,422 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-09-30 20:52:00,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-30 20:52:00,422 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-09-30 20:52:00,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:00,423 INFO L225 Difference]: With dead ends: 425 [2018-09-30 20:52:00,423 INFO L226 Difference]: Without dead ends: 423 [2018-09-30 20:52:00,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:52:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-09-30 20:52:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-09-30 20:52:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-09-30 20:52:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-09-30 20:52:00,427 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 418 [2018-09-30 20:52:00,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:00,427 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-09-30 20:52:00,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 20:52:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-09-30 20:52:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-09-30 20:52:00,429 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:00,429 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:00,429 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:00,429 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:00,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1308692892, now seen corresponding path program 104 times [2018-09-30 20:52:00,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:00,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:00,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:00,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:52:00,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:01,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:01,190 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 [2018-09-30 20:52:01,197 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:52:01,275 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:52:01,275 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:01,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:02,239 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:02,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-30 20:52:02,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 20:52:02,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 20:52:02,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:02,241 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 107 states. [2018-09-30 20:52:03,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:03,324 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-09-30 20:52:03,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 20:52:03,325 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-09-30 20:52:03,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:03,326 INFO L225 Difference]: With dead ends: 429 [2018-09-30 20:52:03,326 INFO L226 Difference]: Without dead ends: 427 [2018-09-30 20:52:03,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:52:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-09-30 20:52:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-09-30 20:52:03,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-09-30 20:52:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-09-30 20:52:03,329 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 422 [2018-09-30 20:52:03,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:03,329 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-09-30 20:52:03,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 20:52:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-09-30 20:52:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-30 20:52:03,330 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:03,331 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:03,331 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:03,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1073230150, now seen corresponding path program 105 times [2018-09-30 20:52:03,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:03,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:03,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:03,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:03,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:04,069 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:04,069 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 [2018-09-30 20:52:04,081 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:52:04,280 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-09-30 20:52:04,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:04,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:05,049 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:05,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-30 20:52:05,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 20:52:05,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 20:52:05,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:05,051 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 108 states. [2018-09-30 20:52:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:06,079 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-09-30 20:52:06,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-30 20:52:06,079 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-09-30 20:52:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:06,080 INFO L225 Difference]: With dead ends: 433 [2018-09-30 20:52:06,080 INFO L226 Difference]: Without dead ends: 431 [2018-09-30 20:52:06,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:52:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-09-30 20:52:06,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-09-30 20:52:06,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-09-30 20:52:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-09-30 20:52:06,083 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 426 [2018-09-30 20:52:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:06,084 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-09-30 20:52:06,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 20:52:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-09-30 20:52:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-09-30 20:52:06,085 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:06,085 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:06,085 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:06,085 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash 480472048, now seen corresponding path program 106 times [2018-09-30 20:52:06,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:06,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:06,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:06,086 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:06,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:07,061 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:07,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:52:07,068 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:52:07,158 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:52:07,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:07,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:07,916 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:07,916 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-30 20:52:07,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-30 20:52:07,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-30 20:52:07,917 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:07,918 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 109 states. [2018-09-30 20:52:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:09,067 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-09-30 20:52:09,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 20:52:09,068 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-09-30 20:52:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:09,069 INFO L225 Difference]: With dead ends: 437 [2018-09-30 20:52:09,069 INFO L226 Difference]: Without dead ends: 435 [2018-09-30 20:52:09,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:52:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-09-30 20:52:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-09-30 20:52:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-09-30 20:52:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-09-30 20:52:09,072 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 430 [2018-09-30 20:52:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:09,072 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-09-30 20:52:09,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-30 20:52:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-09-30 20:52:09,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-09-30 20:52:09,074 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:09,074 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:09,074 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:09,074 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash -427998822, now seen corresponding path program 107 times [2018-09-30 20:52:09,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:09,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:09,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:09,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:09,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:09,830 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:09,830 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:52:09,838 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:52:10,037 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-09-30 20:52:10,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:10,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:10,828 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:10,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-30 20:52:10,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-30 20:52:10,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-30 20:52:10,830 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:10,830 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 110 states. [2018-09-30 20:52:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:12,107 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-09-30 20:52:12,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-30 20:52:12,108 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-09-30 20:52:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:12,109 INFO L225 Difference]: With dead ends: 441 [2018-09-30 20:52:12,109 INFO L226 Difference]: Without dead ends: 439 [2018-09-30 20:52:12,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:52:12,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-09-30 20:52:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-09-30 20:52:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-09-30 20:52:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-09-30 20:52:12,112 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 434 [2018-09-30 20:52:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:12,112 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-09-30 20:52:12,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-30 20:52:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-09-30 20:52:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-09-30 20:52:12,114 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:12,114 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:12,114 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:12,114 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:12,114 INFO L82 PathProgramCache]: Analyzing trace with hash -557829564, now seen corresponding path program 108 times [2018-09-30 20:52:12,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:12,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:12,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:12,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:12,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:12,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:12,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:12,892 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:52:13,079 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-09-30 20:52:13,079 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:13,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:13,852 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:13,852 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-30 20:52:13,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-30 20:52:13,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-30 20:52:13,854 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:13,854 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 111 states. [2018-09-30 20:52:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:15,000 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-09-30 20:52:15,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-30 20:52:15,001 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 438 [2018-09-30 20:52:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:15,002 INFO L225 Difference]: With dead ends: 445 [2018-09-30 20:52:15,002 INFO L226 Difference]: Without dead ends: 443 [2018-09-30 20:52:15,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:52:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-09-30 20:52:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-09-30 20:52:15,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-09-30 20:52:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-09-30 20:52:15,004 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 438 [2018-09-30 20:52:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:15,005 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-09-30 20:52:15,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-30 20:52:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-09-30 20:52:15,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-09-30 20:52:15,006 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:15,006 INFO L375 BasicCegarLoop]: trace histogram [109, 109, 109, 109, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:15,007 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:15,007 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:15,007 INFO L82 PathProgramCache]: Analyzing trace with hash 627490286, now seen corresponding path program 109 times [2018-09-30 20:52:15,007 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:15,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:15,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:15,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:15,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:15,769 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:15,770 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:15,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:52:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:15,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:16,667 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:16,667 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-30 20:52:16,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 20:52:16,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 20:52:16,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:16,669 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 112 states. [2018-09-30 20:52:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:17,988 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-09-30 20:52:17,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-30 20:52:17,988 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 442 [2018-09-30 20:52:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:17,990 INFO L225 Difference]: With dead ends: 449 [2018-09-30 20:52:17,990 INFO L226 Difference]: Without dead ends: 447 [2018-09-30 20:52:17,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:52:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-09-30 20:52:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-09-30 20:52:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-09-30 20:52:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-09-30 20:52:17,993 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 442 [2018-09-30 20:52:17,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:17,994 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-09-30 20:52:17,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 20:52:17,994 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-09-30 20:52:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-09-30 20:52:17,995 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:17,995 INFO L375 BasicCegarLoop]: trace histogram [110, 110, 110, 110, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:17,995 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:17,996 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:17,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1496016024, now seen corresponding path program 110 times [2018-09-30 20:52:17,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:17,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:17,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:17,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:52:17,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:18,785 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:18,785 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:18,792 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:52:18,874 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:52:18,874 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:18,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:19,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:19,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-30 20:52:19,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-30 20:52:19,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-30 20:52:19,718 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:19,718 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 113 states. [2018-09-30 20:52:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:20,877 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-09-30 20:52:20,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-30 20:52:20,878 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 446 [2018-09-30 20:52:20,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:20,879 INFO L225 Difference]: With dead ends: 453 [2018-09-30 20:52:20,879 INFO L226 Difference]: Without dead ends: 451 [2018-09-30 20:52:20,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:52:20,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-09-30 20:52:20,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-09-30 20:52:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-09-30 20:52:20,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-09-30 20:52:20,882 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 446 [2018-09-30 20:52:20,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:20,883 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-09-30 20:52:20,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-30 20:52:20,883 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-09-30 20:52:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-09-30 20:52:20,884 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:20,884 INFO L375 BasicCegarLoop]: trace histogram [111, 111, 111, 111, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:20,885 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:20,885 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:20,885 INFO L82 PathProgramCache]: Analyzing trace with hash 931702338, now seen corresponding path program 111 times [2018-09-30 20:52:20,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:20,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:20,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:20,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:20,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:21,738 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:21,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:21,744 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:52:21,959 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-09-30 20:52:21,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:21,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:22,951 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:22,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-30 20:52:22,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-30 20:52:22,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-30 20:52:22,954 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:22,954 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 114 states. [2018-09-30 20:52:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:24,451 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-09-30 20:52:24,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-30 20:52:24,452 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 450 [2018-09-30 20:52:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:24,453 INFO L225 Difference]: With dead ends: 457 [2018-09-30 20:52:24,453 INFO L226 Difference]: Without dead ends: 455 [2018-09-30 20:52:24,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:52:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-09-30 20:52:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-09-30 20:52:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-09-30 20:52:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-09-30 20:52:24,456 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 450 [2018-09-30 20:52:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:24,456 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-09-30 20:52:24,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-30 20:52:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-09-30 20:52:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-09-30 20:52:24,457 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:24,457 INFO L375 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:24,458 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:24,458 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:24,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1018757868, now seen corresponding path program 112 times [2018-09-30 20:52:24,458 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:24,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:24,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:24,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:24,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:25,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:25,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:25,277 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:52:25,367 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:52:25,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:25,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:26,179 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:26,180 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-30 20:52:26,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-30 20:52:26,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-30 20:52:26,181 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:26,181 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 115 states. [2018-09-30 20:52:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:27,573 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2018-09-30 20:52:27,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-30 20:52:27,573 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 454 [2018-09-30 20:52:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:27,574 INFO L225 Difference]: With dead ends: 461 [2018-09-30 20:52:27,574 INFO L226 Difference]: Without dead ends: 459 [2018-09-30 20:52:27,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:52:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-09-30 20:52:27,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-09-30 20:52:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-09-30 20:52:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 459 transitions. [2018-09-30 20:52:27,577 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 459 transitions. Word has length 454 [2018-09-30 20:52:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:27,578 INFO L480 AbstractCegarLoop]: Abstraction has 459 states and 459 transitions. [2018-09-30 20:52:27,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-30 20:52:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 459 transitions. [2018-09-30 20:52:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-09-30 20:52:27,579 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:27,580 INFO L375 BasicCegarLoop]: trace histogram [113, 113, 113, 113, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:27,580 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:27,580 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:27,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1136065174, now seen corresponding path program 113 times [2018-09-30 20:52:27,580 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:27,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:27,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:27,581 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:27,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:28,534 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:28,534 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:28,541 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:52:28,762 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-09-30 20:52:28,763 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:28,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:29,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:29,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-30 20:52:29,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 20:52:29,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 20:52:29,762 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:29,762 INFO L87 Difference]: Start difference. First operand 459 states and 459 transitions. Second operand 116 states. [2018-09-30 20:52:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:31,342 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2018-09-30 20:52:31,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-30 20:52:31,343 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 458 [2018-09-30 20:52:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:31,344 INFO L225 Difference]: With dead ends: 465 [2018-09-30 20:52:31,344 INFO L226 Difference]: Without dead ends: 463 [2018-09-30 20:52:31,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:52:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-09-30 20:52:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2018-09-30 20:52:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-09-30 20:52:31,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2018-09-30 20:52:31,347 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 458 [2018-09-30 20:52:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:31,348 INFO L480 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2018-09-30 20:52:31,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 20:52:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2018-09-30 20:52:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-09-30 20:52:31,350 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:31,351 INFO L375 BasicCegarLoop]: trace histogram [114, 114, 114, 114, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:31,351 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:31,351 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:31,351 INFO L82 PathProgramCache]: Analyzing trace with hash 641535296, now seen corresponding path program 114 times [2018-09-30 20:52:31,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:31,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:31,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:31,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:31,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:32,209 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:32,209 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:32,216 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:52:32,476 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-09-30 20:52:32,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:32,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:33,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:33,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-30 20:52:33,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-30 20:52:33,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-30 20:52:33,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:33,334 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand 117 states. [2018-09-30 20:52:34,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:34,375 INFO L93 Difference]: Finished difference Result 469 states and 469 transitions. [2018-09-30 20:52:34,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-30 20:52:34,376 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 462 [2018-09-30 20:52:34,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:34,377 INFO L225 Difference]: With dead ends: 469 [2018-09-30 20:52:34,377 INFO L226 Difference]: Without dead ends: 467 [2018-09-30 20:52:34,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:52:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2018-09-30 20:52:34,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2018-09-30 20:52:34,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-09-30 20:52:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 467 transitions. [2018-09-30 20:52:34,381 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 467 transitions. Word has length 462 [2018-09-30 20:52:34,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:34,381 INFO L480 AbstractCegarLoop]: Abstraction has 467 states and 467 transitions. [2018-09-30 20:52:34,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-30 20:52:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 467 transitions. [2018-09-30 20:52:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-09-30 20:52:34,383 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:34,383 INFO L375 BasicCegarLoop]: trace histogram [115, 115, 115, 115, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:34,383 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:34,383 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:34,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1556462314, now seen corresponding path program 115 times [2018-09-30 20:52:34,384 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:34,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:34,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:34,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:34,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:35,229 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:35,229 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:35,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:52:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:35,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:36,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:36,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-30 20:52:36,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-30 20:52:36,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-30 20:52:36,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:36,196 INFO L87 Difference]: Start difference. First operand 467 states and 467 transitions. Second operand 118 states. [2018-09-30 20:52:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:37,754 INFO L93 Difference]: Finished difference Result 473 states and 473 transitions. [2018-09-30 20:52:37,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-30 20:52:37,755 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 466 [2018-09-30 20:52:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:37,756 INFO L225 Difference]: With dead ends: 473 [2018-09-30 20:52:37,756 INFO L226 Difference]: Without dead ends: 471 [2018-09-30 20:52:37,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:52:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-09-30 20:52:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2018-09-30 20:52:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-09-30 20:52:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 471 transitions. [2018-09-30 20:52:37,759 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 471 transitions. Word has length 466 [2018-09-30 20:52:37,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:37,759 INFO L480 AbstractCegarLoop]: Abstraction has 471 states and 471 transitions. [2018-09-30 20:52:37,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-30 20:52:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 471 transitions. [2018-09-30 20:52:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-09-30 20:52:37,761 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:37,761 INFO L375 BasicCegarLoop]: trace histogram [116, 116, 116, 116, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:37,761 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:37,761 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:37,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1635023980, now seen corresponding path program 116 times [2018-09-30 20:52:37,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:37,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:37,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:37,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:52:37,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:38,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:38,654 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:38,673 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:52:38,761 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:52:38,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:38,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:39,627 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:39,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-30 20:52:39,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-30 20:52:39,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-30 20:52:39,629 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:39,629 INFO L87 Difference]: Start difference. First operand 471 states and 471 transitions. Second operand 119 states. [2018-09-30 20:52:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:40,995 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2018-09-30 20:52:40,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-30 20:52:40,996 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 470 [2018-09-30 20:52:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:40,997 INFO L225 Difference]: With dead ends: 477 [2018-09-30 20:52:40,997 INFO L226 Difference]: Without dead ends: 475 [2018-09-30 20:52:40,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:52:40,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-09-30 20:52:41,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2018-09-30 20:52:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-09-30 20:52:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 475 transitions. [2018-09-30 20:52:41,001 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 475 transitions. Word has length 470 [2018-09-30 20:52:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:41,001 INFO L480 AbstractCegarLoop]: Abstraction has 475 states and 475 transitions. [2018-09-30 20:52:41,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-30 20:52:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 475 transitions. [2018-09-30 20:52:41,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-09-30 20:52:41,004 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:41,004 INFO L375 BasicCegarLoop]: trace histogram [117, 117, 117, 117, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:41,004 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:41,004 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:41,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2121734338, now seen corresponding path program 117 times [2018-09-30 20:52:41,005 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:41,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:41,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:41,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:41,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:41,862 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:41,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:41,870 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:52:42,098 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-09-30 20:52:42,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:42,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:43,230 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:43,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-30 20:52:43,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 20:52:43,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 20:52:43,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:43,232 INFO L87 Difference]: Start difference. First operand 475 states and 475 transitions. Second operand 120 states. [2018-09-30 20:52:44,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:44,628 INFO L93 Difference]: Finished difference Result 481 states and 481 transitions. [2018-09-30 20:52:44,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-30 20:52:44,628 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 474 [2018-09-30 20:52:44,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:44,629 INFO L225 Difference]: With dead ends: 481 [2018-09-30 20:52:44,629 INFO L226 Difference]: Without dead ends: 479 [2018-09-30 20:52:44,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:52:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-09-30 20:52:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-09-30 20:52:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-30 20:52:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2018-09-30 20:52:44,632 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 474 [2018-09-30 20:52:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:44,632 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2018-09-30 20:52:44,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 20:52:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2018-09-30 20:52:44,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-09-30 20:52:44,634 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:44,634 INFO L375 BasicCegarLoop]: trace histogram [118, 118, 118, 118, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:44,634 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:44,634 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:44,635 INFO L82 PathProgramCache]: Analyzing trace with hash 444098024, now seen corresponding path program 118 times [2018-09-30 20:52:44,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:44,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:44,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:44,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:44,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:45,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:45,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:45,536 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:52:45,632 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:52:45,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:45,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:46,492 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:46,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-30 20:52:46,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-30 20:52:46,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-30 20:52:46,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:46,494 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand 121 states. [2018-09-30 20:52:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:48,020 INFO L93 Difference]: Finished difference Result 485 states and 485 transitions. [2018-09-30 20:52:48,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-30 20:52:48,020 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 478 [2018-09-30 20:52:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:48,021 INFO L225 Difference]: With dead ends: 485 [2018-09-30 20:52:48,022 INFO L226 Difference]: Without dead ends: 483 [2018-09-30 20:52:48,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:52:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-09-30 20:52:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2018-09-30 20:52:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2018-09-30 20:52:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 483 transitions. [2018-09-30 20:52:48,025 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 483 transitions. Word has length 478 [2018-09-30 20:52:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:48,026 INFO L480 AbstractCegarLoop]: Abstraction has 483 states and 483 transitions. [2018-09-30 20:52:48,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-30 20:52:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 483 transitions. [2018-09-30 20:52:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-09-30 20:52:48,028 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:48,028 INFO L375 BasicCegarLoop]: trace histogram [119, 119, 119, 119, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:48,029 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:48,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:48,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1663795310, now seen corresponding path program 119 times [2018-09-30 20:52:48,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:48,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:48,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:48,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:48,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:48,990 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:48,990 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:48,997 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:52:49,227 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2018-09-30 20:52:49,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:49,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:50,077 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:50,077 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-30 20:52:50,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-30 20:52:50,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-30 20:52:50,078 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:50,078 INFO L87 Difference]: Start difference. First operand 483 states and 483 transitions. Second operand 122 states. [2018-09-30 20:52:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:51,725 INFO L93 Difference]: Finished difference Result 489 states and 489 transitions. [2018-09-30 20:52:51,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-30 20:52:51,725 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 482 [2018-09-30 20:52:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:51,726 INFO L225 Difference]: With dead ends: 489 [2018-09-30 20:52:51,726 INFO L226 Difference]: Without dead ends: 487 [2018-09-30 20:52:51,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:52:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-09-30 20:52:51,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2018-09-30 20:52:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2018-09-30 20:52:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 487 transitions. [2018-09-30 20:52:51,729 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 487 transitions. Word has length 482 [2018-09-30 20:52:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:51,730 INFO L480 AbstractCegarLoop]: Abstraction has 487 states and 487 transitions. [2018-09-30 20:52:51,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-30 20:52:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 487 transitions. [2018-09-30 20:52:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-09-30 20:52:51,731 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:51,732 INFO L375 BasicCegarLoop]: trace histogram [120, 120, 120, 120, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:51,732 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:51,732 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:51,732 INFO L82 PathProgramCache]: Analyzing trace with hash -86526916, now seen corresponding path program 120 times [2018-09-30 20:52:51,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:51,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:51,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:51,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:51,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:52,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:52,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:52,702 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:52:52,935 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-09-30 20:52:52,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:52:52,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:53,857 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:53,857 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-09-30 20:52:53,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-30 20:52:53,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-30 20:52:53,859 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:53,859 INFO L87 Difference]: Start difference. First operand 487 states and 487 transitions. Second operand 123 states. [2018-09-30 20:52:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:54,947 INFO L93 Difference]: Finished difference Result 493 states and 493 transitions. [2018-09-30 20:52:54,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-30 20:52:54,947 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 486 [2018-09-30 20:52:54,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:54,948 INFO L225 Difference]: With dead ends: 493 [2018-09-30 20:52:54,948 INFO L226 Difference]: Without dead ends: 491 [2018-09-30 20:52:54,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:52:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-09-30 20:52:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2018-09-30 20:52:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-09-30 20:52:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2018-09-30 20:52:54,951 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 486 [2018-09-30 20:52:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:54,952 INFO L480 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2018-09-30 20:52:54,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-09-30 20:52:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2018-09-30 20:52:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-09-30 20:52:54,953 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:54,953 INFO L375 BasicCegarLoop]: trace histogram [121, 121, 121, 121, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:54,954 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:54,954 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:54,954 INFO L82 PathProgramCache]: Analyzing trace with hash -2055437338, now seen corresponding path program 121 times [2018-09-30 20:52:54,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:54,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:54,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:54,955 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:52:54,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:55,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:55,858 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:55,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:52:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:55,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:52:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:57,148 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:52:57,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-09-30 20:52:57,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 20:52:57,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 20:52:57,150 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:52:57,150 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 124 states. [2018-09-30 20:52:58,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:52:58,887 INFO L93 Difference]: Finished difference Result 497 states and 497 transitions. [2018-09-30 20:52:58,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-09-30 20:52:58,887 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 490 [2018-09-30 20:52:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:52:58,889 INFO L225 Difference]: With dead ends: 497 [2018-09-30 20:52:58,889 INFO L226 Difference]: Without dead ends: 495 [2018-09-30 20:52:58,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:52:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-09-30 20:52:58,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-09-30 20:52:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-09-30 20:52:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 495 transitions. [2018-09-30 20:52:58,893 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 495 transitions. Word has length 490 [2018-09-30 20:52:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:52:58,893 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 495 transitions. [2018-09-30 20:52:58,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 20:52:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 495 transitions. [2018-09-30 20:52:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-09-30 20:52:58,895 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:52:58,896 INFO L375 BasicCegarLoop]: trace histogram [122, 122, 122, 122, 1, 1, 1, 1, 1, 1] [2018-09-30 20:52:58,896 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:52:58,896 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:52:58,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1937936752, now seen corresponding path program 122 times [2018-09-30 20:52:58,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:52:58,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:52:58,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:58,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:52:58,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:52:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:52:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:52:59,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:52:59,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:52:59,914 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:53:00,008 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:53:00,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:53:00,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:53:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:00,895 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:53:00,895 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-09-30 20:53:00,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-09-30 20:53:00,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-09-30 20:53:00,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:53:00,897 INFO L87 Difference]: Start difference. First operand 495 states and 495 transitions. Second operand 125 states. [2018-09-30 20:53:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:53:02,171 INFO L93 Difference]: Finished difference Result 501 states and 501 transitions. [2018-09-30 20:53:02,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-30 20:53:02,172 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 494 [2018-09-30 20:53:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:53:02,173 INFO L225 Difference]: With dead ends: 501 [2018-09-30 20:53:02,173 INFO L226 Difference]: Without dead ends: 499 [2018-09-30 20:53:02,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:53:02,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-09-30 20:53:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2018-09-30 20:53:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2018-09-30 20:53:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 499 transitions. [2018-09-30 20:53:02,178 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 499 transitions. Word has length 494 [2018-09-30 20:53:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:53:02,178 INFO L480 AbstractCegarLoop]: Abstraction has 499 states and 499 transitions. [2018-09-30 20:53:02,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-09-30 20:53:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 499 transitions. [2018-09-30 20:53:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-09-30 20:53:02,181 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:53:02,181 INFO L375 BasicCegarLoop]: trace histogram [123, 123, 123, 123, 1, 1, 1, 1, 1, 1] [2018-09-30 20:53:02,181 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:53:02,181 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:53:02,181 INFO L82 PathProgramCache]: Analyzing trace with hash -27986886, now seen corresponding path program 123 times [2018-09-30 20:53:02,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:53:02,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:53:02,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:02,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:53:02,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:53:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:03,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:53:03,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:53:03,297 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:53:03,554 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 124 check-sat command(s) [2018-09-30 20:53:03,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:53:03,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:53:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:04,468 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:53:04,468 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-09-30 20:53:04,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-09-30 20:53:04,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-09-30 20:53:04,470 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:53:04,470 INFO L87 Difference]: Start difference. First operand 499 states and 499 transitions. Second operand 126 states. [2018-09-30 20:53:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:53:05,990 INFO L93 Difference]: Finished difference Result 505 states and 505 transitions. [2018-09-30 20:53:05,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-09-30 20:53:05,991 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 498 [2018-09-30 20:53:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:53:05,991 INFO L225 Difference]: With dead ends: 505 [2018-09-30 20:53:05,991 INFO L226 Difference]: Without dead ends: 503 [2018-09-30 20:53:05,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:53:05,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2018-09-30 20:53:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2018-09-30 20:53:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2018-09-30 20:53:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 503 transitions. [2018-09-30 20:53:05,994 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 503 transitions. Word has length 498 [2018-09-30 20:53:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:53:05,995 INFO L480 AbstractCegarLoop]: Abstraction has 503 states and 503 transitions. [2018-09-30 20:53:05,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-09-30 20:53:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 503 transitions. [2018-09-30 20:53:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-09-30 20:53:05,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:53:05,997 INFO L375 BasicCegarLoop]: trace histogram [124, 124, 124, 124, 1, 1, 1, 1, 1, 1] [2018-09-30 20:53:05,997 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:53:05,997 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:53:05,998 INFO L82 PathProgramCache]: Analyzing trace with hash 138253540, now seen corresponding path program 124 times [2018-09-30 20:53:05,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:53:05,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:53:05,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:05,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:53:05,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:53:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:06,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:53:06,905 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:53:06,912 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:53:07,010 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:53:07,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:53:07,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:53:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:07,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:53:07,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-09-30 20:53:07,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-09-30 20:53:07,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-09-30 20:53:07,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:53:07,938 INFO L87 Difference]: Start difference. First operand 503 states and 503 transitions. Second operand 127 states. [2018-09-30 20:53:09,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:53:09,653 INFO L93 Difference]: Finished difference Result 509 states and 509 transitions. [2018-09-30 20:53:09,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-09-30 20:53:09,654 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 502 [2018-09-30 20:53:09,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:53:09,654 INFO L225 Difference]: With dead ends: 509 [2018-09-30 20:53:09,654 INFO L226 Difference]: Without dead ends: 507 [2018-09-30 20:53:09,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:53:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-09-30 20:53:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2018-09-30 20:53:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2018-09-30 20:53:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 507 transitions. [2018-09-30 20:53:09,658 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 507 transitions. Word has length 502 [2018-09-30 20:53:09,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:53:09,659 INFO L480 AbstractCegarLoop]: Abstraction has 507 states and 507 transitions. [2018-09-30 20:53:09,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-09-30 20:53:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 507 transitions. [2018-09-30 20:53:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-09-30 20:53:09,661 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:53:09,661 INFO L375 BasicCegarLoop]: trace histogram [125, 125, 125, 125, 1, 1, 1, 1, 1, 1] [2018-09-30 20:53:09,662 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:53:09,662 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:53:09,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1238249330, now seen corresponding path program 125 times [2018-09-30 20:53:09,662 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:53:09,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:53:09,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:09,663 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:53:09,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:53:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:10,639 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:53:10,639 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:53:10,647 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:53:10,901 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2018-09-30 20:53:10,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:53:10,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:53:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:11,826 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:53:11,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-09-30 20:53:11,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 20:53:11,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 20:53:11,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:53:11,828 INFO L87 Difference]: Start difference. First operand 507 states and 507 transitions. Second operand 128 states. [2018-09-30 20:53:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:53:13,077 INFO L93 Difference]: Finished difference Result 513 states and 513 transitions. [2018-09-30 20:53:13,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-09-30 20:53:13,078 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 506 [2018-09-30 20:53:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:53:13,079 INFO L225 Difference]: With dead ends: 513 [2018-09-30 20:53:13,079 INFO L226 Difference]: Without dead ends: 511 [2018-09-30 20:53:13,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:53:13,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-09-30 20:53:13,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2018-09-30 20:53:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2018-09-30 20:53:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 511 transitions. [2018-09-30 20:53:13,084 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 511 transitions. Word has length 506 [2018-09-30 20:53:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:53:13,084 INFO L480 AbstractCegarLoop]: Abstraction has 511 states and 511 transitions. [2018-09-30 20:53:13,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 20:53:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 511 transitions. [2018-09-30 20:53:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-09-30 20:53:13,086 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:53:13,086 INFO L375 BasicCegarLoop]: trace histogram [126, 126, 126, 126, 1, 1, 1, 1, 1, 1] [2018-09-30 20:53:13,087 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:53:13,087 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:53:13,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1830017224, now seen corresponding path program 126 times [2018-09-30 20:53:13,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:53:13,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:53:13,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:13,088 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:53:13,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:53:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:14,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:53:14,178 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:53:14,186 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:53:14,427 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-09-30 20:53:14,428 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:53:14,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:53:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:15,363 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:53:15,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-09-30 20:53:15,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-09-30 20:53:15,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-09-30 20:53:15,365 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:53:15,366 INFO L87 Difference]: Start difference. First operand 511 states and 511 transitions. Second operand 129 states. [2018-09-30 20:53:16,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:53:16,901 INFO L93 Difference]: Finished difference Result 517 states and 517 transitions. [2018-09-30 20:53:16,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-30 20:53:16,901 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 510 [2018-09-30 20:53:16,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:53:16,902 INFO L225 Difference]: With dead ends: 517 [2018-09-30 20:53:16,902 INFO L226 Difference]: Without dead ends: 515 [2018-09-30 20:53:16,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:53:16,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-09-30 20:53:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-09-30 20:53:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-09-30 20:53:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 515 transitions. [2018-09-30 20:53:16,906 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 515 transitions. Word has length 510 [2018-09-30 20:53:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:53:16,907 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 515 transitions. [2018-09-30 20:53:16,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-09-30 20:53:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 515 transitions. [2018-09-30 20:53:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-09-30 20:53:16,909 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:53:16,909 INFO L375 BasicCegarLoop]: trace histogram [127, 127, 127, 127, 1, 1, 1, 1, 1, 1] [2018-09-30 20:53:16,909 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:53:16,909 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:53:16,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1206327522, now seen corresponding path program 127 times [2018-09-30 20:53:16,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:53:16,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:53:16,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:16,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:53:16,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:53:17,886 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:17,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:53:17,887 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:53:17,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:53:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:53:17,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:53:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:19,084 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:53:19,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-09-30 20:53:19,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-09-30 20:53:19,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-09-30 20:53:19,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:53:19,086 INFO L87 Difference]: Start difference. First operand 515 states and 515 transitions. Second operand 130 states. [2018-09-30 20:53:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:53:20,690 INFO L93 Difference]: Finished difference Result 521 states and 521 transitions. [2018-09-30 20:53:20,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-09-30 20:53:20,690 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 514 [2018-09-30 20:53:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:53:20,691 INFO L225 Difference]: With dead ends: 521 [2018-09-30 20:53:20,691 INFO L226 Difference]: Without dead ends: 519 [2018-09-30 20:53:20,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:53:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-09-30 20:53:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2018-09-30 20:53:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2018-09-30 20:53:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 519 transitions. [2018-09-30 20:53:20,695 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 519 transitions. Word has length 514 [2018-09-30 20:53:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:53:20,696 INFO L480 AbstractCegarLoop]: Abstraction has 519 states and 519 transitions. [2018-09-30 20:53:20,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-09-30 20:53:20,696 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 519 transitions. [2018-09-30 20:53:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-09-30 20:53:20,698 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:53:20,698 INFO L375 BasicCegarLoop]: trace histogram [128, 128, 128, 128, 1, 1, 1, 1, 1, 1] [2018-09-30 20:53:20,698 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:53:20,698 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:53:20,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1029514636, now seen corresponding path program 128 times [2018-09-30 20:53:20,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:53:20,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:53:20,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:20,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:53:20,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:53:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:21,678 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:53:21,678 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:53:21,686 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:53:21,789 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:53:21,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:53:21,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:53:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:22,737 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:53:22,738 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-09-30 20:53:22,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-09-30 20:53:22,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-09-30 20:53:22,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:53:22,740 INFO L87 Difference]: Start difference. First operand 519 states and 519 transitions. Second operand 131 states. [2018-09-30 20:53:23,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:53:23,956 INFO L93 Difference]: Finished difference Result 525 states and 525 transitions. [2018-09-30 20:53:23,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-09-30 20:53:23,957 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 518 [2018-09-30 20:53:23,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:53:23,958 INFO L225 Difference]: With dead ends: 525 [2018-09-30 20:53:23,958 INFO L226 Difference]: Without dead ends: 523 [2018-09-30 20:53:23,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:53:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2018-09-30 20:53:23,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2018-09-30 20:53:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2018-09-30 20:53:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 523 transitions. [2018-09-30 20:53:23,962 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 523 transitions. Word has length 518 [2018-09-30 20:53:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:53:23,962 INFO L480 AbstractCegarLoop]: Abstraction has 523 states and 523 transitions. [2018-09-30 20:53:23,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-09-30 20:53:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 523 transitions. [2018-09-30 20:53:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-09-30 20:53:23,965 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:53:23,965 INFO L375 BasicCegarLoop]: trace histogram [129, 129, 129, 129, 1, 1, 1, 1, 1, 1] [2018-09-30 20:53:23,966 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:53:23,966 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:53:23,966 INFO L82 PathProgramCache]: Analyzing trace with hash 977849654, now seen corresponding path program 129 times [2018-09-30 20:53:23,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:53:23,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:53:23,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:23,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:53:23,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:53:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 33153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:24,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:53:24,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:53:25,005 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:53:25,282 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 130 check-sat command(s) [2018-09-30 20:53:25,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:53:25,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:53:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 33153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:53:26,251 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:53:26,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-09-30 20:53:26,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-30 20:53:26,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-30 20:53:26,252 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:53:26,252 INFO L87 Difference]: Start difference. First operand 523 states and 523 transitions. Second operand 132 states. [2018-09-30 20:53:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:53:27,699 INFO L93 Difference]: Finished difference Result 529 states and 529 transitions. [2018-09-30 20:53:27,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-09-30 20:53:27,699 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 522 [2018-09-30 20:53:27,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:53:27,700 INFO L225 Difference]: With dead ends: 529 [2018-09-30 20:53:27,700 INFO L226 Difference]: Without dead ends: 527 [2018-09-30 20:53:27,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:53:27,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-09-30 20:53:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2018-09-30 20:53:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-09-30 20:53:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 527 transitions. [2018-09-30 20:53:27,703 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 527 transitions. Word has length 522 [2018-09-30 20:53:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:53:27,703 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 527 transitions. [2018-09-30 20:53:27,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-30 20:53:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 527 transitions. [2018-09-30 20:53:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-09-30 20:53:27,707 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:53:27,707 INFO L375 BasicCegarLoop]: trace histogram [130, 130, 130, 130, 1, 1, 1, 1, 1, 1] [2018-09-30 20:53:27,707 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:53:27,708 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:53:27,708 INFO L82 PathProgramCache]: Analyzing trace with hash 73699296, now seen corresponding path program 130 times [2018-09-30 20:53:27,708 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:53:27,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:53:27,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:27,709 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:53:27,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:53:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-30 20:53:28,275 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 20:53:28,279 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 20:53:28,286 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 08:53:28 BoogieIcfgContainer [2018-09-30 20:53:28,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 20:53:28,287 INFO L168 Benchmark]: Toolchain (without parser) took 241087.51 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 345.0 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -44.7 MB). Peak memory consumption was 300.3 MB. Max. memory is 7.1 GB. [2018-09-30 20:53:28,289 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:53:28,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:53:28,290 INFO L168 Benchmark]: Boogie Preprocessor took 26.93 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:53:28,290 INFO L168 Benchmark]: RCFGBuilder took 453.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 20:53:28,291 INFO L168 Benchmark]: TraceAbstraction took 240555.60 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 345.0 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -65.9 MB). Peak memory consumption was 279.1 MB. Max. memory is 7.1 GB. [2018-09-30 20:53:28,296 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 0.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.93 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 453.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240555.60 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 345.0 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -65.9 MB). Peak memory consumption was 279.1 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 527 with TraceHistMax 130, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 525 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 240.4s OverallTime, 132 OverallIterations, 130 TraceHistogramMax, 80.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1179 SDtfs, 924 SDslu, 29083 SDs, 0 SdLazy, 12187 SolverSat, 307 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42832 GetRequests, 34316 SyntacticMatches, 0 SemanticMatches, 8516 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=527occurred in iteration=131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 131 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 12.3s SatisfiabilityAnalysisTime, 133.0s InterpolantComputationTime, 68640 NumberOfCodeBlocks, 68640 NumberOfCodeBlocksAsserted, 4506 NumberOfCheckSat, 68380 ConstructedInterpolants, 0 QuantifiedInterpolants, 71390000 SizeOfPredicates, 129 NumberOfNonLiveVariables, 51858 ConjunctsInSsa, 8643 ConjunctsInUnsatCore, 260 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2878850 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_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_20-53-28-319.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_20-53-28-319.csv Completed graceful shutdown