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-d19836b [2018-09-26 21:56:00,105 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:56:00,109 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:56:00,128 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 21:56:00,128 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 21:56:00,130 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 21:56:00,131 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 21:56:00,133 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 21:56:00,136 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 21:56:00,137 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 21:56:00,144 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 21:56:00,174 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 [2018-09-26 21:56:00,202 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:56:00,204 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:56:00,204 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:56:00,205 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:56:00,205 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:56:00,206 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:56:00,206 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:56:00,207 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:56:00,207 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:56:00,207 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:56:00,207 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:56:00,207 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:56:00,208 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:56:00,208 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:56:00,208 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:56:00,208 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:56:00,209 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:56:00,209 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:56:00,209 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:56:00,210 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:56:00,210 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:56:00,210 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:56:00,210 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:56:00,211 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:56:00,211 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:56:00,211 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:56:00,211 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:56:00,211 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:56:00,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:56:00,212 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:56:00,212 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-26 21:56:00,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:56:00,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:56:00,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:56:00,279 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:56:00,279 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:56:00,280 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl [2018-09-26 21:56:00,280 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl' [2018-09-26 21:56:00,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:56:00,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:56:00,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:56:00,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:56:00,339 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:56:00,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/1) ... [2018-09-26 21:56:00,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/1) ... [2018-09-26 21:56:00,379 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 21:56:00,380 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 21:56:00,380 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 21:56:00,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:56:00,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:56:00,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:56:00,383 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:56:00,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/1) ... [2018-09-26 21:56:00,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/1) ... [2018-09-26 21:56:00,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/1) ... [2018-09-26 21:56:00,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/1) ... [2018-09-26 21:56:00,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/1) ... [2018-09-26 21:56:00,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/1) ... [2018-09-26 21:56:00,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/1) ... [2018-09-26 21:56:00,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:56:00,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:56:00,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:56:00,411 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:56:00,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (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 [2018-09-26 21:56:00,492 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-26 21:56:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-26 21:56:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-26 21:56:00,812 INFO L343 CfgBuilder]: Using library mode [2018-09-26 21:56:00,813 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:56:00 BoogieIcfgContainer [2018-09-26 21:56:00,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:56:00,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:56:00,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:56:00,818 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:56:00,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:56:00" (1/2) ... [2018-09-26 21:56:00,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71465e2d and model type Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:56:00, skipping insertion in model container [2018-09-26 21:56:00,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:56:00" (2/2) ... [2018-09-26 21:56:00,822 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-ArraysIntegefied.bpl [2018-09-26 21:56:00,833 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:56:00,841 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:56:00,895 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:56:00,896 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:56:00,896 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:56:00,896 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:56:00,896 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:56:00,897 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:56:00,897 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:56:00,897 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:56:00,897 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:56:00,912 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-09-26 21:56:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 21:56:00,919 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:00,920 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-26 21:56:00,921 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:00,928 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:00,928 INFO L82 PathProgramCache]: Analyzing trace with hash 890493448, now seen corresponding path program 1 times [2018-09-26 21:56:00,930 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:00,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:00,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:00,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:00,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:01,113 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:56:01,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:56:01,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:56:01,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:56:01,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:01,145 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-09-26 21:56:01,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:01,333 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2018-09-26 21:56:01,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:56:01,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-26 21:56:01,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:01,347 INFO L225 Difference]: With dead ends: 22 [2018-09-26 21:56:01,347 INFO L226 Difference]: Without dead ends: 10 [2018-09-26 21:56:01,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-26 21:56:01,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-26 21:56:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-26 21:56:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-26 21:56:01,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-09-26 21:56:01,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:01,386 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-26 21:56:01,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:56:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-26 21:56:01,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 21:56:01,387 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:01,387 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-26 21:56:01,388 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:01,388 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:01,388 INFO L82 PathProgramCache]: Analyzing trace with hash 892342412, now seen corresponding path program 1 times [2018-09-26 21:56:01,388 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:01,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:01,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:01,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:01,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:01,431 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:56:01,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:56:01,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:56:01,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:56:01,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:01,434 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-09-26 21:56:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:01,474 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-26 21:56:01,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:56:01,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-26 21:56:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:01,475 INFO L225 Difference]: With dead ends: 13 [2018-09-26 21:56:01,475 INFO L226 Difference]: Without dead ends: 11 [2018-09-26 21:56:01,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-26 21:56:01,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-26 21:56:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-26 21:56:01,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-26 21:56:01,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-09-26 21:56:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:01,480 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-26 21:56:01,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:56:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-26 21:56:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-26 21:56:01,481 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:01,481 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:01,481 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:01,481 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:01,481 INFO L82 PathProgramCache]: Analyzing trace with hash -391235530, now seen corresponding path program 1 times [2018-09-26 21:56:01,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:01,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:01,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:01,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:01,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:01,553 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:01,554 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:01,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:01,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:01,677 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:01,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-26 21:56:01,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 21:56:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 21:56:01,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:01,678 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-09-26 21:56:01,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:01,793 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-26 21:56:01,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 21:56:01,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-09-26 21:56:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:01,796 INFO L225 Difference]: With dead ends: 17 [2018-09-26 21:56:01,796 INFO L226 Difference]: Without dead ends: 15 [2018-09-26 21:56:01,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:01,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-26 21:56:01,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-26 21:56:01,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-26 21:56:01,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-26 21:56:01,802 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-09-26 21:56:01,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:01,802 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-26 21:56:01,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 21:56:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-26 21:56:01,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-26 21:56:01,803 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:01,805 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:01,805 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:01,806 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:01,806 INFO L82 PathProgramCache]: Analyzing trace with hash -602113312, now seen corresponding path program 2 times [2018-09-26 21:56:01,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:01,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:01,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:01,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:01,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:01,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:01,908 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 [2018-09-26 21:56:01,924 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:56:01,956 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:56:01,956 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:01,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:02,320 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:02,320 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-26 21:56:02,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 21:56:02,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 21:56:02,321 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:02,321 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-09-26 21:56:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:02,378 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-26 21:56:02,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:56:02,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-09-26 21:56:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:02,381 INFO L225 Difference]: With dead ends: 21 [2018-09-26 21:56:02,381 INFO L226 Difference]: Without dead ends: 19 [2018-09-26 21:56:02,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-26 21:56:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-26 21:56:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-26 21:56:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-26 21:56:02,386 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-09-26 21:56:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:02,388 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-26 21:56:02,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 21:56:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-26 21:56:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-26 21:56:02,389 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:02,389 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:02,390 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:02,390 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:02,390 INFO L82 PathProgramCache]: Analyzing trace with hash 334846090, now seen corresponding path program 3 times [2018-09-26 21:56:02,390 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:02,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:02,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:02,393 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:02,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:02,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:02,467 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:02,477 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:56:02,490 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-26 21:56:02,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:02,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:02,680 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:02,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-26 21:56:02,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 21:56:02,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 21:56:02,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:02,682 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-09-26 21:56:02,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:02,778 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-26 21:56:02,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 21:56:02,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-09-26 21:56:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:02,781 INFO L225 Difference]: With dead ends: 25 [2018-09-26 21:56:02,781 INFO L226 Difference]: Without dead ends: 23 [2018-09-26 21:56:02,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-26 21:56:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-26 21:56:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-26 21:56:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-26 21:56:02,786 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-09-26 21:56:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:02,786 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-26 21:56:02,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 21:56:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-26 21:56:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-26 21:56:02,787 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:02,787 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:02,787 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:02,788 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:02,788 INFO L82 PathProgramCache]: Analyzing trace with hash -747417292, now seen corresponding path program 4 times [2018-09-26 21:56:02,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:02,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:02,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:02,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:02,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:02,866 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:02,866 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:02,877 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:56:02,886 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:56:02,886 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:02,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:03,048 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:03,048 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-26 21:56:03,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 21:56:03,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 21:56:03,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:03,050 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-09-26 21:56:03,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:03,281 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-26 21:56:03,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 21:56:03,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-09-26 21:56:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:03,284 INFO L225 Difference]: With dead ends: 29 [2018-09-26 21:56:03,284 INFO L226 Difference]: Without dead ends: 27 [2018-09-26 21:56:03,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-26 21:56:03,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-26 21:56:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-26 21:56:03,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-26 21:56:03,291 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-09-26 21:56:03,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:03,292 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-26 21:56:03,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 21:56:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-26 21:56:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-26 21:56:03,300 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:03,301 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:03,301 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:03,301 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:03,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1016128734, now seen corresponding path program 5 times [2018-09-26 21:56:03,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:03,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:03,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:03,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:03,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:03,561 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:03,561 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:03,569 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:56:03,587 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-26 21:56:03,587 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:03,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:03,847 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:03,847 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-26 21:56:03,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-26 21:56:03,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-26 21:56:03,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:03,848 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-09-26 21:56:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:03,924 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-26 21:56:03,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-26 21:56:03,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-26 21:56:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:03,926 INFO L225 Difference]: With dead ends: 33 [2018-09-26 21:56:03,927 INFO L226 Difference]: Without dead ends: 31 [2018-09-26 21:56:03,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-26 21:56:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-26 21:56:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-26 21:56:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-26 21:56:03,932 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-09-26 21:56:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:03,933 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-26 21:56:03,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-26 21:56:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-26 21:56:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-26 21:56:03,934 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:03,934 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:03,934 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:03,935 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash -267873400, now seen corresponding path program 6 times [2018-09-26 21:56:03,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:03,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:03,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:03,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:03,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:04,047 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:04,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:04,058 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:56:04,091 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-26 21:56:04,092 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:04,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:04,390 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:04,390 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-26 21:56:04,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-26 21:56:04,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-26 21:56:04,391 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:04,391 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2018-09-26 21:56:04,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:04,474 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-26 21:56:04,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-26 21:56:04,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-26 21:56:04,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:04,476 INFO L225 Difference]: With dead ends: 37 [2018-09-26 21:56:04,477 INFO L226 Difference]: Without dead ends: 35 [2018-09-26 21:56:04,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-26 21:56:04,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-26 21:56:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-26 21:56:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-26 21:56:04,483 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-09-26 21:56:04,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:04,483 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-26 21:56:04,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-26 21:56:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-26 21:56:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-26 21:56:04,484 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:04,484 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:04,485 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:04,485 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:04,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947278, now seen corresponding path program 7 times [2018-09-26 21:56:04,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:04,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:04,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:04,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:04,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:04,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:04,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:04,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:04,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:05,204 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:05,205 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-26 21:56:05,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-26 21:56:05,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-26 21:56:05,206 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:05,206 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2018-09-26 21:56:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:05,356 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-26 21:56:05,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-26 21:56:05,357 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-09-26 21:56:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:05,358 INFO L225 Difference]: With dead ends: 41 [2018-09-26 21:56:05,359 INFO L226 Difference]: Without dead ends: 39 [2018-09-26 21:56:05,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:05,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-26 21:56:05,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-26 21:56:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-26 21:56:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-26 21:56:05,364 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-09-26 21:56:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:05,364 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-26 21:56:05,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-26 21:56:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-26 21:56:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-26 21:56:05,366 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:05,366 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:05,366 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:05,367 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:05,367 INFO L82 PathProgramCache]: Analyzing trace with hash -223329828, now seen corresponding path program 8 times [2018-09-26 21:56:05,367 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:05,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:05,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:05,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:05,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:05,460 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:05,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:05,473 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:56:05,492 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:56:05,492 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:05,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:05,627 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:05,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-26 21:56:05,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-26 21:56:05,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-26 21:56:05,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:05,628 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2018-09-26 21:56:05,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:05,717 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-26 21:56:05,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-26 21:56:05,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-09-26 21:56:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:05,719 INFO L225 Difference]: With dead ends: 45 [2018-09-26 21:56:05,719 INFO L226 Difference]: Without dead ends: 43 [2018-09-26 21:56:05,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-26 21:56:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-26 21:56:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-26 21:56:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-26 21:56:05,725 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-09-26 21:56:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:05,725 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-26 21:56:05,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-26 21:56:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-26 21:56:05,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-26 21:56:05,726 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:05,727 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:05,727 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:05,727 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:05,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1659551354, now seen corresponding path program 9 times [2018-09-26 21:56:05,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:05,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:05,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:05,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:05,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:05,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:05,954 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:05,963 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:56:05,990 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-26 21:56:05,990 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:05,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:06,926 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:06,927 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-26 21:56:06,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-26 21:56:06,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-26 21:56:06,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:06,928 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 12 states. [2018-09-26 21:56:07,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:07,699 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-26 21:56:07,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-26 21:56:07,701 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-09-26 21:56:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:07,702 INFO L225 Difference]: With dead ends: 49 [2018-09-26 21:56:07,703 INFO L226 Difference]: Without dead ends: 47 [2018-09-26 21:56:07,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-26 21:56:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-26 21:56:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-26 21:56:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-26 21:56:07,708 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-09-26 21:56:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:07,708 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-26 21:56:07,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-26 21:56:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-26 21:56:07,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-26 21:56:07,709 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:07,710 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:07,710 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:07,710 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:07,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2009179088, now seen corresponding path program 10 times [2018-09-26 21:56:07,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:07,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:07,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:07,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:07,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:07,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:07,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:07,849 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:56:07,862 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:56:07,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:07,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:08,026 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:08,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-26 21:56:08,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-26 21:56:08,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-26 21:56:08,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:08,027 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 13 states. [2018-09-26 21:56:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:08,284 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-26 21:56:08,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-26 21:56:08,288 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-09-26 21:56:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:08,289 INFO L225 Difference]: With dead ends: 53 [2018-09-26 21:56:08,289 INFO L226 Difference]: Without dead ends: 51 [2018-09-26 21:56:08,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-26 21:56:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-26 21:56:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-26 21:56:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-26 21:56:08,293 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-09-26 21:56:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:08,294 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-26 21:56:08,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-26 21:56:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-26 21:56:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-26 21:56:08,295 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:08,295 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:08,296 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:08,296 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:08,296 INFO L82 PathProgramCache]: Analyzing trace with hash 782635482, now seen corresponding path program 11 times [2018-09-26 21:56:08,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:08,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:08,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:08,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:08,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:08,411 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:08,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:08,440 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:56:08,464 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-26 21:56:08,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:08,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:08,718 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:08,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-26 21:56:08,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-26 21:56:08,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-26 21:56:08,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:08,719 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 14 states. [2018-09-26 21:56:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:08,830 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-26 21:56:08,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-26 21:56:08,830 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-09-26 21:56:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:08,831 INFO L225 Difference]: With dead ends: 57 [2018-09-26 21:56:08,831 INFO L226 Difference]: Without dead ends: 55 [2018-09-26 21:56:08,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:08,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-26 21:56:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-26 21:56:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-26 21:56:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-26 21:56:08,836 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-09-26 21:56:08,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:08,836 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-26 21:56:08,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-26 21:56:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-26 21:56:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-26 21:56:08,838 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:08,838 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:08,838 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:08,838 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1233576580, now seen corresponding path program 12 times [2018-09-26 21:56:08,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:08,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:08,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:08,840 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:08,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:08,967 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:08,968 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 [2018-09-26 21:56:08,975 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:56:09,133 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-26 21:56:09,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:09,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:09,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:09,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-26 21:56:09,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-26 21:56:09,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-26 21:56:09,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:09,490 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 15 states. [2018-09-26 21:56:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:09,553 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-26 21:56:09,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-26 21:56:09,554 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-09-26 21:56:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:09,555 INFO L225 Difference]: With dead ends: 61 [2018-09-26 21:56:09,555 INFO L226 Difference]: Without dead ends: 59 [2018-09-26 21:56:09,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-26 21:56:09,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-26 21:56:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-26 21:56:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-26 21:56:09,565 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-09-26 21:56:09,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:09,566 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-26 21:56:09,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-26 21:56:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-26 21:56:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-26 21:56:09,567 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:09,567 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:09,567 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:09,567 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:09,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1893420590, now seen corresponding path program 13 times [2018-09-26 21:56:09,567 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:09,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:09,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:09,568 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:09,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:09,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:09,826 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 [2018-09-26 21:56:09,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:09,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:10,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:10,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-26 21:56:10,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-26 21:56:10,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-26 21:56:10,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:10,190 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 16 states. [2018-09-26 21:56:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:10,311 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-26 21:56:10,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-26 21:56:10,312 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-09-26 21:56:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:10,313 INFO L225 Difference]: With dead ends: 65 [2018-09-26 21:56:10,313 INFO L226 Difference]: Without dead ends: 63 [2018-09-26 21:56:10,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-26 21:56:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-26 21:56:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-26 21:56:10,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-26 21:56:10,320 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-09-26 21:56:10,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:10,320 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-26 21:56:10,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-26 21:56:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-26 21:56:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-26 21:56:10,321 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:10,322 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:10,322 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:10,322 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:10,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1151478568, now seen corresponding path program 14 times [2018-09-26 21:56:10,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:10,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:10,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:10,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:10,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:10,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:10,456 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 [2018-09-26 21:56:10,467 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:56:10,505 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:56:10,506 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:10,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:10,655 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:10,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-26 21:56:10,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-26 21:56:10,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-26 21:56:10,655 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:10,656 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 17 states. [2018-09-26 21:56:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:10,788 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-26 21:56:10,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-26 21:56:10,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-09-26 21:56:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:10,790 INFO L225 Difference]: With dead ends: 69 [2018-09-26 21:56:10,790 INFO L226 Difference]: Without dead ends: 67 [2018-09-26 21:56:10,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:10,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-26 21:56:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-26 21:56:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-26 21:56:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-26 21:56:10,796 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-09-26 21:56:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:10,796 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-26 21:56:10,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-26 21:56:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-26 21:56:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-26 21:56:10,797 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:10,797 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:10,798 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:10,798 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:10,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1586034306, now seen corresponding path program 15 times [2018-09-26 21:56:10,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:10,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:10,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:10,961 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:10,961 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 [2018-09-26 21:56:10,969 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:56:11,031 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-26 21:56:11,031 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:11,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:11,363 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:11,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-26 21:56:11,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-26 21:56:11,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-26 21:56:11,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:11,364 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 18 states. [2018-09-26 21:56:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:11,481 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-26 21:56:11,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-26 21:56:11,482 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-09-26 21:56:11,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:11,483 INFO L225 Difference]: With dead ends: 73 [2018-09-26 21:56:11,483 INFO L226 Difference]: Without dead ends: 71 [2018-09-26 21:56:11,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-26 21:56:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-26 21:56:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-26 21:56:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-26 21:56:11,489 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-09-26 21:56:11,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:11,489 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-26 21:56:11,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-26 21:56:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-26 21:56:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-26 21:56:11,490 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:11,490 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:11,491 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:11,491 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1318531884, now seen corresponding path program 16 times [2018-09-26 21:56:11,491 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:11,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:11,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:11,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:11,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:11,657 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:11,657 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 [2018-09-26 21:56:11,664 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:56:11,693 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:56:11,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:11,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:12,339 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:12,339 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-26 21:56:12,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-26 21:56:12,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-26 21:56:12,340 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:12,340 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 19 states. [2018-09-26 21:56:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:12,505 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-26 21:56:12,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-26 21:56:12,505 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-09-26 21:56:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:12,506 INFO L225 Difference]: With dead ends: 77 [2018-09-26 21:56:12,506 INFO L226 Difference]: Without dead ends: 75 [2018-09-26 21:56:12,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:12,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-26 21:56:12,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-26 21:56:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-26 21:56:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-26 21:56:12,512 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-09-26 21:56:12,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:12,513 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-26 21:56:12,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-26 21:56:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-26 21:56:12,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-26 21:56:12,514 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:12,514 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:12,514 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:12,514 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:12,515 INFO L82 PathProgramCache]: Analyzing trace with hash -561837354, now seen corresponding path program 17 times [2018-09-26 21:56:12,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:12,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:12,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:12,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:12,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:12,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:12,878 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:12,885 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:56:12,907 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-26 21:56:12,907 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:12,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:13,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:13,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-26 21:56:13,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-26 21:56:13,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-26 21:56:13,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:13,114 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 20 states. [2018-09-26 21:56:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:13,319 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-26 21:56:13,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-26 21:56:13,319 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-09-26 21:56:13,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:13,320 INFO L225 Difference]: With dead ends: 81 [2018-09-26 21:56:13,320 INFO L226 Difference]: Without dead ends: 79 [2018-09-26 21:56:13,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-26 21:56:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-26 21:56:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-26 21:56:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-26 21:56:13,325 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-09-26 21:56:13,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:13,326 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-26 21:56:13,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-26 21:56:13,326 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-26 21:56:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-26 21:56:13,327 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:13,327 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:13,327 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:13,327 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:13,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1611070848, now seen corresponding path program 18 times [2018-09-26 21:56:13,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:13,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:13,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:13,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:13,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:13,530 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:13,530 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 [2018-09-26 21:56:13,539 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:56:13,569 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-26 21:56:13,569 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:13,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:13,735 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:13,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-26 21:56:13,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-26 21:56:13,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-26 21:56:13,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:13,737 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 21 states. [2018-09-26 21:56:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:13,895 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-26 21:56:13,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-26 21:56:13,895 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-09-26 21:56:13,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:13,896 INFO L225 Difference]: With dead ends: 85 [2018-09-26 21:56:13,896 INFO L226 Difference]: Without dead ends: 83 [2018-09-26 21:56:13,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-26 21:56:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-26 21:56:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-26 21:56:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-26 21:56:13,901 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-09-26 21:56:13,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:13,902 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-26 21:56:13,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-26 21:56:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-26 21:56:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-26 21:56:13,903 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:13,903 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:13,903 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:13,903 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:13,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1013085398, now seen corresponding path program 19 times [2018-09-26 21:56:13,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:13,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:13,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:13,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:13,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:14,062 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:14,063 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 [2018-09-26 21:56:14,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:14,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:14,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:14,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-26 21:56:14,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-26 21:56:14,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-26 21:56:14,294 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:14,294 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-09-26 21:56:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:14,410 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-26 21:56:14,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-26 21:56:14,410 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-09-26 21:56:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:14,411 INFO L225 Difference]: With dead ends: 89 [2018-09-26 21:56:14,411 INFO L226 Difference]: Without dead ends: 87 [2018-09-26 21:56:14,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-26 21:56:14,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-26 21:56:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-26 21:56:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-26 21:56:14,415 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-09-26 21:56:14,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:14,415 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-26 21:56:14,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-26 21:56:14,415 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-26 21:56:14,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-26 21:56:14,416 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:14,416 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:14,416 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:14,417 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:14,417 INFO L82 PathProgramCache]: Analyzing trace with hash 947991508, now seen corresponding path program 20 times [2018-09-26 21:56:14,417 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:14,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:14,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:14,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:14,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:14,652 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:14,652 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 [2018-09-26 21:56:14,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:56:14,690 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:56:14,691 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:14,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:14,876 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:14,876 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-26 21:56:14,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-26 21:56:14,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-26 21:56:14,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:14,877 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 23 states. [2018-09-26 21:56:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:14,970 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-26 21:56:14,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-26 21:56:14,972 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-09-26 21:56:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:14,973 INFO L225 Difference]: With dead ends: 93 [2018-09-26 21:56:14,973 INFO L226 Difference]: Without dead ends: 91 [2018-09-26 21:56:14,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-26 21:56:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-26 21:56:14,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-26 21:56:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-26 21:56:14,977 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-09-26 21:56:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:14,977 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-26 21:56:14,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-26 21:56:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-26 21:56:14,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-26 21:56:14,978 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:14,978 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:14,978 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:14,978 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:14,979 INFO L82 PathProgramCache]: Analyzing trace with hash -861112450, now seen corresponding path program 21 times [2018-09-26 21:56:14,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:14,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:14,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:14,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:14,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:16,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:16,303 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 [2018-09-26 21:56:16,311 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:56:16,339 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-26 21:56:16,339 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:16,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:16,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:16,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-26 21:56:16,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-26 21:56:16,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-26 21:56:16,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:16,522 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 24 states. [2018-09-26 21:56:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:16,692 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-26 21:56:16,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-26 21:56:16,693 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-09-26 21:56:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:16,694 INFO L225 Difference]: With dead ends: 97 [2018-09-26 21:56:16,694 INFO L226 Difference]: Without dead ends: 95 [2018-09-26 21:56:16,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:16,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-26 21:56:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-26 21:56:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-26 21:56:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-26 21:56:16,698 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-09-26 21:56:16,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:16,698 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-26 21:56:16,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-26 21:56:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-26 21:56:16,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-26 21:56:16,699 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:16,699 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:16,699 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:16,699 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:16,699 INFO L82 PathProgramCache]: Analyzing trace with hash 215602728, now seen corresponding path program 22 times [2018-09-26 21:56:16,700 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:16,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:16,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:16,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:16,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:16,999 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:16,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:56:17,010 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:56:17,054 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:56:17,055 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:17,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:17,414 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:17,414 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-26 21:56:17,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-26 21:56:17,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-26 21:56:17,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:17,415 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 25 states. [2018-09-26 21:56:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:17,715 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-26 21:56:17,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-26 21:56:17,715 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-09-26 21:56:17,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:17,716 INFO L225 Difference]: With dead ends: 101 [2018-09-26 21:56:17,716 INFO L226 Difference]: Without dead ends: 99 [2018-09-26 21:56:17,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-26 21:56:17,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-26 21:56:17,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-26 21:56:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-26 21:56:17,719 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-09-26 21:56:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:17,720 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-26 21:56:17,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-26 21:56:17,720 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-26 21:56:17,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-26 21:56:17,721 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:17,721 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:17,721 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:17,721 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:17,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1534865454, now seen corresponding path program 23 times [2018-09-26 21:56:17,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:17,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:17,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:17,723 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:17,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:18,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:18,127 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 [2018-09-26 21:56:18,145 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:56:18,182 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-26 21:56:18,182 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:18,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:18,518 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:18,518 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-26 21:56:18,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-26 21:56:18,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-26 21:56:18,519 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:18,519 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 26 states. [2018-09-26 21:56:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:18,853 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-26 21:56:18,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-26 21:56:18,854 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-09-26 21:56:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:18,855 INFO L225 Difference]: With dead ends: 105 [2018-09-26 21:56:18,855 INFO L226 Difference]: Without dead ends: 103 [2018-09-26 21:56:18,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-26 21:56:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-26 21:56:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-26 21:56:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-26 21:56:18,858 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-09-26 21:56:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:18,858 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-26 21:56:18,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-26 21:56:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-26 21:56:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-26 21:56:18,859 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:18,859 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:18,859 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:18,859 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:18,860 INFO L82 PathProgramCache]: Analyzing trace with hash -35330948, now seen corresponding path program 24 times [2018-09-26 21:56:18,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:18,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:18,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:18,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:18,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:19,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:19,090 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 [2018-09-26 21:56:19,097 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:56:19,129 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-26 21:56:19,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:19,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:19,423 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:19,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-26 21:56:19,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-26 21:56:19,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-26 21:56:19,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:19,424 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 27 states. [2018-09-26 21:56:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:19,523 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-26 21:56:19,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-26 21:56:19,524 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-09-26 21:56:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:19,525 INFO L225 Difference]: With dead ends: 109 [2018-09-26 21:56:19,526 INFO L226 Difference]: Without dead ends: 107 [2018-09-26 21:56:19,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-26 21:56:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-26 21:56:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-26 21:56:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-26 21:56:19,529 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-09-26 21:56:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:19,529 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-26 21:56:19,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-26 21:56:19,529 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-26 21:56:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-26 21:56:19,530 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:19,530 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:19,530 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:19,530 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:19,530 INFO L82 PathProgramCache]: Analyzing trace with hash -503868378, now seen corresponding path program 25 times [2018-09-26 21:56:19,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:19,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:19,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:19,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:19,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:19,823 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:19,823 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:19,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:19,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:20,136 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:20,137 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-26 21:56:20,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-26 21:56:20,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-26 21:56:20,137 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:20,138 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 28 states. [2018-09-26 21:56:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:20,300 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-26 21:56:20,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-26 21:56:20,301 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-09-26 21:56:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:20,302 INFO L225 Difference]: With dead ends: 113 [2018-09-26 21:56:20,302 INFO L226 Difference]: Without dead ends: 111 [2018-09-26 21:56:20,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-26 21:56:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-26 21:56:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-26 21:56:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-26 21:56:20,306 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-09-26 21:56:20,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:20,306 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-26 21:56:20,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-26 21:56:20,306 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-26 21:56:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-26 21:56:20,307 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:20,307 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:20,307 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:20,307 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:20,307 INFO L82 PathProgramCache]: Analyzing trace with hash 410410704, now seen corresponding path program 26 times [2018-09-26 21:56:20,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:20,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:20,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:20,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:20,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:20,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:20,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:20,649 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:56:20,674 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:56:20,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:20,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:20,891 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:20,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-26 21:56:20,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-26 21:56:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-26 21:56:20,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:20,892 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 29 states. [2018-09-26 21:56:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:21,221 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-26 21:56:21,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-26 21:56:21,221 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-09-26 21:56:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:21,222 INFO L225 Difference]: With dead ends: 117 [2018-09-26 21:56:21,223 INFO L226 Difference]: Without dead ends: 115 [2018-09-26 21:56:21,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-26 21:56:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-26 21:56:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-26 21:56:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-26 21:56:21,226 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-09-26 21:56:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:21,226 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-26 21:56:21,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-26 21:56:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-26 21:56:21,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-26 21:56:21,227 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:21,227 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:21,227 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:21,227 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:21,227 INFO L82 PathProgramCache]: Analyzing trace with hash 131843194, now seen corresponding path program 27 times [2018-09-26 21:56:21,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:21,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:21,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:21,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:21,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:22,130 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:22,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:22,137 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:56:22,177 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-26 21:56:22,177 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:22,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:22,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:22,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-26 21:56:22,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-26 21:56:22,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-26 21:56:22,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:22,496 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 30 states. [2018-09-26 21:56:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:22,800 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-26 21:56:22,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-26 21:56:22,800 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-09-26 21:56:22,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:22,802 INFO L225 Difference]: With dead ends: 121 [2018-09-26 21:56:22,802 INFO L226 Difference]: Without dead ends: 119 [2018-09-26 21:56:22,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-26 21:56:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-26 21:56:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-26 21:56:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-26 21:56:22,806 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-09-26 21:56:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:22,806 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-26 21:56:22,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-26 21:56:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-26 21:56:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-26 21:56:22,807 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:22,807 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:22,807 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:22,808 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:22,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1432503588, now seen corresponding path program 28 times [2018-09-26 21:56:22,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:22,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:22,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:22,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:22,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:23,015 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:23,015 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:23,024 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:56:23,051 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:56:23,051 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:23,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:23,341 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:23,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-26 21:56:23,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-26 21:56:23,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-26 21:56:23,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:23,342 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 31 states. [2018-09-26 21:56:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:23,542 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-26 21:56:23,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-26 21:56:23,543 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-09-26 21:56:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:23,544 INFO L225 Difference]: With dead ends: 125 [2018-09-26 21:56:23,544 INFO L226 Difference]: Without dead ends: 123 [2018-09-26 21:56:23,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-26 21:56:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-26 21:56:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-26 21:56:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-26 21:56:23,548 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-09-26 21:56:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:23,549 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-26 21:56:23,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-26 21:56:23,549 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-26 21:56:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-26 21:56:23,549 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:23,550 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:23,550 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:23,550 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:23,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2063310642, now seen corresponding path program 29 times [2018-09-26 21:56:23,550 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:23,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:23,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:23,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:23,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:24,022 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:24,023 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 [2018-09-26 21:56:24,030 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:56:24,092 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-26 21:56:24,092 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:24,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:24,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:24,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-26 21:56:24,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-26 21:56:24,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-26 21:56:24,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:24,369 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 32 states. [2018-09-26 21:56:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:24,567 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-26 21:56:24,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-26 21:56:24,568 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-09-26 21:56:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:24,569 INFO L225 Difference]: With dead ends: 129 [2018-09-26 21:56:24,569 INFO L226 Difference]: Without dead ends: 127 [2018-09-26 21:56:24,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-26 21:56:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-26 21:56:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-26 21:56:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-26 21:56:24,573 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-09-26 21:56:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:24,573 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-26 21:56:24,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-26 21:56:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-26 21:56:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-26 21:56:24,574 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:24,574 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:24,574 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:24,574 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:24,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1719888008, now seen corresponding path program 30 times [2018-09-26 21:56:24,574 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:24,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:24,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:24,575 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:24,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:24,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:24,805 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 [2018-09-26 21:56:24,813 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:56:24,848 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-26 21:56:24,848 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:24,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:25,119 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:25,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-26 21:56:25,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-26 21:56:25,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-26 21:56:25,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:25,120 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-09-26 21:56:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:25,294 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-26 21:56:25,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-26 21:56:25,295 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-09-26 21:56:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:25,296 INFO L225 Difference]: With dead ends: 133 [2018-09-26 21:56:25,296 INFO L226 Difference]: Without dead ends: 131 [2018-09-26 21:56:25,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-26 21:56:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-26 21:56:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-26 21:56:25,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-26 21:56:25,300 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-09-26 21:56:25,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:25,301 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-26 21:56:25,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-26 21:56:25,301 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-26 21:56:25,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-26 21:56:25,302 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:25,302 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:25,302 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:25,302 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:25,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1270519518, now seen corresponding path program 31 times [2018-09-26 21:56:25,303 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:25,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:25,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:25,304 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:25,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:25,537 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:25,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:25,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:25,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:25,971 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:25,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-26 21:56:25,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-26 21:56:25,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-26 21:56:25,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:25,972 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 34 states. [2018-09-26 21:56:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:26,168 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-26 21:56:26,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-26 21:56:26,169 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-09-26 21:56:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:26,170 INFO L225 Difference]: With dead ends: 137 [2018-09-26 21:56:26,170 INFO L226 Difference]: Without dead ends: 135 [2018-09-26 21:56:26,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-26 21:56:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-26 21:56:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-26 21:56:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-26 21:56:26,173 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-09-26 21:56:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:26,174 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-26 21:56:26,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-26 21:56:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-26 21:56:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-26 21:56:26,175 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:26,175 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:26,175 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:26,175 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:26,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1248242228, now seen corresponding path program 32 times [2018-09-26 21:56:26,175 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:26,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:26,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:26,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:26,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:26,578 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:26,578 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 [2018-09-26 21:56:26,585 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:56:26,616 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:56:26,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:26,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:26,899 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:26,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-26 21:56:26,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-26 21:56:26,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-26 21:56:26,900 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:26,900 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 35 states. [2018-09-26 21:56:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:27,124 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-26 21:56:27,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-26 21:56:27,125 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-09-26 21:56:27,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:27,126 INFO L225 Difference]: With dead ends: 141 [2018-09-26 21:56:27,126 INFO L226 Difference]: Without dead ends: 139 [2018-09-26 21:56:27,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-26 21:56:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-26 21:56:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-26 21:56:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-26 21:56:27,129 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-09-26 21:56:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:27,129 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-26 21:56:27,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-26 21:56:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-26 21:56:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-26 21:56:27,130 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:27,130 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:27,130 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:27,131 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:27,131 INFO L82 PathProgramCache]: Analyzing trace with hash -596451978, now seen corresponding path program 33 times [2018-09-26 21:56:27,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:27,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:27,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:27,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:27,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:27,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:27,410 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 [2018-09-26 21:56:27,419 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:56:27,458 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-26 21:56:27,459 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:27,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:27,934 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:27,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-26 21:56:27,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-26 21:56:27,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-26 21:56:27,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:27,936 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 36 states. [2018-09-26 21:56:28,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:28,147 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-26 21:56:28,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-26 21:56:28,148 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-09-26 21:56:28,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:28,149 INFO L225 Difference]: With dead ends: 145 [2018-09-26 21:56:28,149 INFO L226 Difference]: Without dead ends: 143 [2018-09-26 21:56:28,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-26 21:56:28,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-26 21:56:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-26 21:56:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-26 21:56:28,153 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-09-26 21:56:28,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:28,153 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-26 21:56:28,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-26 21:56:28,153 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-26 21:56:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-26 21:56:28,154 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:28,154 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:28,155 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:28,155 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:28,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1720483872, now seen corresponding path program 34 times [2018-09-26 21:56:28,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:28,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:28,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:28,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:28,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:28,513 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:28,513 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 [2018-09-26 21:56:28,531 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:56:28,563 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:56:28,563 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:28,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:28,894 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:28,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-26 21:56:28,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-26 21:56:28,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-26 21:56:28,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:28,895 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 37 states. [2018-09-26 21:56:29,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:29,147 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-26 21:56:29,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-26 21:56:29,147 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-09-26 21:56:29,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:29,149 INFO L225 Difference]: With dead ends: 149 [2018-09-26 21:56:29,149 INFO L226 Difference]: Without dead ends: 147 [2018-09-26 21:56:29,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-26 21:56:29,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-26 21:56:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-26 21:56:29,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-26 21:56:29,152 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-09-26 21:56:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:29,153 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-26 21:56:29,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-26 21:56:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-26 21:56:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-26 21:56:29,154 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:29,154 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:29,154 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:29,154 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:29,154 INFO L82 PathProgramCache]: Analyzing trace with hash 811646410, now seen corresponding path program 35 times [2018-09-26 21:56:29,154 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:29,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:29,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:29,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:29,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:30,224 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:30,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:30,233 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:56:30,323 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-26 21:56:30,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:30,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:32,049 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:32,049 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-26 21:56:32,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-26 21:56:32,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-26 21:56:32,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:32,050 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 38 states. [2018-09-26 21:56:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:32,269 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-09-26 21:56:32,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-26 21:56:32,270 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-09-26 21:56:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:32,271 INFO L225 Difference]: With dead ends: 153 [2018-09-26 21:56:32,271 INFO L226 Difference]: Without dead ends: 151 [2018-09-26 21:56:32,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:32,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-26 21:56:32,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-26 21:56:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-26 21:56:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-09-26 21:56:32,274 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-09-26 21:56:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:32,274 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-09-26 21:56:32,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-26 21:56:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-09-26 21:56:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-26 21:56:32,275 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:32,276 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:32,276 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:32,276 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:32,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1428821620, now seen corresponding path program 36 times [2018-09-26 21:56:32,276 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:32,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:32,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:32,277 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:32,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:33,014 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:33,014 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 [2018-09-26 21:56:33,022 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:56:33,081 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-26 21:56:33,081 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:33,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:33,403 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:33,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-26 21:56:33,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-26 21:56:33,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-26 21:56:33,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:33,404 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 39 states. [2018-09-26 21:56:33,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:33,585 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-09-26 21:56:33,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-26 21:56:33,585 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-09-26 21:56:33,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:33,586 INFO L225 Difference]: With dead ends: 157 [2018-09-26 21:56:33,586 INFO L226 Difference]: Without dead ends: 155 [2018-09-26 21:56:33,587 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:33,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-26 21:56:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-26 21:56:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-26 21:56:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-09-26 21:56:33,590 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-09-26 21:56:33,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:33,591 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-09-26 21:56:33,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-26 21:56:33,591 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-09-26 21:56:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-26 21:56:33,592 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:33,592 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:33,592 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:33,592 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:33,593 INFO L82 PathProgramCache]: Analyzing trace with hash -823981538, now seen corresponding path program 37 times [2018-09-26 21:56:33,593 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:33,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:33,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:33,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:33,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:34,426 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:34,426 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 [2018-09-26 21:56:34,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:34,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:34,796 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:34,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-26 21:56:34,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-26 21:56:34,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-26 21:56:34,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:34,797 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 40 states. [2018-09-26 21:56:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:35,053 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-09-26 21:56:35,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-26 21:56:35,056 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-09-26 21:56:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:35,057 INFO L225 Difference]: With dead ends: 161 [2018-09-26 21:56:35,057 INFO L226 Difference]: Without dead ends: 159 [2018-09-26 21:56:35,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-26 21:56:35,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-26 21:56:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-26 21:56:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-09-26 21:56:35,060 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 154 [2018-09-26 21:56:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:35,060 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-09-26 21:56:35,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-26 21:56:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-09-26 21:56:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-26 21:56:35,061 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:35,062 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:35,062 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:35,062 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:35,062 INFO L82 PathProgramCache]: Analyzing trace with hash 373692616, now seen corresponding path program 38 times [2018-09-26 21:56:35,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:35,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:35,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:35,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:35,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:35,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:35,863 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 [2018-09-26 21:56:35,871 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:56:35,911 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:56:35,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:35,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:37,603 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:37,604 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-26 21:56:37,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-26 21:56:37,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-26 21:56:37,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:37,605 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 41 states. [2018-09-26 21:56:37,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:37,967 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-09-26 21:56:37,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-26 21:56:37,967 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-09-26 21:56:37,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:37,968 INFO L225 Difference]: With dead ends: 165 [2018-09-26 21:56:37,968 INFO L226 Difference]: Without dead ends: 163 [2018-09-26 21:56:37,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:37,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-26 21:56:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-26 21:56:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-26 21:56:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-09-26 21:56:37,971 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 158 [2018-09-26 21:56:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:37,971 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-09-26 21:56:37,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-26 21:56:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-09-26 21:56:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-26 21:56:37,972 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:37,973 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:37,973 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:37,973 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:37,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1026702734, now seen corresponding path program 39 times [2018-09-26 21:56:37,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:37,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:37,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:37,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:37,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:39,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:39,120 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:39,132 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:56:39,176 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-26 21:56:39,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:39,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:39,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:39,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-26 21:56:39,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-26 21:56:39,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-26 21:56:39,534 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:39,534 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 42 states. [2018-09-26 21:56:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:39,939 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-09-26 21:56:39,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-26 21:56:39,939 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-09-26 21:56:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:39,941 INFO L225 Difference]: With dead ends: 169 [2018-09-26 21:56:39,941 INFO L226 Difference]: Without dead ends: 167 [2018-09-26 21:56:39,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-26 21:56:39,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-26 21:56:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-26 21:56:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-09-26 21:56:39,944 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 162 [2018-09-26 21:56:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:39,944 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-09-26 21:56:39,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-26 21:56:39,945 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-09-26 21:56:39,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-26 21:56:39,945 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:39,946 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:39,946 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:39,946 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:39,946 INFO L82 PathProgramCache]: Analyzing trace with hash 716474140, now seen corresponding path program 40 times [2018-09-26 21:56:39,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:39,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:39,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:39,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:39,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:40,634 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:40,635 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:40,642 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:56:40,676 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:56:40,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:40,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:41,034 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:41,034 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-26 21:56:41,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-26 21:56:41,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-26 21:56:41,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:41,035 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 43 states. [2018-09-26 21:56:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:41,247 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-09-26 21:56:41,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-26 21:56:41,248 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-09-26 21:56:41,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:41,249 INFO L225 Difference]: With dead ends: 173 [2018-09-26 21:56:41,249 INFO L226 Difference]: Without dead ends: 171 [2018-09-26 21:56:41,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-26 21:56:41,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-26 21:56:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-26 21:56:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-09-26 21:56:41,253 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 166 [2018-09-26 21:56:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:41,254 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-09-26 21:56:41,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-26 21:56:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-09-26 21:56:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-26 21:56:41,255 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:41,255 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:41,255 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:41,255 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:41,255 INFO L82 PathProgramCache]: Analyzing trace with hash 49604294, now seen corresponding path program 41 times [2018-09-26 21:56:41,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:41,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:41,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:41,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:41,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:41,651 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:41,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:41,658 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:56:41,720 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-26 21:56:41,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:41,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:42,122 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:42,123 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-26 21:56:42,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-26 21:56:42,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-26 21:56:42,124 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:42,124 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 44 states. [2018-09-26 21:56:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:42,549 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-09-26 21:56:42,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-26 21:56:42,549 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-09-26 21:56:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:42,550 INFO L225 Difference]: With dead ends: 177 [2018-09-26 21:56:42,550 INFO L226 Difference]: Without dead ends: 175 [2018-09-26 21:56:42,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-26 21:56:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-26 21:56:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-26 21:56:42,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-09-26 21:56:42,553 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 170 [2018-09-26 21:56:42,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:42,553 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-09-26 21:56:42,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-26 21:56:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-09-26 21:56:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-26 21:56:42,559 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:42,559 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:42,559 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:42,559 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:42,560 INFO L82 PathProgramCache]: Analyzing trace with hash -11968144, now seen corresponding path program 42 times [2018-09-26 21:56:42,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:42,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:42,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:42,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:42,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:43,335 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:43,335 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:43,343 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:56:43,394 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-26 21:56:43,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:43,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:43,824 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:43,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-26 21:56:43,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-26 21:56:43,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-26 21:56:43,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:43,825 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 45 states. [2018-09-26 21:56:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:44,161 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-09-26 21:56:44,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-26 21:56:44,161 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-09-26 21:56:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:44,162 INFO L225 Difference]: With dead ends: 181 [2018-09-26 21:56:44,162 INFO L226 Difference]: Without dead ends: 179 [2018-09-26 21:56:44,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-26 21:56:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-26 21:56:44,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-26 21:56:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-09-26 21:56:44,165 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 174 [2018-09-26 21:56:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:44,165 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-09-26 21:56:44,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-26 21:56:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-09-26 21:56:44,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-26 21:56:44,166 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:44,166 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:44,166 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:44,166 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:44,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516698, now seen corresponding path program 43 times [2018-09-26 21:56:44,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:44,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:44,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:44,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:44,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:45,243 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:45,243 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:45,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:45,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:45,672 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:45,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-26 21:56:45,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-26 21:56:45,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-26 21:56:45,673 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:45,673 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 46 states. [2018-09-26 21:56:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:45,939 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-09-26 21:56:45,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-26 21:56:45,939 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-09-26 21:56:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:45,940 INFO L225 Difference]: With dead ends: 185 [2018-09-26 21:56:45,940 INFO L226 Difference]: Without dead ends: 183 [2018-09-26 21:56:45,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-26 21:56:45,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-26 21:56:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-26 21:56:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-09-26 21:56:45,944 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 178 [2018-09-26 21:56:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:45,944 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-09-26 21:56:45,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-26 21:56:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-09-26 21:56:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-26 21:56:45,945 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:45,945 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:45,945 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:45,945 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:45,945 INFO L82 PathProgramCache]: Analyzing trace with hash -321345596, now seen corresponding path program 44 times [2018-09-26 21:56:45,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:45,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:45,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:45,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:45,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:46,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:46,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:46,433 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:56:46,468 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:56:46,468 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:46,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:46,887 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:46,887 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-26 21:56:46,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-26 21:56:46,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-26 21:56:46,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:46,888 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 47 states. [2018-09-26 21:56:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:47,207 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-09-26 21:56:47,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-26 21:56:47,207 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-09-26 21:56:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:47,208 INFO L225 Difference]: With dead ends: 189 [2018-09-26 21:56:47,208 INFO L226 Difference]: Without dead ends: 187 [2018-09-26 21:56:47,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-26 21:56:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-26 21:56:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-26 21:56:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-09-26 21:56:47,211 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 182 [2018-09-26 21:56:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:47,211 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-09-26 21:56:47,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-26 21:56:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-09-26 21:56:47,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-26 21:56:47,213 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:47,213 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:47,213 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:47,213 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:47,213 INFO L82 PathProgramCache]: Analyzing trace with hash -548899986, now seen corresponding path program 45 times [2018-09-26 21:56:47,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:47,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:47,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:47,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:47,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:48,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:48,012 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 [2018-09-26 21:56:48,019 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:56:48,103 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-26 21:56:48,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:48,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:49,130 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:49,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-26 21:56:49,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-26 21:56:49,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-26 21:56:49,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:49,132 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 48 states. [2018-09-26 21:56:49,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:49,711 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-09-26 21:56:49,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-26 21:56:49,712 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-09-26 21:56:49,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:49,713 INFO L225 Difference]: With dead ends: 193 [2018-09-26 21:56:49,713 INFO L226 Difference]: Without dead ends: 191 [2018-09-26 21:56:49,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-26 21:56:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-26 21:56:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-26 21:56:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-09-26 21:56:49,715 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 186 [2018-09-26 21:56:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:49,716 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-09-26 21:56:49,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-26 21:56:49,716 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-09-26 21:56:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-26 21:56:49,717 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:49,717 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:49,717 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:49,717 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:49,718 INFO L82 PathProgramCache]: Analyzing trace with hash 943086104, now seen corresponding path program 46 times [2018-09-26 21:56:49,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:49,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:49,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:49,718 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:49,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:50,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:50,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:50,315 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:56:50,353 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:56:50,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:50,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:50,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:50,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-26 21:56:50,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-26 21:56:50,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-26 21:56:50,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:50,941 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 49 states. [2018-09-26 21:56:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:51,229 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-09-26 21:56:51,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-26 21:56:51,229 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-09-26 21:56:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:51,230 INFO L225 Difference]: With dead ends: 197 [2018-09-26 21:56:51,230 INFO L226 Difference]: Without dead ends: 195 [2018-09-26 21:56:51,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-26 21:56:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-26 21:56:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-26 21:56:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-09-26 21:56:51,234 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 190 [2018-09-26 21:56:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:51,234 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-09-26 21:56:51,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-26 21:56:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-09-26 21:56:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-26 21:56:51,236 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:51,236 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:51,236 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:51,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:51,236 INFO L82 PathProgramCache]: Analyzing trace with hash 85777346, now seen corresponding path program 47 times [2018-09-26 21:56:51,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:51,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:51,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:51,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:51,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:51,894 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:51,894 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 [2018-09-26 21:56:51,902 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:56:51,964 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-26 21:56:51,964 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:51,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:52,440 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:52,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-26 21:56:52,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-26 21:56:52,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-26 21:56:52,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:52,441 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 50 states. [2018-09-26 21:56:52,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:52,832 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-09-26 21:56:52,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-26 21:56:52,833 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-09-26 21:56:52,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:52,834 INFO L225 Difference]: With dead ends: 201 [2018-09-26 21:56:52,834 INFO L226 Difference]: Without dead ends: 199 [2018-09-26 21:56:52,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:52,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-26 21:56:52,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-26 21:56:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-26 21:56:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-09-26 21:56:52,839 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 194 [2018-09-26 21:56:52,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:52,839 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-09-26 21:56:52,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-26 21:56:52,839 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-09-26 21:56:52,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-26 21:56:52,840 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:52,840 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:52,840 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:52,840 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:52,840 INFO L82 PathProgramCache]: Analyzing trace with hash 305559660, now seen corresponding path program 48 times [2018-09-26 21:56:52,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:52,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:52,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:52,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:52,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:53,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:53,206 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 [2018-09-26 21:56:53,213 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:56:53,298 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-26 21:56:53,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:53,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:53,816 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:53,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-26 21:56:53,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-26 21:56:53,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-26 21:56:53,817 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:53,818 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 51 states. [2018-09-26 21:56:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:54,255 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-09-26 21:56:54,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-26 21:56:54,256 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-09-26 21:56:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:54,257 INFO L225 Difference]: With dead ends: 205 [2018-09-26 21:56:54,257 INFO L226 Difference]: Without dead ends: 203 [2018-09-26 21:56:54,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:54,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-26 21:56:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-26 21:56:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-26 21:56:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-09-26 21:56:54,259 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 198 [2018-09-26 21:56:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:54,259 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-09-26 21:56:54,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-26 21:56:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-09-26 21:56:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-26 21:56:54,260 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:54,261 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:54,261 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:54,261 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:54,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1971474410, now seen corresponding path program 49 times [2018-09-26 21:56:54,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:54,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:54,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:54,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:54,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:54,832 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:54,832 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 [2018-09-26 21:56:54,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:54,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:55,351 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:55,351 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-26 21:56:55,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-26 21:56:55,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-26 21:56:55,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:55,352 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 52 states. [2018-09-26 21:56:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:55,799 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-09-26 21:56:55,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-26 21:56:55,800 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-09-26 21:56:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:55,801 INFO L225 Difference]: With dead ends: 209 [2018-09-26 21:56:55,801 INFO L226 Difference]: Without dead ends: 207 [2018-09-26 21:56:55,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:55,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-26 21:56:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-26 21:56:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-26 21:56:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-09-26 21:56:55,804 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 202 [2018-09-26 21:56:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:55,805 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-09-26 21:56:55,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-26 21:56:55,805 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-09-26 21:56:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-26 21:56:55,806 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:55,806 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:55,806 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:55,807 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:55,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1750269248, now seen corresponding path program 50 times [2018-09-26 21:56:55,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:55,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:55,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:55,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:56:55,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:56,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:56,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:56:56,523 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:56:56,562 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:56:56,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:56,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:57,040 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:57,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-26 21:56:57,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-26 21:56:57,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-26 21:56:57,042 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:57,042 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 53 states. [2018-09-26 21:56:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:57,419 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-09-26 21:56:57,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-26 21:56:57,420 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-09-26 21:56:57,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:57,421 INFO L225 Difference]: With dead ends: 213 [2018-09-26 21:56:57,421 INFO L226 Difference]: Without dead ends: 211 [2018-09-26 21:56:57,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:57,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-26 21:56:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-26 21:56:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-26 21:56:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-09-26 21:56:57,425 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 206 [2018-09-26 21:56:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:57,425 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-09-26 21:56:57,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-26 21:56:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-09-26 21:56:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-26 21:56:57,426 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:57,426 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:57,427 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:57,427 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:57,427 INFO L82 PathProgramCache]: Analyzing trace with hash 37679210, now seen corresponding path program 51 times [2018-09-26 21:56:57,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:57,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:57,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:57,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:57,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:56:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:58,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:56:58,012 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 [2018-09-26 21:56:58,021 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:56:58,290 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-26 21:56:58,291 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:56:58,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:56:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:56:59,115 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:56:59,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-26 21:56:59,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-26 21:56:59,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-26 21:56:59,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:56:59,116 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 54 states. [2018-09-26 21:56:59,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:56:59,576 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-09-26 21:56:59,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-26 21:56:59,577 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-09-26 21:56:59,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:56:59,578 INFO L225 Difference]: With dead ends: 217 [2018-09-26 21:56:59,578 INFO L226 Difference]: Without dead ends: 215 [2018-09-26 21:56:59,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:56:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-26 21:56:59,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-26 21:56:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-26 21:56:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-09-26 21:56:59,581 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 210 [2018-09-26 21:56:59,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:56:59,582 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-09-26 21:56:59,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-26 21:56:59,582 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-09-26 21:56:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-26 21:56:59,583 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:56:59,583 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-09-26 21:56:59,583 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:56:59,583 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:56:59,584 INFO L82 PathProgramCache]: Analyzing trace with hash -781321964, now seen corresponding path program 52 times [2018-09-26 21:56:59,584 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:56:59,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:56:59,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:59,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:56:59,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:56:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:00,022 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:00,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:00,029 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:00,071 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:00,071 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:00,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:00,665 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:00,665 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-26 21:57:00,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-26 21:57:00,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-26 21:57:00,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:00,666 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 55 states. [2018-09-26 21:57:01,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:01,182 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-09-26 21:57:01,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-26 21:57:01,183 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-09-26 21:57:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:01,184 INFO L225 Difference]: With dead ends: 221 [2018-09-26 21:57:01,184 INFO L226 Difference]: Without dead ends: 219 [2018-09-26 21:57:01,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-26 21:57:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-26 21:57:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-26 21:57:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-09-26 21:57:01,186 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 214 [2018-09-26 21:57:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:01,186 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-09-26 21:57:01,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-26 21:57:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-09-26 21:57:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-26 21:57:01,187 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:01,187 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:01,187 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:01,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:01,188 INFO L82 PathProgramCache]: Analyzing trace with hash -348873538, now seen corresponding path program 53 times [2018-09-26 21:57:01,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:01,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:01,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:01,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:01,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:01,806 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:01,806 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 [2018-09-26 21:57:01,815 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:01,882 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-26 21:57:01,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:01,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:02,394 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:02,394 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-26 21:57:02,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-26 21:57:02,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-26 21:57:02,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:02,396 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 56 states. [2018-09-26 21:57:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:02,943 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-09-26 21:57:02,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-26 21:57:02,944 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-09-26 21:57:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:02,945 INFO L225 Difference]: With dead ends: 225 [2018-09-26 21:57:02,945 INFO L226 Difference]: Without dead ends: 223 [2018-09-26 21:57:02,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-26 21:57:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-26 21:57:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-26 21:57:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-09-26 21:57:02,947 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 218 [2018-09-26 21:57:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:02,948 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-09-26 21:57:02,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-26 21:57:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-09-26 21:57:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-26 21:57:02,949 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:02,949 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:02,949 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:02,949 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:02,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1269998744, now seen corresponding path program 54 times [2018-09-26 21:57:02,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:02,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:02,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:02,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:02,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:03,360 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:03,360 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 [2018-09-26 21:57:03,379 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:57:03,464 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-26 21:57:03,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:03,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:04,031 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:04,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-26 21:57:04,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-26 21:57:04,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-26 21:57:04,033 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:04,033 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 57 states. [2018-09-26 21:57:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:04,536 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-09-26 21:57:04,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-26 21:57:04,536 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-09-26 21:57:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:04,538 INFO L225 Difference]: With dead ends: 229 [2018-09-26 21:57:04,538 INFO L226 Difference]: Without dead ends: 227 [2018-09-26 21:57:04,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:04,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-26 21:57:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-26 21:57:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-26 21:57:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-09-26 21:57:04,541 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 222 [2018-09-26 21:57:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:04,541 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-09-26 21:57:04,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-26 21:57:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-09-26 21:57:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-26 21:57:04,542 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:04,543 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:04,543 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:04,543 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:04,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1338854126, now seen corresponding path program 55 times [2018-09-26 21:57:04,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:04,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:04,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:04,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:04,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:04,991 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:04,991 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 [2018-09-26 21:57:04,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:05,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:05,548 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:05,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-26 21:57:05,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-26 21:57:05,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-26 21:57:05,549 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:05,549 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 58 states. [2018-09-26 21:57:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:06,118 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-09-26 21:57:06,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-26 21:57:06,118 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-09-26 21:57:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:06,119 INFO L225 Difference]: With dead ends: 233 [2018-09-26 21:57:06,119 INFO L226 Difference]: Without dead ends: 231 [2018-09-26 21:57:06,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-26 21:57:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-26 21:57:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-26 21:57:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-09-26 21:57:06,123 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 226 [2018-09-26 21:57:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:06,123 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-09-26 21:57:06,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-26 21:57:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-09-26 21:57:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-26 21:57:06,125 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:06,125 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:06,125 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:06,126 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:06,126 INFO L82 PathProgramCache]: Analyzing trace with hash 555690428, now seen corresponding path program 56 times [2018-09-26 21:57:06,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:06,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:06,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:06,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:06,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:06,574 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:06,574 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:06,582 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:06,632 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:06,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:06,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:07,243 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:07,243 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-26 21:57:07,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-26 21:57:07,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-26 21:57:07,244 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:07,244 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 59 states. [2018-09-26 21:57:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:07,810 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-09-26 21:57:07,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-26 21:57:07,810 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-09-26 21:57:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:07,811 INFO L225 Difference]: With dead ends: 237 [2018-09-26 21:57:07,812 INFO L226 Difference]: Without dead ends: 235 [2018-09-26 21:57:07,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-26 21:57:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-26 21:57:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-26 21:57:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-09-26 21:57:07,814 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 230 [2018-09-26 21:57:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:07,814 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-09-26 21:57:07,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-26 21:57:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-09-26 21:57:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-26 21:57:07,815 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:07,815 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:07,815 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:07,816 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:07,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1475528346, now seen corresponding path program 57 times [2018-09-26 21:57:07,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:07,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:07,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:07,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:07,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:08,213 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:08,213 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 [2018-09-26 21:57:08,221 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:57:08,297 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-26 21:57:08,297 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:08,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:08,999 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:09,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-26 21:57:09,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-26 21:57:09,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-26 21:57:09,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:09,001 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 60 states. [2018-09-26 21:57:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:09,491 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-09-26 21:57:09,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-26 21:57:09,492 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-09-26 21:57:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:09,493 INFO L225 Difference]: With dead ends: 241 [2018-09-26 21:57:09,493 INFO L226 Difference]: Without dead ends: 239 [2018-09-26 21:57:09,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:09,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-26 21:57:09,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-26 21:57:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-26 21:57:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-09-26 21:57:09,497 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 234 [2018-09-26 21:57:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:09,497 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-09-26 21:57:09,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-26 21:57:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-09-26 21:57:09,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-26 21:57:09,498 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:09,498 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:09,498 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:09,498 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:09,498 INFO L82 PathProgramCache]: Analyzing trace with hash -457743344, now seen corresponding path program 58 times [2018-09-26 21:57:09,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:09,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:09,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:09,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:09,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:09,897 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:09,897 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 [2018-09-26 21:57:09,909 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:09,952 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:09,952 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:09,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:10,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:10,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-26 21:57:10,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-26 21:57:10,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-26 21:57:10,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:10,546 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 61 states. [2018-09-26 21:57:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:11,043 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-09-26 21:57:11,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-26 21:57:11,043 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-09-26 21:57:11,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:11,045 INFO L225 Difference]: With dead ends: 245 [2018-09-26 21:57:11,045 INFO L226 Difference]: Without dead ends: 243 [2018-09-26 21:57:11,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-26 21:57:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-26 21:57:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-26 21:57:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-09-26 21:57:11,047 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 238 [2018-09-26 21:57:11,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:11,048 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-09-26 21:57:11,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-26 21:57:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-09-26 21:57:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-26 21:57:11,049 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:11,049 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:11,049 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:11,049 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:11,049 INFO L82 PathProgramCache]: Analyzing trace with hash 362293690, now seen corresponding path program 59 times [2018-09-26 21:57:11,049 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:11,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:11,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:11,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:11,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:11,494 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:11,494 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 [2018-09-26 21:57:11,501 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:11,586 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-26 21:57:11,586 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:11,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:12,123 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:12,123 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-26 21:57:12,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-26 21:57:12,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-26 21:57:12,124 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:12,124 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 62 states. [2018-09-26 21:57:12,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:12,718 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-09-26 21:57:12,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-26 21:57:12,718 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-09-26 21:57:12,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:12,719 INFO L225 Difference]: With dead ends: 249 [2018-09-26 21:57:12,719 INFO L226 Difference]: Without dead ends: 247 [2018-09-26 21:57:12,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-26 21:57:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-26 21:57:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-26 21:57:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-09-26 21:57:12,722 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 242 [2018-09-26 21:57:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:12,722 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-09-26 21:57:12,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-26 21:57:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-09-26 21:57:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-26 21:57:12,724 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:12,724 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:12,724 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:12,724 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:12,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1209398684, now seen corresponding path program 60 times [2018-09-26 21:57:12,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:12,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:12,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:12,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:12,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:13,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:13,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:13,198 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:57:13,285 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-26 21:57:13,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:13,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:14,040 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:14,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-26 21:57:14,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-26 21:57:14,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-26 21:57:14,042 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:14,042 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 63 states. [2018-09-26 21:57:14,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:14,664 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-09-26 21:57:14,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-26 21:57:14,664 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-09-26 21:57:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:14,665 INFO L225 Difference]: With dead ends: 253 [2018-09-26 21:57:14,665 INFO L226 Difference]: Without dead ends: 251 [2018-09-26 21:57:14,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-26 21:57:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-26 21:57:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-26 21:57:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-09-26 21:57:14,668 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 246 [2018-09-26 21:57:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:14,668 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-09-26 21:57:14,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-26 21:57:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-09-26 21:57:14,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-26 21:57:14,669 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:14,669 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:14,669 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:14,669 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:14,670 INFO L82 PathProgramCache]: Analyzing trace with hash 665290254, now seen corresponding path program 61 times [2018-09-26 21:57:14,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:14,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:14,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:14,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:14,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:15,176 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:15,176 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 [2018-09-26 21:57:15,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:15,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:15,803 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:15,803 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-26 21:57:15,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-26 21:57:15,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-26 21:57:15,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:15,804 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 64 states. [2018-09-26 21:57:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:16,401 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-09-26 21:57:16,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-26 21:57:16,402 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-09-26 21:57:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:16,403 INFO L225 Difference]: With dead ends: 257 [2018-09-26 21:57:16,403 INFO L226 Difference]: Without dead ends: 255 [2018-09-26 21:57:16,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-26 21:57:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-26 21:57:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-26 21:57:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-09-26 21:57:16,406 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 250 [2018-09-26 21:57:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:16,406 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-09-26 21:57:16,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-26 21:57:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-09-26 21:57:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-26 21:57:16,407 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:16,407 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:16,407 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:16,407 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:16,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1066081464, now seen corresponding path program 62 times [2018-09-26 21:57:16,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:16,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:16,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:16,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:16,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:16,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:16,909 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:16,926 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:16,975 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:16,976 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:16,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:17,559 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:17,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-26 21:57:17,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-26 21:57:17,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-26 21:57:17,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:17,561 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 65 states. [2018-09-26 21:57:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:18,101 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-09-26 21:57:18,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-26 21:57:18,101 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-09-26 21:57:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:18,102 INFO L225 Difference]: With dead ends: 261 [2018-09-26 21:57:18,102 INFO L226 Difference]: Without dead ends: 259 [2018-09-26 21:57:18,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:18,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-26 21:57:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-09-26 21:57:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-26 21:57:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-09-26 21:57:18,106 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 254 [2018-09-26 21:57:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:18,106 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-09-26 21:57:18,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-26 21:57:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-09-26 21:57:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-26 21:57:18,107 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:18,108 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:18,108 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:18,108 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:18,108 INFO L82 PathProgramCache]: Analyzing trace with hash -116437406, now seen corresponding path program 63 times [2018-09-26 21:57:18,108 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:18,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:18,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:18,109 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:18,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:18,737 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:18,737 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 [2018-09-26 21:57:18,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:57:18,843 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-26 21:57:18,843 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:18,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:19,554 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:19,554 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-26 21:57:19,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-26 21:57:19,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-26 21:57:19,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:19,555 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 66 states. [2018-09-26 21:57:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:20,107 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-09-26 21:57:20,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-26 21:57:20,108 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-09-26 21:57:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:20,109 INFO L225 Difference]: With dead ends: 265 [2018-09-26 21:57:20,109 INFO L226 Difference]: Without dead ends: 263 [2018-09-26 21:57:20,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-26 21:57:20,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-09-26 21:57:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-09-26 21:57:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-09-26 21:57:20,113 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 258 [2018-09-26 21:57:20,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:20,113 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-09-26 21:57:20,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-26 21:57:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-09-26 21:57:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-26 21:57:20,114 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:20,115 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:20,115 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:20,115 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:20,115 INFO L82 PathProgramCache]: Analyzing trace with hash 208575244, now seen corresponding path program 64 times [2018-09-26 21:57:20,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:20,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:20,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:20,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:20,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:20,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:20,687 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 [2018-09-26 21:57:20,695 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:20,747 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:20,747 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:20,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:21,366 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:21,366 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-26 21:57:21,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-26 21:57:21,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-26 21:57:21,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:21,368 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 67 states. [2018-09-26 21:57:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:21,984 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-09-26 21:57:21,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-26 21:57:21,985 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-09-26 21:57:21,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:21,986 INFO L225 Difference]: With dead ends: 269 [2018-09-26 21:57:21,986 INFO L226 Difference]: Without dead ends: 267 [2018-09-26 21:57:21,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:21,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-26 21:57:21,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-09-26 21:57:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-09-26 21:57:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-09-26 21:57:21,990 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 262 [2018-09-26 21:57:21,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:21,990 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-09-26 21:57:21,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-26 21:57:21,990 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-09-26 21:57:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-26 21:57:21,991 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:21,992 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:21,992 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:21,992 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:21,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1868332362, now seen corresponding path program 65 times [2018-09-26 21:57:21,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:21,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:21,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:21,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:21,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:22,531 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:22,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:22,538 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:22,628 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-26 21:57:22,628 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:22,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:23,292 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:23,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-26 21:57:23,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-26 21:57:23,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-26 21:57:23,294 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:23,294 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 68 states. [2018-09-26 21:57:24,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:24,217 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-09-26 21:57:24,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-26 21:57:24,217 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-09-26 21:57:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:24,219 INFO L225 Difference]: With dead ends: 273 [2018-09-26 21:57:24,219 INFO L226 Difference]: Without dead ends: 271 [2018-09-26 21:57:24,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-09-26 21:57:24,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-09-26 21:57:24,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-09-26 21:57:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-09-26 21:57:24,222 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 266 [2018-09-26 21:57:24,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:24,222 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-09-26 21:57:24,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-26 21:57:24,222 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-09-26 21:57:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-26 21:57:24,223 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:24,224 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:24,224 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:24,224 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:24,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1687648928, now seen corresponding path program 66 times [2018-09-26 21:57:24,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:24,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:24,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:24,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:24,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:24,733 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:24,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:24,740 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:57:24,837 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-26 21:57:24,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:24,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:25,510 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:25,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-26 21:57:25,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-26 21:57:25,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-26 21:57:25,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:25,512 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 69 states. [2018-09-26 21:57:26,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:26,134 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-09-26 21:57:26,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-26 21:57:26,134 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-09-26 21:57:26,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:26,135 INFO L225 Difference]: With dead ends: 277 [2018-09-26 21:57:26,135 INFO L226 Difference]: Without dead ends: 275 [2018-09-26 21:57:26,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:26,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-09-26 21:57:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-09-26 21:57:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-09-26 21:57:26,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-09-26 21:57:26,138 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 270 [2018-09-26 21:57:26,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:26,138 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-09-26 21:57:26,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-26 21:57:26,139 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-09-26 21:57:26,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-26 21:57:26,140 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:26,140 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:26,141 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:26,141 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash -516414710, now seen corresponding path program 67 times [2018-09-26 21:57:26,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:26,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:26,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:26,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:26,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:26,646 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:26,646 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 [2018-09-26 21:57:26,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:26,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:27,363 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:27,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-26 21:57:27,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-26 21:57:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-26 21:57:27,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:27,364 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 70 states. [2018-09-26 21:57:28,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:28,050 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-09-26 21:57:28,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-26 21:57:28,050 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-09-26 21:57:28,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:28,051 INFO L225 Difference]: With dead ends: 281 [2018-09-26 21:57:28,051 INFO L226 Difference]: Without dead ends: 279 [2018-09-26 21:57:28,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-09-26 21:57:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-09-26 21:57:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-26 21:57:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-09-26 21:57:28,054 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 274 [2018-09-26 21:57:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:28,054 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-09-26 21:57:28,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-26 21:57:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-09-26 21:57:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-26 21:57:28,056 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:28,056 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:28,056 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:28,056 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:28,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1431100340, now seen corresponding path program 68 times [2018-09-26 21:57:28,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:28,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:28,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:28,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:28,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:28,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:28,572 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 [2018-09-26 21:57:28,579 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:28,630 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:28,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:28,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:29,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:29,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-26 21:57:29,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-26 21:57:29,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-26 21:57:29,421 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:29,421 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 71 states. [2018-09-26 21:57:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:30,119 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-09-26 21:57:30,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-26 21:57:30,120 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-09-26 21:57:30,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:30,121 INFO L225 Difference]: With dead ends: 285 [2018-09-26 21:57:30,121 INFO L226 Difference]: Without dead ends: 283 [2018-09-26 21:57:30,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:30,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-26 21:57:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-09-26 21:57:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-09-26 21:57:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-09-26 21:57:30,124 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 278 [2018-09-26 21:57:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:30,124 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-09-26 21:57:30,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-26 21:57:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-09-26 21:57:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-26 21:57:30,125 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:30,126 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:30,126 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:30,126 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:30,126 INFO L82 PathProgramCache]: Analyzing trace with hash -912183458, now seen corresponding path program 69 times [2018-09-26 21:57:30,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:30,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:30,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:30,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:30,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:30,662 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:30,662 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:30,668 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:57:30,777 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-26 21:57:30,777 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:30,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:31,694 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:31,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-26 21:57:31,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-26 21:57:31,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-26 21:57:31,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:31,695 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 72 states. [2018-09-26 21:57:32,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:32,370 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-09-26 21:57:32,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-26 21:57:32,370 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-09-26 21:57:32,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:32,371 INFO L225 Difference]: With dead ends: 289 [2018-09-26 21:57:32,371 INFO L226 Difference]: Without dead ends: 287 [2018-09-26 21:57:32,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-09-26 21:57:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-09-26 21:57:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-09-26 21:57:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-09-26 21:57:32,374 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 282 [2018-09-26 21:57:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:32,374 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-09-26 21:57:32,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-26 21:57:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-09-26 21:57:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-26 21:57:32,375 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:32,375 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:32,375 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:32,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:32,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1896899064, now seen corresponding path program 70 times [2018-09-26 21:57:32,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:32,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:32,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:32,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:32,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:32,890 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:32,890 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 [2018-09-26 21:57:32,897 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:32,947 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:32,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:32,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:33,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:33,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-26 21:57:33,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-26 21:57:33,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-26 21:57:33,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:33,640 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 73 states. [2018-09-26 21:57:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:34,502 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-09-26 21:57:34,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-26 21:57:34,502 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-09-26 21:57:34,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:34,503 INFO L225 Difference]: With dead ends: 293 [2018-09-26 21:57:34,503 INFO L226 Difference]: Without dead ends: 291 [2018-09-26 21:57:34,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-09-26 21:57:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-09-26 21:57:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-09-26 21:57:34,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-09-26 21:57:34,506 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 286 [2018-09-26 21:57:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:34,506 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-09-26 21:57:34,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-26 21:57:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-09-26 21:57:34,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-09-26 21:57:34,507 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:34,508 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:34,508 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:34,508 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:34,508 INFO L82 PathProgramCache]: Analyzing trace with hash 347252658, now seen corresponding path program 71 times [2018-09-26 21:57:34,508 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:34,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:34,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:34,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:34,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:35,044 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:35,044 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:35,052 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:35,153 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-26 21:57:35,153 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:35,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:35,891 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:35,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-26 21:57:35,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-26 21:57:35,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-26 21:57:35,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:35,894 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 74 states. [2018-09-26 21:57:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:36,594 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-09-26 21:57:36,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-26 21:57:36,594 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-09-26 21:57:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:36,595 INFO L225 Difference]: With dead ends: 297 [2018-09-26 21:57:36,596 INFO L226 Difference]: Without dead ends: 295 [2018-09-26 21:57:36,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-09-26 21:57:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-09-26 21:57:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-09-26 21:57:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-09-26 21:57:36,598 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 290 [2018-09-26 21:57:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:36,598 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-09-26 21:57:36,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-26 21:57:36,599 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-09-26 21:57:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-26 21:57:36,600 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:36,600 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:36,600 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:36,600 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1994077092, now seen corresponding path program 72 times [2018-09-26 21:57:36,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:36,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:36,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:36,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:36,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:37,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:37,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:37,260 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:57:37,368 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-26 21:57:37,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:37,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:38,198 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:38,198 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-26 21:57:38,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-26 21:57:38,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-26 21:57:38,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:38,200 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 75 states. [2018-09-26 21:57:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:38,991 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-09-26 21:57:38,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-26 21:57:38,991 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-09-26 21:57:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:38,992 INFO L225 Difference]: With dead ends: 301 [2018-09-26 21:57:38,993 INFO L226 Difference]: Without dead ends: 299 [2018-09-26 21:57:38,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-09-26 21:57:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-09-26 21:57:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-09-26 21:57:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-09-26 21:57:38,995 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 294 [2018-09-26 21:57:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:38,996 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-09-26 21:57:38,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-26 21:57:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-09-26 21:57:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-26 21:57:38,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:38,997 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:38,997 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:38,997 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:38,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2034273286, now seen corresponding path program 73 times [2018-09-26 21:57:38,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:38,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:38,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:38,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:38,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:39,743 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:39,743 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:39,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:39,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:40,591 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:40,591 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-26 21:57:40,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-26 21:57:40,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-26 21:57:40,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:40,593 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 76 states. [2018-09-26 21:57:41,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:41,429 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-09-26 21:57:41,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-26 21:57:41,429 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-09-26 21:57:41,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:41,430 INFO L225 Difference]: With dead ends: 305 [2018-09-26 21:57:41,430 INFO L226 Difference]: Without dead ends: 303 [2018-09-26 21:57:41,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:41,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-26 21:57:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-09-26 21:57:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-09-26 21:57:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-09-26 21:57:41,433 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 298 [2018-09-26 21:57:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:41,433 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-09-26 21:57:41,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-26 21:57:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-09-26 21:57:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-26 21:57:41,434 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:41,434 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:41,434 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:41,435 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:41,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1891657392, now seen corresponding path program 74 times [2018-09-26 21:57:41,435 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:41,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:41,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:41,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:41,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:42,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:42,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:42,045 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:42,104 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:42,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:42,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:42,917 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:42,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-26 21:57:42,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-26 21:57:42,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-26 21:57:42,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:42,919 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 77 states. [2018-09-26 21:57:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:43,706 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-09-26 21:57:43,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-26 21:57:43,706 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-09-26 21:57:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:43,708 INFO L225 Difference]: With dead ends: 309 [2018-09-26 21:57:43,708 INFO L226 Difference]: Without dead ends: 307 [2018-09-26 21:57:43,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-09-26 21:57:43,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-09-26 21:57:43,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-09-26 21:57:43,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-09-26 21:57:43,711 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 302 [2018-09-26 21:57:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:43,712 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-09-26 21:57:43,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-26 21:57:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-09-26 21:57:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-09-26 21:57:43,713 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:43,713 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:43,714 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:43,714 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:43,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1709253542, now seen corresponding path program 75 times [2018-09-26 21:57:43,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:43,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:43,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:43,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:43,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:44,329 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:44,329 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 [2018-09-26 21:57:44,336 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:57:44,476 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-09-26 21:57:44,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:44,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:45,351 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:45,351 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-26 21:57:45,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-26 21:57:45,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-26 21:57:45,353 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:45,353 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 78 states. [2018-09-26 21:57:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:46,329 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-09-26 21:57:46,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-26 21:57:46,329 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-09-26 21:57:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:46,330 INFO L225 Difference]: With dead ends: 313 [2018-09-26 21:57:46,330 INFO L226 Difference]: Without dead ends: 311 [2018-09-26 21:57:46,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-09-26 21:57:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-09-26 21:57:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-09-26 21:57:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-09-26 21:57:46,333 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 306 [2018-09-26 21:57:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:46,333 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-09-26 21:57:46,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-26 21:57:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-09-26 21:57:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-26 21:57:46,335 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:46,335 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:46,335 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:46,335 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:46,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1586916612, now seen corresponding path program 76 times [2018-09-26 21:57:46,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:46,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:46,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:46,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:46,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:46,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:46,978 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 [2018-09-26 21:57:46,984 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:47,049 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:47,049 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:47,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:47,844 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:47,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-26 21:57:47,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-26 21:57:47,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-26 21:57:47,845 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:47,846 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 79 states. [2018-09-26 21:57:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:48,680 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-09-26 21:57:48,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-26 21:57:48,680 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-09-26 21:57:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:48,681 INFO L225 Difference]: With dead ends: 317 [2018-09-26 21:57:48,681 INFO L226 Difference]: Without dead ends: 315 [2018-09-26 21:57:48,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-09-26 21:57:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-09-26 21:57:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-09-26 21:57:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-09-26 21:57:48,685 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 310 [2018-09-26 21:57:48,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:48,685 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-09-26 21:57:48,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-26 21:57:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-09-26 21:57:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-09-26 21:57:48,687 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:48,687 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:48,687 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:48,687 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:48,688 INFO L82 PathProgramCache]: Analyzing trace with hash 102865070, now seen corresponding path program 77 times [2018-09-26 21:57:48,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:48,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:48,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:48,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:48,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:49,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:49,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:49,349 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:49,472 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-09-26 21:57:49,473 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:49,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:50,402 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:50,402 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-26 21:57:50,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-26 21:57:50,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-26 21:57:50,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:50,404 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 80 states. [2018-09-26 21:57:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:51,296 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-09-26 21:57:51,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-26 21:57:51,296 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-09-26 21:57:51,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:51,297 INFO L225 Difference]: With dead ends: 321 [2018-09-26 21:57:51,297 INFO L226 Difference]: Without dead ends: 319 [2018-09-26 21:57:51,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:51,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-09-26 21:57:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-09-26 21:57:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-09-26 21:57:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-09-26 21:57:51,300 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 314 [2018-09-26 21:57:51,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:51,300 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-09-26 21:57:51,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-26 21:57:51,300 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-09-26 21:57:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-26 21:57:51,301 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:51,302 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:51,302 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:51,302 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:51,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670360, now seen corresponding path program 78 times [2018-09-26 21:57:51,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:51,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:51,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:51,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:51,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:51,950 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:51,950 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 [2018-09-26 21:57:51,957 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:57:52,075 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-09-26 21:57:52,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:52,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:52,895 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:52,895 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-26 21:57:52,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-26 21:57:52,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-26 21:57:52,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:52,897 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 81 states. [2018-09-26 21:57:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:53,800 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-09-26 21:57:53,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-26 21:57:53,800 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-09-26 21:57:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:53,801 INFO L225 Difference]: With dead ends: 325 [2018-09-26 21:57:53,801 INFO L226 Difference]: Without dead ends: 323 [2018-09-26 21:57:53,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-09-26 21:57:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-09-26 21:57:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-09-26 21:57:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-09-26 21:57:53,804 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 318 [2018-09-26 21:57:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:53,804 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-09-26 21:57:53,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-26 21:57:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-09-26 21:57:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-26 21:57:53,805 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:53,806 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:53,806 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:53,806 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:53,806 INFO L82 PathProgramCache]: Analyzing trace with hash 941408514, now seen corresponding path program 79 times [2018-09-26 21:57:53,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:53,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:53,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:53,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:53,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:54,471 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:54,472 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 [2018-09-26 21:57:54,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:54,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:55,569 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:55,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-26 21:57:55,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-26 21:57:55,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-26 21:57:55,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:55,571 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 82 states. [2018-09-26 21:57:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:56,480 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-09-26 21:57:56,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-26 21:57:56,480 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-09-26 21:57:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:56,481 INFO L225 Difference]: With dead ends: 329 [2018-09-26 21:57:56,482 INFO L226 Difference]: Without dead ends: 327 [2018-09-26 21:57:56,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-09-26 21:57:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-09-26 21:57:56,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-09-26 21:57:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-09-26 21:57:56,484 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 322 [2018-09-26 21:57:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:56,484 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-09-26 21:57:56,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-26 21:57:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-09-26 21:57:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-09-26 21:57:56,486 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:56,486 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:56,486 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:56,486 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:56,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1279376812, now seen corresponding path program 80 times [2018-09-26 21:57:56,486 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:56,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:56,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:56,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:56,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:57,185 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:57,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:57:57,192 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:57,254 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:57,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:57,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:58,137 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:58,137 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-26 21:57:58,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-26 21:57:58,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-26 21:57:58,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:58,139 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 83 states. [2018-09-26 21:57:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:59,241 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-09-26 21:57:59,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-26 21:57:59,241 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-09-26 21:57:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:59,242 INFO L225 Difference]: With dead ends: 333 [2018-09-26 21:57:59,242 INFO L226 Difference]: Without dead ends: 331 [2018-09-26 21:57:59,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-09-26 21:57:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-09-26 21:57:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-09-26 21:57:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-09-26 21:57:59,245 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 326 [2018-09-26 21:57:59,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:59,245 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-09-26 21:57:59,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-26 21:57:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-09-26 21:57:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-26 21:57:59,247 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:59,247 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1] [2018-09-26 21:57:59,247 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:59,247 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:59,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1763420842, now seen corresponding path program 81 times [2018-09-26 21:57:59,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:59,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:59,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:59,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:59,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:00,002 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:00,002 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 [2018-09-26 21:58:00,009 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:00,149 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-09-26 21:58:00,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:00,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:01,016 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:01,016 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-26 21:58:01,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-26 21:58:01,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-26 21:58:01,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:01,018 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 84 states. [2018-09-26 21:58:03,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:03,085 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-09-26 21:58:03,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-26 21:58:03,085 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-09-26 21:58:03,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:03,087 INFO L225 Difference]: With dead ends: 337 [2018-09-26 21:58:03,087 INFO L226 Difference]: Without dead ends: 335 [2018-09-26 21:58:03,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-09-26 21:58:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-09-26 21:58:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-09-26 21:58:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-09-26 21:58:03,089 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 330 [2018-09-26 21:58:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:03,090 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-09-26 21:58:03,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-26 21:58:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-09-26 21:58:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-09-26 21:58:03,091 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:03,091 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:03,091 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:03,091 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:03,092 INFO L82 PathProgramCache]: Analyzing trace with hash 431949824, now seen corresponding path program 82 times [2018-09-26 21:58:03,092 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:03,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:03,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:03,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:03,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:03,955 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:03,955 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 [2018-09-26 21:58:03,963 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:04,027 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:04,027 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:04,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:05,053 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:05,053 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-26 21:58:05,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-26 21:58:05,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-26 21:58:05,055 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:05,055 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 85 states. [2018-09-26 21:58:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:06,100 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-09-26 21:58:06,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-26 21:58:06,100 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-09-26 21:58:06,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:06,102 INFO L225 Difference]: With dead ends: 341 [2018-09-26 21:58:06,102 INFO L226 Difference]: Without dead ends: 339 [2018-09-26 21:58:06,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-09-26 21:58:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-09-26 21:58:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-09-26 21:58:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-09-26 21:58:06,105 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 334 [2018-09-26 21:58:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:06,105 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-09-26 21:58:06,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-26 21:58:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-09-26 21:58:06,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-26 21:58:06,106 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:06,106 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:06,106 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:06,107 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1967936938, now seen corresponding path program 83 times [2018-09-26 21:58:06,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:06,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:06,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:06,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:06,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:06,810 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:06,810 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 [2018-09-26 21:58:06,819 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:06,947 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-09-26 21:58:06,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:06,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:07,826 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:07,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-26 21:58:07,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-26 21:58:07,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-26 21:58:07,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:07,828 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 86 states. [2018-09-26 21:58:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:08,810 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-09-26 21:58:08,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-26 21:58:08,810 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-09-26 21:58:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:08,811 INFO L225 Difference]: With dead ends: 345 [2018-09-26 21:58:08,811 INFO L226 Difference]: Without dead ends: 343 [2018-09-26 21:58:08,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-09-26 21:58:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-09-26 21:58:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-09-26 21:58:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-09-26 21:58:08,816 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 338 [2018-09-26 21:58:08,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:08,816 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-09-26 21:58:08,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-26 21:58:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-09-26 21:58:08,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-26 21:58:08,818 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:08,818 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:08,819 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:08,819 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:08,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2000241068, now seen corresponding path program 84 times [2018-09-26 21:58:08,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:08,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:08,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:08,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:08,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:09,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:09,557 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:58:09,570 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:09,701 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-09-26 21:58:09,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:09,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:10,713 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:10,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-26 21:58:10,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-26 21:58:10,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-26 21:58:10,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:10,716 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 87 states. [2018-09-26 21:58:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:11,852 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-09-26 21:58:11,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-26 21:58:11,852 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-09-26 21:58:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:11,854 INFO L225 Difference]: With dead ends: 349 [2018-09-26 21:58:11,854 INFO L226 Difference]: Without dead ends: 347 [2018-09-26 21:58:11,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-09-26 21:58:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-09-26 21:58:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-09-26 21:58:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-09-26 21:58:11,857 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 342 [2018-09-26 21:58:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:11,858 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-09-26 21:58:11,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-26 21:58:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-09-26 21:58:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-09-26 21:58:11,859 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:11,860 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:11,860 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:11,860 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:11,860 INFO L82 PathProgramCache]: Analyzing trace with hash 304660990, now seen corresponding path program 85 times [2018-09-26 21:58:11,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:11,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:11,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:11,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:11,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:12,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:12,626 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 [2018-09-26 21:58:12,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:12,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:13,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:13,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-26 21:58:13,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-26 21:58:13,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-26 21:58:13,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:13,642 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 88 states. [2018-09-26 21:58:14,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:14,871 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-09-26 21:58:14,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-26 21:58:14,872 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-09-26 21:58:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:14,873 INFO L225 Difference]: With dead ends: 353 [2018-09-26 21:58:14,873 INFO L226 Difference]: Without dead ends: 351 [2018-09-26 21:58:14,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-09-26 21:58:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-09-26 21:58:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-09-26 21:58:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-09-26 21:58:14,876 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 346 [2018-09-26 21:58:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:14,876 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-09-26 21:58:14,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-26 21:58:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-09-26 21:58:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-26 21:58:14,878 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:14,878 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:14,878 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:14,878 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:14,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1311563944, now seen corresponding path program 86 times [2018-09-26 21:58:14,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:14,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:14,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:14,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:14,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:15,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:15,780 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 [2018-09-26 21:58:15,787 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:15,853 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:15,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:15,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:16,811 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:16,812 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-26 21:58:16,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-26 21:58:16,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-26 21:58:16,813 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:16,814 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 89 states. [2018-09-26 21:58:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:18,072 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-09-26 21:58:18,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-26 21:58:18,072 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-09-26 21:58:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:18,074 INFO L225 Difference]: With dead ends: 357 [2018-09-26 21:58:18,074 INFO L226 Difference]: Without dead ends: 355 [2018-09-26 21:58:18,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:18,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-09-26 21:58:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-09-26 21:58:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-09-26 21:58:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-09-26 21:58:18,079 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 350 [2018-09-26 21:58:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:18,079 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-09-26 21:58:18,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-26 21:58:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-09-26 21:58:18,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-26 21:58:18,081 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:18,081 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:18,081 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:18,082 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:18,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744686, now seen corresponding path program 87 times [2018-09-26 21:58:18,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:18,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:18,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:18,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:18,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:18,883 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:18,883 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 [2018-09-26 21:58:18,891 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:19,033 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-09-26 21:58:19,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:19,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:20,012 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:20,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-26 21:58:20,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-26 21:58:20,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-26 21:58:20,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:20,014 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 90 states. [2018-09-26 21:58:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:21,170 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-09-26 21:58:21,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-26 21:58:21,170 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-09-26 21:58:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:21,171 INFO L225 Difference]: With dead ends: 361 [2018-09-26 21:58:21,171 INFO L226 Difference]: Without dead ends: 359 [2018-09-26 21:58:21,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:21,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-09-26 21:58:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-09-26 21:58:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-09-26 21:58:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-09-26 21:58:21,174 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 354 [2018-09-26 21:58:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:21,175 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-09-26 21:58:21,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-26 21:58:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-09-26 21:58:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-26 21:58:21,176 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:21,176 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:21,176 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:21,176 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash 180711164, now seen corresponding path program 88 times [2018-09-26 21:58:21,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:21,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:21,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:21,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:21,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:21,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:21,987 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:58:21,995 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:22,077 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:22,078 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:22,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:23,129 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:23,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-26 21:58:23,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-26 21:58:23,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-26 21:58:23,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:23,131 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 91 states. [2018-09-26 21:58:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:24,374 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-09-26 21:58:24,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-26 21:58:24,374 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-09-26 21:58:24,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:24,376 INFO L225 Difference]: With dead ends: 365 [2018-09-26 21:58:24,376 INFO L226 Difference]: Without dead ends: 363 [2018-09-26 21:58:24,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:24,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-09-26 21:58:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-09-26 21:58:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-09-26 21:58:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-09-26 21:58:24,379 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 358 [2018-09-26 21:58:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:24,379 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-09-26 21:58:24,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-26 21:58:24,379 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-09-26 21:58:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-26 21:58:24,380 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:24,380 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:24,381 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:24,381 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:24,381 INFO L82 PathProgramCache]: Analyzing trace with hash 512679590, now seen corresponding path program 89 times [2018-09-26 21:58:24,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:24,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:24,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:24,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:24,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:25,176 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:25,176 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 [2018-09-26 21:58:25,185 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:25,337 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-09-26 21:58:25,337 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:25,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:26,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:26,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-26 21:58:26,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-26 21:58:26,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-26 21:58:26,433 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:26,433 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 92 states. [2018-09-26 21:58:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:27,814 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-09-26 21:58:27,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-26 21:58:27,814 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-09-26 21:58:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:27,816 INFO L225 Difference]: With dead ends: 369 [2018-09-26 21:58:27,816 INFO L226 Difference]: Without dead ends: 367 [2018-09-26 21:58:27,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-09-26 21:58:27,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-09-26 21:58:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-09-26 21:58:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-09-26 21:58:27,819 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 362 [2018-09-26 21:58:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:27,819 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-09-26 21:58:27,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-26 21:58:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-09-26 21:58:27,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-09-26 21:58:27,820 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:27,821 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:27,821 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:27,821 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:27,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1264871760, now seen corresponding path program 90 times [2018-09-26 21:58:27,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:27,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:27,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:27,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:27,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:28,651 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:28,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:58:28,659 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:28,845 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-09-26 21:58:28,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:28,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:29,839 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:29,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-26 21:58:29,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-26 21:58:29,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-26 21:58:29,842 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:29,842 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 93 states. [2018-09-26 21:58:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:30,958 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-09-26 21:58:30,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-26 21:58:30,959 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-09-26 21:58:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:30,960 INFO L225 Difference]: With dead ends: 373 [2018-09-26 21:58:30,960 INFO L226 Difference]: Without dead ends: 371 [2018-09-26 21:58:30,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:30,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-09-26 21:58:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-09-26 21:58:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-09-26 21:58:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-09-26 21:58:30,963 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 366 [2018-09-26 21:58:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:30,963 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-09-26 21:58:30,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-26 21:58:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-09-26 21:58:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-26 21:58:30,965 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:30,965 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:30,965 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:30,965 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:30,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1480552710, now seen corresponding path program 91 times [2018-09-26 21:58:30,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:30,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:30,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:30,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:30,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:31,806 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:31,806 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 [2018-09-26 21:58:31,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:31,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:32,922 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:32,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-26 21:58:32,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-26 21:58:32,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-26 21:58:32,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:32,924 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 94 states. [2018-09-26 21:58:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:34,411 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-09-26 21:58:34,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-26 21:58:34,411 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-09-26 21:58:34,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:34,413 INFO L225 Difference]: With dead ends: 377 [2018-09-26 21:58:34,413 INFO L226 Difference]: Without dead ends: 375 [2018-09-26 21:58:34,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-09-26 21:58:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-09-26 21:58:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-09-26 21:58:34,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-09-26 21:58:34,416 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 370 [2018-09-26 21:58:34,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:34,416 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-09-26 21:58:34,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-26 21:58:34,416 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-09-26 21:58:34,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-09-26 21:58:34,418 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:34,418 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:34,418 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:34,418 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:34,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1998729308, now seen corresponding path program 92 times [2018-09-26 21:58:34,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:34,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:34,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:34,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:34,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:35,320 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:35,320 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 [2018-09-26 21:58:35,328 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:35,400 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:35,401 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:35,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:36,589 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:36,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-26 21:58:36,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-26 21:58:36,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-26 21:58:36,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:36,591 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 95 states. [2018-09-26 21:58:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:38,097 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-09-26 21:58:38,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-26 21:58:38,097 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-09-26 21:58:38,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:38,099 INFO L225 Difference]: With dead ends: 381 [2018-09-26 21:58:38,099 INFO L226 Difference]: Without dead ends: 379 [2018-09-26 21:58:38,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-09-26 21:58:38,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-09-26 21:58:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-09-26 21:58:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-09-26 21:58:38,103 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 374 [2018-09-26 21:58:38,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:38,103 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-09-26 21:58:38,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-26 21:58:38,103 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-09-26 21:58:38,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-26 21:58:38,104 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:38,104 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:38,105 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:38,105 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:38,105 INFO L82 PathProgramCache]: Analyzing trace with hash 582396750, now seen corresponding path program 93 times [2018-09-26 21:58:38,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:38,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:38,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:38,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:38,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:38,982 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:38,982 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 [2018-09-26 21:58:38,989 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:39,147 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-09-26 21:58:39,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:39,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:40,188 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:40,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-26 21:58:40,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-26 21:58:40,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-26 21:58:40,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:40,190 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 96 states. [2018-09-26 21:58:41,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:41,603 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-09-26 21:58:41,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-26 21:58:41,603 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-09-26 21:58:41,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:41,604 INFO L225 Difference]: With dead ends: 385 [2018-09-26 21:58:41,604 INFO L226 Difference]: Without dead ends: 383 [2018-09-26 21:58:41,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-09-26 21:58:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-09-26 21:58:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-09-26 21:58:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-09-26 21:58:41,607 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 378 [2018-09-26 21:58:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:41,608 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-09-26 21:58:41,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-26 21:58:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-09-26 21:58:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-09-26 21:58:41,609 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:41,609 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:41,610 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:41,610 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:41,610 INFO L82 PathProgramCache]: Analyzing trace with hash 671457784, now seen corresponding path program 94 times [2018-09-26 21:58:41,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:41,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:41,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:41,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:41,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:42,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:42,549 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 [2018-09-26 21:58:42,555 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:42,631 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:42,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:42,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:43,785 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:43,785 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-26 21:58:43,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-26 21:58:43,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-26 21:58:43,787 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:43,787 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 97 states. [2018-09-26 21:58:45,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:45,122 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-09-26 21:58:45,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-26 21:58:45,122 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-09-26 21:58:45,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:45,124 INFO L225 Difference]: With dead ends: 389 [2018-09-26 21:58:45,124 INFO L226 Difference]: Without dead ends: 387 [2018-09-26 21:58:45,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-09-26 21:58:45,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-09-26 21:58:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-09-26 21:58:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-09-26 21:58:45,127 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 382 [2018-09-26 21:58:45,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:45,127 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-09-26 21:58:45,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-26 21:58:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-09-26 21:58:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-09-26 21:58:45,129 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:45,129 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:45,129 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:45,129 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:45,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1782920098, now seen corresponding path program 95 times [2018-09-26 21:58:45,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:45,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:45,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:45,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:45,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:46,038 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:46,038 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:58:46,046 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:46,233 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-09-26 21:58:46,234 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:46,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:47,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:47,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-26 21:58:47,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-26 21:58:47,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-26 21:58:47,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:47,355 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 98 states. [2018-09-26 21:58:48,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:48,871 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-09-26 21:58:48,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-26 21:58:48,871 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-09-26 21:58:48,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:48,873 INFO L225 Difference]: With dead ends: 393 [2018-09-26 21:58:48,873 INFO L226 Difference]: Without dead ends: 391 [2018-09-26 21:58:48,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-09-26 21:58:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-09-26 21:58:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-09-26 21:58:48,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-09-26 21:58:48,876 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 386 [2018-09-26 21:58:48,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:48,876 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-09-26 21:58:48,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-26 21:58:48,876 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-09-26 21:58:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-26 21:58:48,878 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:48,878 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:48,878 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:48,878 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:48,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2041569356, now seen corresponding path program 96 times [2018-09-26 21:58:48,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:48,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:48,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:48,879 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:48,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:49,825 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:49,825 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 [2018-09-26 21:58:49,832 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:49,986 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-09-26 21:58:49,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:49,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:51,145 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:51,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-26 21:58:51,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-26 21:58:51,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-26 21:58:51,148 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:51,148 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 99 states. [2018-09-26 21:58:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:52,595 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-09-26 21:58:52,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-26 21:58:52,595 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-09-26 21:58:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:52,597 INFO L225 Difference]: With dead ends: 397 [2018-09-26 21:58:52,597 INFO L226 Difference]: Without dead ends: 395 [2018-09-26 21:58:52,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:52,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-09-26 21:58:52,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-09-26 21:58:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-09-26 21:58:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-09-26 21:58:52,600 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 390 [2018-09-26 21:58:52,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:52,600 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-09-26 21:58:52,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-26 21:58:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-09-26 21:58:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-09-26 21:58:52,602 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:52,602 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:52,602 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:52,602 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:52,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1161832438, now seen corresponding path program 97 times [2018-09-26 21:58:52,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:52,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:52,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:52,603 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:52,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:53,576 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:53,576 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 [2018-09-26 21:58:53,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:53,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:54,836 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:54,836 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-26 21:58:54,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-26 21:58:54,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-26 21:58:54,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:54,838 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 100 states. [2018-09-26 21:58:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:56,457 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-09-26 21:58:56,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-26 21:58:56,457 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-09-26 21:58:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:56,459 INFO L225 Difference]: With dead ends: 401 [2018-09-26 21:58:56,459 INFO L226 Difference]: Without dead ends: 399 [2018-09-26 21:58:56,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:56,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-09-26 21:58:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-09-26 21:58:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-09-26 21:58:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-09-26 21:58:56,462 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 394 [2018-09-26 21:58:56,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:56,463 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-09-26 21:58:56,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-26 21:58:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-09-26 21:58:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-09-26 21:58:56,465 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:56,465 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1] [2018-09-26 21:58:56,465 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:56,465 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:56,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1162835296, now seen corresponding path program 98 times [2018-09-26 21:58:56,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:56,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:56,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:56,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:56,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:57,435 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:57,435 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 [2018-09-26 21:58:57,442 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:57,516 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:57,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:57,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:58,705 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:58,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-26 21:58:58,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-26 21:58:58,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-26 21:58:58,708 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:58,708 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 101 states. [2018-09-26 21:59:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:00,235 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-09-26 21:59:00,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-26 21:59:00,235 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-09-26 21:59:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:00,236 INFO L225 Difference]: With dead ends: 405 [2018-09-26 21:59:00,237 INFO L226 Difference]: Without dead ends: 403 [2018-09-26 21:59:00,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-09-26 21:59:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-09-26 21:59:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-09-26 21:59:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-09-26 21:59:00,240 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 398 [2018-09-26 21:59:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:00,240 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-09-26 21:59:00,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-26 21:59:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-09-26 21:59:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-09-26 21:59:00,242 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:00,242 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:00,243 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:00,243 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:00,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1719371850, now seen corresponding path program 99 times [2018-09-26 21:59:00,243 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:00,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:00,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:00,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:00,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:01,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:01,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:59:01,265 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:59:01,483 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-09-26 21:59:01,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:01,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:02,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:02,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-26 21:59:02,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-26 21:59:02,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-26 21:59:02,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:02,687 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 102 states. [2018-09-26 21:59:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:04,297 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-09-26 21:59:04,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-26 21:59:04,297 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-09-26 21:59:04,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:04,298 INFO L225 Difference]: With dead ends: 409 [2018-09-26 21:59:04,298 INFO L226 Difference]: Without dead ends: 407 [2018-09-26 21:59:04,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:04,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-09-26 21:59:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-09-26 21:59:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-09-26 21:59:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-09-26 21:59:04,303 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 402 [2018-09-26 21:59:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:04,303 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-09-26 21:59:04,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-26 21:59:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-09-26 21:59:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-26 21:59:04,306 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:04,306 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:04,306 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:04,306 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash 333160692, now seen corresponding path program 100 times [2018-09-26 21:59:04,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:04,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:04,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:04,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:04,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:05,405 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:05,405 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 [2018-09-26 21:59:05,412 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:59:05,494 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:59:05,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:05,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:06,807 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:06,808 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-26 21:59:06,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-26 21:59:06,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-26 21:59:06,810 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:06,810 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 103 states. [2018-09-26 21:59:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:08,440 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-09-26 21:59:08,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-26 21:59:08,441 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-09-26 21:59:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:08,443 INFO L225 Difference]: With dead ends: 413 [2018-09-26 21:59:08,443 INFO L226 Difference]: Without dead ends: 411 [2018-09-26 21:59:08,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:08,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-09-26 21:59:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-09-26 21:59:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-09-26 21:59:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-09-26 21:59:08,447 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 406 [2018-09-26 21:59:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:08,448 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-09-26 21:59:08,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-26 21:59:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-09-26 21:59:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-09-26 21:59:08,450 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:08,450 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:08,450 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:08,450 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:08,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1825264798, now seen corresponding path program 101 times [2018-09-26 21:59:08,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:08,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:08,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:08,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:08,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:09,528 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:09,529 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:09,529 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 [2018-09-26 21:59:09,536 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:59:09,731 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-09-26 21:59:09,731 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:09,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:11,047 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:11,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-26 21:59:11,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-26 21:59:11,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-26 21:59:11,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:11,050 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 104 states. [2018-09-26 21:59:12,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:12,845 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-09-26 21:59:12,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-26 21:59:12,845 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-09-26 21:59:12,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:12,846 INFO L225 Difference]: With dead ends: 417 [2018-09-26 21:59:12,846 INFO L226 Difference]: Without dead ends: 415 [2018-09-26 21:59:12,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-09-26 21:59:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-09-26 21:59:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-09-26 21:59:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-09-26 21:59:12,851 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 410 [2018-09-26 21:59:12,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:12,851 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-09-26 21:59:12,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-26 21:59:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-09-26 21:59:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-26 21:59:12,853 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:12,853 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:12,854 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:12,854 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:12,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1710939320, now seen corresponding path program 102 times [2018-09-26 21:59:12,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:12,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:12,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:12,855 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:12,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:13,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:13,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:59:13,934 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:59:14,103 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-09-26 21:59:14,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:14,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:15,351 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:15,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-26 21:59:15,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-26 21:59:15,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-26 21:59:15,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:15,354 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 105 states. [2018-09-26 21:59:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:17,075 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-09-26 21:59:17,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-26 21:59:17,076 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-09-26 21:59:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:17,077 INFO L225 Difference]: With dead ends: 421 [2018-09-26 21:59:17,077 INFO L226 Difference]: Without dead ends: 419 [2018-09-26 21:59:17,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-09-26 21:59:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-09-26 21:59:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-09-26 21:59:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-09-26 21:59:17,079 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 414 [2018-09-26 21:59:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:17,080 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-09-26 21:59:17,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-26 21:59:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-09-26 21:59:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-09-26 21:59:17,081 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:17,081 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:17,082 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:17,082 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:17,082 INFO L82 PathProgramCache]: Analyzing trace with hash -486306574, now seen corresponding path program 103 times [2018-09-26 21:59:17,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:17,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:17,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:17,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:17,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:18,136 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:18,136 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 [2018-09-26 21:59:18,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:18,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:19,490 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:19,491 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-26 21:59:19,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-26 21:59:19,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-26 21:59:19,493 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:19,493 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 106 states. [2018-09-26 21:59:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:21,424 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-09-26 21:59:21,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-26 21:59:21,424 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-09-26 21:59:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:21,425 INFO L225 Difference]: With dead ends: 425 [2018-09-26 21:59:21,425 INFO L226 Difference]: Without dead ends: 423 [2018-09-26 21:59:21,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-09-26 21:59:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-09-26 21:59:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-09-26 21:59:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-09-26 21:59:21,429 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 418 [2018-09-26 21:59:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:21,429 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-09-26 21:59:21,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-26 21:59:21,429 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-09-26 21:59:21,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-09-26 21:59:21,431 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:21,432 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:21,432 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:21,432 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:21,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1308692892, now seen corresponding path program 104 times [2018-09-26 21:59:21,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:21,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:21,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:21,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:21,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:22,764 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:22,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:59:22,771 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:59:22,853 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:59:22,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:22,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:24,166 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:24,167 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-26 21:59:24,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-26 21:59:24,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-26 21:59:24,170 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:24,170 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 107 states. [2018-09-26 21:59:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:26,018 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-09-26 21:59:26,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-26 21:59:26,018 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-09-26 21:59:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:26,019 INFO L225 Difference]: With dead ends: 429 [2018-09-26 21:59:26,019 INFO L226 Difference]: Without dead ends: 427 [2018-09-26 21:59:26,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-09-26 21:59:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-09-26 21:59:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-09-26 21:59:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-09-26 21:59:26,022 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 422 [2018-09-26 21:59:26,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:26,022 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-09-26 21:59:26,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-26 21:59:26,022 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-09-26 21:59:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-26 21:59:26,023 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:26,023 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:26,024 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:26,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:26,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1073230150, now seen corresponding path program 105 times [2018-09-26 21:59:26,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:26,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:26,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:26,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:26,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:27,108 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:27,108 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 [2018-09-26 21:59:27,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:59:27,307 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-09-26 21:59:27,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:27,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:28,641 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:28,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-26 21:59:28,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-26 21:59:28,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-26 21:59:28,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:28,644 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 108 states. [2018-09-26 21:59:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:30,445 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-09-26 21:59:30,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-26 21:59:30,445 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-09-26 21:59:30,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:30,446 INFO L225 Difference]: With dead ends: 433 [2018-09-26 21:59:30,446 INFO L226 Difference]: Without dead ends: 431 [2018-09-26 21:59:30,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:30,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-09-26 21:59:30,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-09-26 21:59:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-09-26 21:59:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-09-26 21:59:30,449 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 426 [2018-09-26 21:59:30,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:30,450 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-09-26 21:59:30,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-26 21:59:30,450 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-09-26 21:59:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-09-26 21:59:30,452 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:30,452 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:30,452 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:30,452 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:30,452 INFO L82 PathProgramCache]: Analyzing trace with hash 480472048, now seen corresponding path program 106 times [2018-09-26 21:59:30,452 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:30,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:30,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:30,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:30,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:31,575 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:31,575 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 [2018-09-26 21:59:31,583 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:59:31,669 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:59:31,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:31,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:33,093 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:33,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-26 21:59:33,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-26 21:59:33,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-26 21:59:33,095 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:33,095 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 109 states. [2018-09-26 21:59:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:34,983 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-09-26 21:59:34,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-26 21:59:34,983 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-09-26 21:59:34,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:34,984 INFO L225 Difference]: With dead ends: 437 [2018-09-26 21:59:34,984 INFO L226 Difference]: Without dead ends: 435 [2018-09-26 21:59:34,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-09-26 21:59:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-09-26 21:59:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-09-26 21:59:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-09-26 21:59:34,987 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 430 [2018-09-26 21:59:34,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:34,987 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-09-26 21:59:34,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-26 21:59:34,987 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-09-26 21:59:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-09-26 21:59:34,988 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:34,989 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:34,989 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:34,989 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:34,989 INFO L82 PathProgramCache]: Analyzing trace with hash -427998822, now seen corresponding path program 107 times [2018-09-26 21:59:34,989 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:34,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:34,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:34,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:34,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:36,131 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:36,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:59:36,139 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:59:36,338 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-09-26 21:59:36,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:36,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:37,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:37,737 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-26 21:59:37,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-26 21:59:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-26 21:59:37,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:37,740 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 110 states. [2018-09-26 21:59:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:39,755 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-09-26 21:59:39,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-26 21:59:39,755 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-09-26 21:59:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:39,756 INFO L225 Difference]: With dead ends: 441 [2018-09-26 21:59:39,756 INFO L226 Difference]: Without dead ends: 439 [2018-09-26 21:59:39,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-09-26 21:59:39,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-09-26 21:59:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-09-26 21:59:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-09-26 21:59:39,759 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 434 [2018-09-26 21:59:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:39,759 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-09-26 21:59:39,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-26 21:59:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-09-26 21:59:39,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-09-26 21:59:39,760 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:39,761 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:39,761 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:39,761 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:39,761 INFO L82 PathProgramCache]: Analyzing trace with hash -557829564, now seen corresponding path program 108 times [2018-09-26 21:59:39,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:39,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:39,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:39,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:39,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:40,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:40,932 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 [2018-09-26 21:59:40,939 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:59:41,132 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-09-26 21:59:41,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:41,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:42,646 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:42,646 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-26 21:59:42,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-26 21:59:42,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-26 21:59:42,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:42,649 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 111 states. [2018-09-26 21:59:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:44,629 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-09-26 21:59:44,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-26 21:59:44,629 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 438 [2018-09-26 21:59:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:44,630 INFO L225 Difference]: With dead ends: 445 [2018-09-26 21:59:44,630 INFO L226 Difference]: Without dead ends: 443 [2018-09-26 21:59:44,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-09-26 21:59:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-09-26 21:59:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-09-26 21:59:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-09-26 21:59:44,633 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 438 [2018-09-26 21:59:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:44,633 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-09-26 21:59:44,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-26 21:59:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-09-26 21:59:44,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-09-26 21:59:44,635 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:44,635 INFO L375 BasicCegarLoop]: trace histogram [109, 109, 109, 109, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:44,635 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:44,635 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:44,635 INFO L82 PathProgramCache]: Analyzing trace with hash 627490286, now seen corresponding path program 109 times [2018-09-26 21:59:44,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:44,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:44,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:44,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:44,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:45,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:45,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:59:45,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:45,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:47,261 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:47,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-26 21:59:47,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-26 21:59:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-26 21:59:47,265 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:47,265 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 112 states. [2018-09-26 21:59:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:49,344 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-09-26 21:59:49,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-26 21:59:49,344 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 442 [2018-09-26 21:59:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:49,345 INFO L225 Difference]: With dead ends: 449 [2018-09-26 21:59:49,345 INFO L226 Difference]: Without dead ends: 447 [2018-09-26 21:59:49,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-09-26 21:59:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-09-26 21:59:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-09-26 21:59:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-09-26 21:59:49,348 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 442 [2018-09-26 21:59:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:49,348 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-09-26 21:59:49,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-26 21:59:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-09-26 21:59:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-09-26 21:59:49,349 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:49,350 INFO L375 BasicCegarLoop]: trace histogram [110, 110, 110, 110, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:49,350 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:49,350 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:49,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1496016024, now seen corresponding path program 110 times [2018-09-26 21:59:49,350 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:49,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:49,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:49,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:49,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:50,554 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:50,555 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 [2018-09-26 21:59:50,563 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:59:50,645 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:59:50,645 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:50,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:52,061 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:52,061 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-26 21:59:52,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-26 21:59:52,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-26 21:59:52,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:52,064 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 113 states. [2018-09-26 21:59:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:53,994 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-09-26 21:59:53,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-26 21:59:53,995 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 446 [2018-09-26 21:59:53,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:53,995 INFO L225 Difference]: With dead ends: 453 [2018-09-26 21:59:53,996 INFO L226 Difference]: Without dead ends: 451 [2018-09-26 21:59:53,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-09-26 21:59:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-09-26 21:59:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-09-26 21:59:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-09-26 21:59:53,998 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 446 [2018-09-26 21:59:53,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:53,999 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-09-26 21:59:53,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-26 21:59:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-09-26 21:59:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-09-26 21:59:54,000 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:54,000 INFO L375 BasicCegarLoop]: trace histogram [111, 111, 111, 111, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:54,001 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:54,001 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:54,001 INFO L82 PathProgramCache]: Analyzing trace with hash 931702338, now seen corresponding path program 111 times [2018-09-26 21:59:54,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:54,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:54,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:54,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:54,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:55,235 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:55,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:59:55,243 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:59:55,455 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-09-26 21:59:55,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:55,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:56,851 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:56,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-26 21:59:56,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-26 21:59:56,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-26 21:59:56,854 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:56,854 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 114 states. [2018-09-26 21:59:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:59,124 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-09-26 21:59:59,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-26 21:59:59,125 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 450 [2018-09-26 21:59:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:59,126 INFO L225 Difference]: With dead ends: 457 [2018-09-26 21:59:59,126 INFO L226 Difference]: Without dead ends: 455 [2018-09-26 21:59:59,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:59,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-09-26 21:59:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-09-26 21:59:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-09-26 21:59:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-09-26 21:59:59,128 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 450 [2018-09-26 21:59:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:59,129 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-09-26 21:59:59,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-26 21:59:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-09-26 21:59:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-09-26 21:59:59,130 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:59,130 INFO L375 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 1, 1, 1, 1, 1, 1] [2018-09-26 21:59:59,131 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:59,131 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:59,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1018757868, now seen corresponding path program 112 times [2018-09-26 21:59:59,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:59,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:59,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:59,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:59,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:00,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:00,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 22:00:00,389 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 22:00:00,479 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 22:00:00,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:00,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:01,947 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:01,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-26 22:00:01,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-26 22:00:01,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-26 22:00:01,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:01,949 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 115 states. [2018-09-26 22:00:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:04,240 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2018-09-26 22:00:04,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-26 22:00:04,241 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 454 [2018-09-26 22:00:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:04,242 INFO L225 Difference]: With dead ends: 461 [2018-09-26 22:00:04,242 INFO L226 Difference]: Without dead ends: 459 [2018-09-26 22:00:04,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:04,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-09-26 22:00:04,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-09-26 22:00:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-09-26 22:00:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 459 transitions. [2018-09-26 22:00:04,246 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 459 transitions. Word has length 454 [2018-09-26 22:00:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:04,246 INFO L480 AbstractCegarLoop]: Abstraction has 459 states and 459 transitions. [2018-09-26 22:00:04,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-26 22:00:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 459 transitions. [2018-09-26 22:00:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-09-26 22:00:04,248 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:04,248 INFO L375 BasicCegarLoop]: trace histogram [113, 113, 113, 113, 1, 1, 1, 1, 1, 1] [2018-09-26 22:00:04,248 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:04,248 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:04,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1136065174, now seen corresponding path program 113 times [2018-09-26 22:00:04,249 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:04,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:04,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:04,249 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:04,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:05,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:05,620 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 [2018-09-26 22:00:05,628 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 22:00:05,845 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-09-26 22:00:05,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:05,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:07,426 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:07,427 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-26 22:00:07,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-26 22:00:07,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-26 22:00:07,429 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:07,429 INFO L87 Difference]: Start difference. First operand 459 states and 459 transitions. Second operand 116 states. Received shutdown request... [2018-09-26 22:00:08,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-26 22:00:08,044 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-26 22:00:08,050 WARN L206 ceAbstractionStarter]: Timeout [2018-09-26 22:00:08,051 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 10:00:08 BoogieIcfgContainer [2018-09-26 22:00:08,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 22:00:08,052 INFO L168 Benchmark]: Toolchain (without parser) took 247716.98 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 666.4 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 378.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-26 22:00:08,053 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 22:00:08,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.36 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 22:00:08,054 INFO L168 Benchmark]: Boogie Preprocessor took 26.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 22:00:08,054 INFO L168 Benchmark]: RCFGBuilder took 403.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-26 22:00:08,055 INFO L168 Benchmark]: TraceAbstraction took 247236.19 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 666.4 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 357.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-26 22:00:08,058 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.36 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 403.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 247236.19 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 666.4 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 357.3 MB). Peak memory consumption was 1.0 GB. 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 constructing difference of abstraction (459states) and FLOYD_HOARE automaton (currently 62 states, 116 states before enhancement), while ReachableStatesComputation was computing reachable states (237 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 247.1s OverallTime, 115 OverallIterations, 113 TraceHistogramMax, 85.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1033 SDtfs, 720 SDslu, 22456 SDs, 0 SdLazy, 9577 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33000 GetRequests, 26444 SyntacticMatches, 0 SemanticMatches, 6556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 114 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 9.4s SatisfiabilityAnalysisTime, 137.5s InterpolantComputationTime, 52896 NumberOfCodeBlocks, 52896 NumberOfCodeBlocksAsserted, 3496 NumberOfCheckSat, 52668 ConstructedInterpolants, 0 QuantifiedInterpolants, 48245008 SizeOfPredicates, 113 NumberOfNonLiveVariables, 40002 ConjunctsInSsa, 6667 ConjunctsInUnsatCore, 228 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1936594 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-0-2018-09-26_22-00-08-068.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-0-2018-09-26_22-00-08-068.csv Completed graceful shutdown