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/LuxembourgOctopus.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f [2018-10-04 12:57:24,584 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:57:24,587 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:57:24,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:57:24,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:57:24,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:57:24,602 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:57:24,604 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:57:24,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:57:24,606 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:57:24,607 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 12:57:24,607 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 12:57:24,608 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 12:57:24,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 12:57:24,610 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 12:57:24,611 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 12:57:24,612 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 12:57:24,614 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 12:57:24,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 12:57:24,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 12:57:24,624 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 12:57:24,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 12:57:24,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 12:57:24,643 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 12:57:24,671 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:57:24,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:57:24,673 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:57:24,673 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:57:24,674 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:57:24,674 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:57:24,674 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:57:24,675 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:57:24,675 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:57:24,675 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:57:24,675 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:57:24,675 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:57:24,675 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:57:24,676 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:57:24,676 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:57:24,676 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:57:24,676 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:57:24,676 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:57:24,677 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:57:24,678 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:57:24,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:57:24,678 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:57:24,679 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:57:24,679 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:57:24,679 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:57:24,679 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:57:24,679 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:57:24,680 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:57:24,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:57:24,680 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:57:24,680 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 12:57:24,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:57:24,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:57:24,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:57:24,770 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:57:24,770 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:57:24,771 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LuxembourgOctopus.bpl [2018-10-04 12:57:24,771 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LuxembourgOctopus.bpl' [2018-10-04 12:57:24,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:57:24,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:57:24,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:57:24,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:57:24,824 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:57:24,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... [2018-10-04 12:57:24,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... [2018-10-04 12:57:24,865 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-04 12:57:24,865 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-04 12:57:24,865 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-04 12:57:24,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:57:24,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:57:24,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:57:24,869 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:57:24,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... [2018-10-04 12:57:24,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... [2018-10-04 12:57:24,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... [2018-10-04 12:57:24,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... [2018-10-04 12:57:24,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... [2018-10-04 12:57:24,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... [2018-10-04 12:57:24,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... [2018-10-04 12:57:24,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:57:24,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:57:24,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:57:24,896 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:57:24,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:57:24,976 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-04 12:57:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-04 12:57:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-04 12:57:25,216 INFO L338 CfgBuilder]: Using library mode [2018-10-04 12:57:25,217 INFO L202 PluginConnector]: Adding new model LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:57:25 BoogieIcfgContainer [2018-10-04 12:57:25,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:57:25,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:57:25,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:57:25,222 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:57:25,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:57:24" (1/2) ... [2018-10-04 12:57:25,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251e3884 and model type LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:57:25, skipping insertion in model container [2018-10-04 12:57:25,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:57:25" (2/2) ... [2018-10-04 12:57:25,225 INFO L112 eAbstractionObserver]: Analyzing ICFG LuxembourgOctopus.bpl [2018-10-04 12:57:25,235 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:57:25,243 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:57:25,294 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:57:25,295 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:57:25,296 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:57:25,296 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:57:25,296 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:57:25,296 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:57:25,296 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:57:25,297 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:57:25,297 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:57:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 12:57:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 12:57:25,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:25,321 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 12:57:25,322 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:25,329 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:25,330 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-10-04 12:57:25,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:25,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:25,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:25,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:25,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:25,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:57:25,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:57:25,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:57:25,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:57:25,525 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:25,527 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 12:57:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:25,574 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-04 12:57:25,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:57:25,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 12:57:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:25,588 INFO L225 Difference]: With dead ends: 13 [2018-10-04 12:57:25,588 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 12:57:25,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 12:57:25,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 12:57:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 12:57:25,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 12:57:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 12:57:25,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 12:57:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:25,627 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 12:57:25,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:57:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 12:57:25,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:57:25,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:25,628 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:57:25,629 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:25,629 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:25,629 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-10-04 12:57:25,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:25,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:25,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:25,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:25,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:25,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:25,810 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:25,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:25,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:25,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:25,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2018-10-04 12:57:25,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:57:25,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:57:25,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:25,984 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2018-10-04 12:57:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:26,081 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 12:57:26,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 12:57:26,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-10-04 12:57:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:26,082 INFO L225 Difference]: With dead ends: 8 [2018-10-04 12:57:26,083 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 12:57:26,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 3 [2018-10-04 12:57:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 12:57:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 12:57:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 12:57:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 12:57:26,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 12:57:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:26,087 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 12:57:26,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:57:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 12:57:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 12:57:26,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:26,088 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 12:57:26,088 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:26,088 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:26,088 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-10-04 12:57:26,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:26,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:26,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:26,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:26,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:26,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:26,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:26,329 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:57:26,342 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:57:26,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:26,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:26,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:26,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-10-04 12:57:26,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 12:57:26,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 12:57:26,429 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:26,429 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-10-04 12:57:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:26,466 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 12:57:26,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:57:26,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-10-04 12:57:26,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:26,467 INFO L225 Difference]: With dead ends: 9 [2018-10-04 12:57:26,468 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 12:57:26,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 3 [2018-10-04 12:57:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 12:57:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 12:57:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 12:57:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 12:57:26,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 12:57:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:26,471 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 12:57:26,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 12:57:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 12:57:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 12:57:26,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:26,472 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 12:57:26,473 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:26,473 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:26,473 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-10-04 12:57:26,473 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:26,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:26,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:26,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:26,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:26,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:26,596 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) [2018-10-04 12:57:26,608 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:26,647 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 12:57:26,647 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:26,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:26,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:26,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-10-04 12:57:26,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:57:26,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:57:26,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:26,822 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-10-04 12:57:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:26,908 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 12:57:26,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 12:57:26,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-10-04 12:57:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:26,910 INFO L225 Difference]: With dead ends: 10 [2018-10-04 12:57:26,910 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 12:57:26,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 4 [2018-10-04 12:57:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 12:57:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 12:57:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 12:57:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 12:57:26,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 12:57:26,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:26,914 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 12:57:26,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:57:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 12:57:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 12:57:26,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:26,915 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 12:57:26,915 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:26,915 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-10-04 12:57:26,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:26,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:26,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:26,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:26,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:27,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:27,034 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:27,042 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:57:27,057 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:57:27,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:27,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:27,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:27,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-10-04 12:57:27,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 12:57:27,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 12:57:27,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:27,121 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2018-10-04 12:57:27,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:27,160 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 12:57:27,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:57:27,161 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-10-04 12:57:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:27,162 INFO L225 Difference]: With dead ends: 11 [2018-10-04 12:57:27,162 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 12:57:27,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5 [2018-10-04 12:57:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 12:57:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 12:57:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 12:57:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 12:57:27,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 12:57:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:27,168 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 12:57:27,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 12:57:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 12:57:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 12:57:27,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:27,169 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 12:57:27,170 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:27,170 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:27,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-10-04 12:57:27,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:27,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:27,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:27,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:27,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:27,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:27,404 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:27,413 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:57:27,424 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 12:57:27,424 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:27,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:27,525 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:27,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-10-04 12:57:27,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 12:57:27,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 12:57:27,526 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:27,527 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2018-10-04 12:57:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:27,561 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 12:57:27,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:57:27,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2018-10-04 12:57:27,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:27,562 INFO L225 Difference]: With dead ends: 12 [2018-10-04 12:57:27,562 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 12:57:27,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 6 [2018-10-04 12:57:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 12:57:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 12:57:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 12:57:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 12:57:27,566 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 12:57:27,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:27,567 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 12:57:27,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 12:57:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 12:57:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 12:57:27,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:27,568 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 12:57:27,568 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:27,568 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-10-04 12:57:27,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:27,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:27,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:27,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:27,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:27,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:27,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:27,733 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:57:27,759 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 12:57:27,759 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:27,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:27,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:27,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-10-04 12:57:27,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 12:57:27,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 12:57:27,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:27,979 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2018-10-04 12:57:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:28,189 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 12:57:28,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 12:57:28,191 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2018-10-04 12:57:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:28,192 INFO L225 Difference]: With dead ends: 13 [2018-10-04 12:57:28,192 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:57:28,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 7 [2018-10-04 12:57:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:57:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 12:57:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 12:57:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 12:57:28,197 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 12:57:28,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:28,197 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 12:57:28,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 12:57:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 12:57:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 12:57:28,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:28,198 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 12:57:28,199 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:28,200 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:28,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-10-04 12:57:28,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:28,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:28,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:28,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:28,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:28,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:28,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:28,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:28,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:28,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:28,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-10-04 12:57:28,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 12:57:28,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 12:57:28,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:28,457 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 11 states. [2018-10-04 12:57:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:28,504 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 12:57:28,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 12:57:28,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2018-10-04 12:57:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:28,508 INFO L225 Difference]: With dead ends: 14 [2018-10-04 12:57:28,508 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 12:57:28,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8 [2018-10-04 12:57:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 12:57:28,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 12:57:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 12:57:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 12:57:28,511 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 12:57:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:28,512 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 12:57:28,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 12:57:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 12:57:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 12:57:28,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:28,512 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 12:57:28,513 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:28,513 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:28,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-10-04 12:57:28,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:28,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:28,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:28,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:28,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:28,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:28,709 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:28,723 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:57:28,740 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:57:28,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:28,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:28,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:28,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-10-04 12:57:28,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 12:57:28,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 12:57:28,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:28,932 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-10-04 12:57:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:28,967 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 12:57:28,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 12:57:28,969 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2018-10-04 12:57:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:28,969 INFO L225 Difference]: With dead ends: 15 [2018-10-04 12:57:28,969 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 12:57:28,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 9 [2018-10-04 12:57:28,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 12:57:28,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 12:57:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 12:57:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 12:57:28,973 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 12:57:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:28,973 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 12:57:28,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 12:57:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 12:57:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 12:57:28,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:28,974 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 12:57:28,974 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:28,974 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:28,974 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-10-04 12:57:28,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:28,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:28,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:28,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:28,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:29,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:29,106 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:29,115 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:57:29,124 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 12:57:29,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:29,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:29,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:29,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-10-04 12:57:29,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 12:57:29,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 12:57:29,205 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:29,205 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-10-04 12:57:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:29,247 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 12:57:29,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 12:57:29,254 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2018-10-04 12:57:29,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:29,255 INFO L225 Difference]: With dead ends: 16 [2018-10-04 12:57:29,255 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 12:57:29,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 10 [2018-10-04 12:57:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 12:57:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 12:57:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 12:57:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 12:57:29,258 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 12:57:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:29,259 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 12:57:29,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 12:57:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 12:57:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 12:57:29,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:29,260 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 12:57:29,260 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:29,260 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-10-04 12:57:29,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:29,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:29,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:29,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:29,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:29,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:29,471 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:29,485 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:57:29,500 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:57:29,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:29,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:29,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:29,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-10-04 12:57:29,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 12:57:29,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 12:57:29,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:29,743 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2018-10-04 12:57:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:29,816 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 12:57:29,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 12:57:29,817 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-10-04 12:57:29,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:29,818 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:57:29,818 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 12:57:29,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 11 [2018-10-04 12:57:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 12:57:29,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 12:57:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 12:57:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 12:57:29,823 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 12:57:29,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:29,823 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 12:57:29,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 12:57:29,823 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 12:57:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 12:57:29,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:29,824 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 12:57:29,824 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:29,825 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:29,825 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-10-04 12:57:29,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:29,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:29,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:29,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:29,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:30,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:30,011 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:30,019 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:57:30,030 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 12:57:30,031 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:30,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:30,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:30,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-10-04 12:57:30,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 12:57:30,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 12:57:30,125 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:30,125 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-10-04 12:57:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:30,155 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 12:57:30,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 12:57:30,156 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-10-04 12:57:30,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:30,157 INFO L225 Difference]: With dead ends: 18 [2018-10-04 12:57:30,157 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 12:57:30,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 12 [2018-10-04 12:57:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 12:57:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 12:57:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 12:57:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 12:57:30,161 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 12:57:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:30,161 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 12:57:30,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 12:57:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 12:57:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 12:57:30,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:30,162 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 12:57:30,163 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:30,163 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:30,163 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-10-04 12:57:30,163 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:30,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:30,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:30,164 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:30,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:30,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:30,366 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:30,373 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:57:30,388 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 12:57:30,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:30,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:30,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:30,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-10-04 12:57:30,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 12:57:30,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 12:57:30,495 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:30,495 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 16 states. [2018-10-04 12:57:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:30,549 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 12:57:30,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 12:57:30,549 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2018-10-04 12:57:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:30,550 INFO L225 Difference]: With dead ends: 19 [2018-10-04 12:57:30,550 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 12:57:30,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 13 [2018-10-04 12:57:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 12:57:30,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 12:57:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 12:57:30,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 12:57:30,555 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 12:57:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:30,556 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 12:57:30,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 12:57:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 12:57:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 12:57:30,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:30,557 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 12:57:30,557 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:30,557 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:30,557 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-10-04 12:57:30,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:30,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:30,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:30,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:30,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:30,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:30,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:30,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:30,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:30,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:30,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-10-04 12:57:30,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 12:57:30,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 12:57:30,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:30,884 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2018-10-04 12:57:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:31,064 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 12:57:31,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 12:57:31,067 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2018-10-04 12:57:31,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:31,067 INFO L225 Difference]: With dead ends: 20 [2018-10-04 12:57:31,067 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 12:57:31,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-04 12:57:31,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 12:57:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 12:57:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 12:57:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 12:57:31,071 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 12:57:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:31,071 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 12:57:31,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 12:57:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 12:57:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 12:57:31,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:31,072 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 12:57:31,072 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:31,072 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:31,073 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-10-04 12:57:31,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:31,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:31,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:31,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:31,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:31,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:31,335 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:31,343 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:57:31,353 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:57:31,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:31,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:31,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:31,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-10-04 12:57:31,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 12:57:31,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 12:57:31,438 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:31,439 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-10-04 12:57:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:31,476 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 12:57:31,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 12:57:31,477 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-10-04 12:57:31,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:31,478 INFO L225 Difference]: With dead ends: 21 [2018-10-04 12:57:31,478 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 12:57:31,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 15 [2018-10-04 12:57:31,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 12:57:31,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 12:57:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 12:57:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 12:57:31,483 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 12:57:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:31,483 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 12:57:31,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 12:57:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 12:57:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 12:57:31,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:31,484 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 12:57:31,484 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:31,485 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:31,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-10-04 12:57:31,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:31,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:31,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:31,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:31,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:31,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:31,759 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:31,767 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:57:31,894 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 12:57:31,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:31,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:32,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:32,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-10-04 12:57:32,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 12:57:32,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 12:57:32,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:32,343 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 19 states. [2018-10-04 12:57:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:32,391 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 12:57:32,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 12:57:32,391 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2018-10-04 12:57:32,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:32,392 INFO L225 Difference]: With dead ends: 22 [2018-10-04 12:57:32,393 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 12:57:32,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 16 [2018-10-04 12:57:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 12:57:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 12:57:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 12:57:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 12:57:32,397 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 12:57:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:32,397 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 12:57:32,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 12:57:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 12:57:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 12:57:32,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:32,398 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 12:57:32,398 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:32,398 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:32,398 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-10-04 12:57:32,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:32,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:32,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:32,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:32,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:32,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:32,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:32,653 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:57:32,689 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:57:32,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:32,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:32,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:32,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2018-10-04 12:57:32,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 12:57:32,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 12:57:32,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:32,909 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 20 states. [2018-10-04 12:57:32,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:32,977 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 12:57:32,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 12:57:32,978 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2018-10-04 12:57:32,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:32,978 INFO L225 Difference]: With dead ends: 23 [2018-10-04 12:57:32,978 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 12:57:32,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 17 [2018-10-04 12:57:32,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 12:57:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 12:57:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 12:57:32,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 12:57:32,982 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-04 12:57:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:32,982 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 12:57:32,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 12:57:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 12:57:32,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 12:57:32,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:32,983 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-04 12:57:32,983 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:32,983 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:32,983 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-10-04 12:57:32,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:32,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:32,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:32,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:32,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:33,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:33,675 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:33,683 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:57:33,700 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 12:57:33,700 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:33,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:33,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:33,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2018-10-04 12:57:33,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 12:57:33,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 12:57:33,942 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:33,942 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 21 states. [2018-10-04 12:57:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:33,986 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-04 12:57:33,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 12:57:33,987 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 20 [2018-10-04 12:57:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:33,987 INFO L225 Difference]: With dead ends: 24 [2018-10-04 12:57:33,987 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 12:57:33,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime 18 [2018-10-04 12:57:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 12:57:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 12:57:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 12:57:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 12:57:33,995 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-04 12:57:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:33,996 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 12:57:33,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 12:57:33,998 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 12:57:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 12:57:33,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:33,999 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-04 12:57:33,999 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:33,999 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-10-04 12:57:34,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:34,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:34,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:34,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:34,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:34,419 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:34,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:34,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:34,434 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:57:34,451 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-04 12:57:34,451 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:34,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:34,854 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:34,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2018-10-04 12:57:34,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 12:57:34,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 12:57:34,855 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:34,855 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 22 states. [2018-10-04 12:57:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:34,919 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 12:57:34,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 12:57:34,920 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2018-10-04 12:57:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:34,921 INFO L225 Difference]: With dead ends: 25 [2018-10-04 12:57:34,921 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 12:57:34,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 6 [2018-10-04 12:57:34,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 12:57:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 12:57:34,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 12:57:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 12:57:34,926 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-04 12:57:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:34,926 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 12:57:34,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 12:57:34,926 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 12:57:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 12:57:34,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:34,927 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-04 12:57:34,927 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:34,928 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:34,928 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-10-04 12:57:34,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:34,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:34,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:34,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:34,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:35,224 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:35,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:35,250 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:35,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:35,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:35,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:35,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2018-10-04 12:57:35,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 12:57:35,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 12:57:35,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:35,402 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 23 states. [2018-10-04 12:57:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:35,441 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-04 12:57:35,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 12:57:35,442 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2018-10-04 12:57:35,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:35,443 INFO L225 Difference]: With dead ends: 26 [2018-10-04 12:57:35,443 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 12:57:35,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 7 [2018-10-04 12:57:35,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 12:57:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 12:57:35,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 12:57:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 12:57:35,448 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-04 12:57:35,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:35,448 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 12:57:35,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 12:57:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 12:57:35,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 12:57:35,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:35,449 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-04 12:57:35,449 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:35,449 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:35,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-10-04 12:57:35,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:35,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:35,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:35,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:35,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:35,851 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:35,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:35,896 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:35,904 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:57:35,917 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:57:35,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:35,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:36,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:36,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2018-10-04 12:57:36,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 12:57:36,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 12:57:36,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:36,176 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 24 states. [2018-10-04 12:57:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:36,271 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 12:57:36,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 12:57:36,271 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 23 [2018-10-04 12:57:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:36,272 INFO L225 Difference]: With dead ends: 27 [2018-10-04 12:57:36,272 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 12:57:36,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 8 [2018-10-04 12:57:36,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 12:57:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 12:57:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 12:57:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 12:57:36,276 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-04 12:57:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:36,276 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 12:57:36,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 12:57:36,276 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 12:57:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 12:57:36,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:36,277 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-04 12:57:36,277 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:36,277 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:36,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-10-04 12:57:36,278 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:36,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:36,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:36,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:36,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:36,609 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:36,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:36,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:36,689 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:57:36,707 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-04 12:57:36,707 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:36,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:36,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:36,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2018-10-04 12:57:36,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 12:57:36,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 12:57:36,796 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:36,796 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 25 states. [2018-10-04 12:57:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:36,842 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-04 12:57:36,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 12:57:36,845 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 24 [2018-10-04 12:57:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:36,846 INFO L225 Difference]: With dead ends: 28 [2018-10-04 12:57:36,846 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 12:57:36,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 9 [2018-10-04 12:57:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 12:57:36,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 12:57:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 12:57:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 12:57:36,851 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-04 12:57:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:36,851 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 12:57:36,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 12:57:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 12:57:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 12:57:36,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:36,852 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-04 12:57:36,852 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:36,852 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:36,852 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-10-04 12:57:36,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:36,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:36,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:36,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:36,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:37,707 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:37,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:37,760 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:37,769 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:57:37,781 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:57:37,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:37,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:38,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:38,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2018-10-04 12:57:38,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 12:57:38,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 12:57:38,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:38,050 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 26 states. [2018-10-04 12:57:38,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:38,163 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 12:57:38,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 12:57:38,164 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25 [2018-10-04 12:57:38,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:38,164 INFO L225 Difference]: With dead ends: 29 [2018-10-04 12:57:38,164 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 12:57:38,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.6s impTime 10 [2018-10-04 12:57:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 12:57:38,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 12:57:38,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 12:57:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 12:57:38,168 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-04 12:57:38,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:38,168 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 12:57:38,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 12:57:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 12:57:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 12:57:38,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:38,169 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-04 12:57:38,169 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:38,169 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-10-04 12:57:38,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:38,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:38,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:38,170 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:38,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:38,413 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:38,448 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:38,448 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:38,457 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:57:38,479 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 12:57:38,480 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:38,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:38,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:38,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2018-10-04 12:57:38,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 12:57:38,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 12:57:38,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:38,580 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 27 states. [2018-10-04 12:57:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:38,736 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-04 12:57:38,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 12:57:38,737 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 26 [2018-10-04 12:57:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:38,737 INFO L225 Difference]: With dead ends: 30 [2018-10-04 12:57:38,737 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 12:57:38,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 11 [2018-10-04 12:57:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 12:57:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 12:57:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 12:57:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 12:57:38,742 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-04 12:57:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:38,742 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 12:57:38,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 12:57:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 12:57:38,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 12:57:38,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:38,743 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-04 12:57:38,743 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:38,743 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:38,744 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-10-04 12:57:38,744 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:38,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:38,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:38,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:38,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:39,019 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:39,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:39,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:39,078 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:57:39,099 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 12:57:39,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:39,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:39,218 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:39,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2018-10-04 12:57:39,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 12:57:39,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 12:57:39,219 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:39,219 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 28 states. [2018-10-04 12:57:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:39,306 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 12:57:39,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 12:57:39,306 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 27 [2018-10-04 12:57:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:39,307 INFO L225 Difference]: With dead ends: 31 [2018-10-04 12:57:39,307 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 12:57:39,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 12 [2018-10-04 12:57:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 12:57:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 12:57:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 12:57:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 12:57:39,311 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-04 12:57:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:39,312 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 12:57:39,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 12:57:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 12:57:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 12:57:39,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:39,313 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-04 12:57:39,313 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:39,313 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:39,313 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-10-04 12:57:39,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:39,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:39,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:39,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:39,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:39,534 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:39,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:39,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:39,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:39,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:39,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:39,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2018-10-04 12:57:39,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 12:57:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 12:57:39,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:39,850 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 29 states. [2018-10-04 12:57:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:39,938 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-04 12:57:39,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 12:57:39,939 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 28 [2018-10-04 12:57:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:39,939 INFO L225 Difference]: With dead ends: 32 [2018-10-04 12:57:39,939 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 12:57:39,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 13 [2018-10-04 12:57:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 12:57:39,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 12:57:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 12:57:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 12:57:39,942 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-04 12:57:39,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:39,943 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 12:57:39,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 12:57:39,943 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 12:57:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 12:57:39,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:39,944 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-04 12:57:39,944 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:39,944 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:39,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-10-04 12:57:39,944 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:39,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:39,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:39,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:39,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:40,222 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:40,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:40,363 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:40,373 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:57:40,391 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:57:40,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:40,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:40,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:40,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2018-10-04 12:57:40,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 12:57:40,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 12:57:40,476 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:40,476 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 30 states. [2018-10-04 12:57:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:40,520 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 12:57:40,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 12:57:40,521 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29 [2018-10-04 12:57:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:40,521 INFO L225 Difference]: With dead ends: 33 [2018-10-04 12:57:40,522 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 12:57:40,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 14 [2018-10-04 12:57:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 12:57:40,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 12:57:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 12:57:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 12:57:40,526 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-04 12:57:40,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:40,526 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 12:57:40,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 12:57:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 12:57:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 12:57:40,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:40,527 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-04 12:57:40,527 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:40,527 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:40,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-10-04 12:57:40,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:40,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:40,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:40,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:40,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:40,783 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:40,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:40,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:40,898 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:57:40,917 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-04 12:57:40,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:40,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:41,012 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:41,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2018-10-04 12:57:41,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 12:57:41,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 12:57:41,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:41,013 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 31 states. [2018-10-04 12:57:41,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:41,233 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-04 12:57:41,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 12:57:41,233 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 30 [2018-10-04 12:57:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:41,234 INFO L225 Difference]: With dead ends: 34 [2018-10-04 12:57:41,234 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 12:57:41,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 15 [2018-10-04 12:57:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 12:57:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 12:57:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 12:57:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 12:57:41,239 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-04 12:57:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:41,239 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 12:57:41,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 12:57:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 12:57:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 12:57:41,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:41,240 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-04 12:57:41,240 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:41,240 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:41,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-10-04 12:57:41,241 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:41,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:41,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:41,242 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:41,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:41,627 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:41,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:41,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:41,873 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:57:41,891 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:57:41,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:41,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:41,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:41,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2018-10-04 12:57:41,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 12:57:41,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 12:57:41,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:41,970 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 32 states. [2018-10-04 12:57:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:42,028 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 12:57:42,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 12:57:42,029 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 31 [2018-10-04 12:57:42,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:42,029 INFO L225 Difference]: With dead ends: 35 [2018-10-04 12:57:42,030 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 12:57:42,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 16 [2018-10-04 12:57:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 12:57:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 12:57:42,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 12:57:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 12:57:42,035 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-04 12:57:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:42,035 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 12:57:42,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 12:57:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 12:57:42,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 12:57:42,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:42,036 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-04 12:57:42,036 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:42,037 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:42,037 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-10-04 12:57:42,037 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:42,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:42,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:42,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:42,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:42,350 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:42,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:42,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:42,576 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:57:42,601 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-04 12:57:42,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:42,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:42,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:42,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2018-10-04 12:57:42,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 12:57:42,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 12:57:42,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:42,693 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 33 states. [2018-10-04 12:57:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:42,749 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-04 12:57:42,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 12:57:42,749 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 32 [2018-10-04 12:57:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:42,750 INFO L225 Difference]: With dead ends: 36 [2018-10-04 12:57:42,750 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 12:57:42,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 17 [2018-10-04 12:57:42,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 12:57:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 12:57:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 12:57:42,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 12:57:42,754 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-04 12:57:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:42,754 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 12:57:42,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 12:57:42,754 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 12:57:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 12:57:42,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:42,755 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-04 12:57:42,755 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:42,755 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:42,755 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-10-04 12:57:42,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:42,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:42,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:42,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:42,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:43,089 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:43,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:43,349 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:43,358 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:57:43,400 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-04 12:57:43,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:43,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:43,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:43,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2018-10-04 12:57:43,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 12:57:43,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 12:57:43,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:43,499 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 34 states. [2018-10-04 12:57:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:43,564 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 12:57:43,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 12:57:43,565 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 33 [2018-10-04 12:57:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:43,566 INFO L225 Difference]: With dead ends: 37 [2018-10-04 12:57:43,566 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 12:57:43,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 18 [2018-10-04 12:57:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 12:57:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 12:57:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 12:57:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 12:57:43,570 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-04 12:57:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:43,571 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 12:57:43,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 12:57:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 12:57:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 12:57:43,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:43,571 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-04 12:57:43,572 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:43,572 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:43,572 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-10-04 12:57:43,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:43,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:43,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:43,573 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:43,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:43,885 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:44,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:44,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:44,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:44,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:44,332 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:44,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2018-10-04 12:57:44,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 12:57:44,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 12:57:44,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:44,333 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 35 states. [2018-10-04 12:57:44,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:44,395 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-04 12:57:44,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 12:57:44,396 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 34 [2018-10-04 12:57:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:44,396 INFO L225 Difference]: With dead ends: 38 [2018-10-04 12:57:44,396 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 12:57:44,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 19 [2018-10-04 12:57:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 12:57:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 12:57:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 12:57:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 12:57:44,401 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-04 12:57:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:44,401 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 12:57:44,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 12:57:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 12:57:44,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 12:57:44,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:44,402 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-04 12:57:44,402 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:44,402 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:44,402 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-10-04 12:57:44,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:44,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:44,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:44,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:44,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:44,689 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:44,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:44,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:44,871 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:57:44,893 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:57:44,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:44,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:44,998 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:44,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2018-10-04 12:57:44,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 12:57:44,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 12:57:44,999 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:44,999 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 36 states. [2018-10-04 12:57:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:45,045 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 12:57:45,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 12:57:45,045 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2018-10-04 12:57:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:45,046 INFO L225 Difference]: With dead ends: 39 [2018-10-04 12:57:45,046 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 12:57:45,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 20 [2018-10-04 12:57:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 12:57:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 12:57:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 12:57:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 12:57:45,050 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-04 12:57:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:45,051 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 12:57:45,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 12:57:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 12:57:45,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 12:57:45,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:45,051 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-04 12:57:45,052 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:45,052 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:45,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-10-04 12:57:45,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:45,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:45,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:45,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:45,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:45,797 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:46,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:46,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:46,205 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:57:46,231 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 12:57:46,231 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:46,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:46,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:46,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2018-10-04 12:57:46,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 12:57:46,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 12:57:46,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:46,399 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 37 states. [2018-10-04 12:57:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:46,518 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-04 12:57:46,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 12:57:46,518 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 36 [2018-10-04 12:57:46,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:46,518 INFO L225 Difference]: With dead ends: 40 [2018-10-04 12:57:46,518 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 12:57:46,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 21 [2018-10-04 12:57:46,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 12:57:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 12:57:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 12:57:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 12:57:46,520 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-04 12:57:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:46,521 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 12:57:46,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 12:57:46,521 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 12:57:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 12:57:46,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:46,521 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-04 12:57:46,521 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:46,521 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-10-04 12:57:46,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:46,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:46,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:46,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:46,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:47,009 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:47,208 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:47,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:47,212 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:47,220 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:57:47,262 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:57:47,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:47,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:47,780 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:47,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2018-10-04 12:57:47,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 12:57:47,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 12:57:47,781 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:47,781 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 38 states. [2018-10-04 12:57:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:47,848 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 12:57:47,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 12:57:47,849 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 37 [2018-10-04 12:57:47,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:47,850 INFO L225 Difference]: With dead ends: 41 [2018-10-04 12:57:47,850 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 12:57:47,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.4s impTime 7 [2018-10-04 12:57:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 12:57:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 12:57:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 12:57:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 12:57:47,854 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-04 12:57:47,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:47,854 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 12:57:47,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 12:57:47,855 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 12:57:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 12:57:47,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:47,855 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-04 12:57:47,855 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:47,855 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:47,856 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-10-04 12:57:47,856 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:47,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:47,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:47,857 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:47,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:48,065 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:48,507 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:48,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:48,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:48,551 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:57:48,578 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 12:57:48,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:48,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:48,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:48,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2018-10-04 12:57:48,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 12:57:48,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 12:57:48,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:48,712 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 39 states. [2018-10-04 12:57:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:48,777 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-04 12:57:48,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 12:57:48,777 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 38 [2018-10-04 12:57:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:48,778 INFO L225 Difference]: With dead ends: 42 [2018-10-04 12:57:48,778 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 12:57:48,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 8 [2018-10-04 12:57:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 12:57:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 12:57:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 12:57:48,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 12:57:48,781 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-04 12:57:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:48,782 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 12:57:48,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 12:57:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 12:57:48,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 12:57:48,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:48,782 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-04 12:57:48,783 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:48,783 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:48,783 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-10-04 12:57:48,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:48,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:48,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:48,784 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:48,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:48,998 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:49,450 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:49,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:49,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:49,634 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:57:49,662 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 12:57:49,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:49,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:49,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:49,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2018-10-04 12:57:49,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 12:57:49,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 12:57:49,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:49,760 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 40 states. [2018-10-04 12:57:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:49,877 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 12:57:49,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 12:57:49,877 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 39 [2018-10-04 12:57:49,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:49,878 INFO L225 Difference]: With dead ends: 43 [2018-10-04 12:57:49,878 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 12:57:49,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 9 [2018-10-04 12:57:49,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 12:57:49,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 12:57:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 12:57:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 12:57:49,880 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-04 12:57:49,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:49,881 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 12:57:49,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 12:57:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 12:57:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 12:57:49,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:49,882 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-04 12:57:49,882 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:49,882 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:49,882 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-10-04 12:57:49,882 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:49,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:49,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:49,883 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:49,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:50,123 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:50,575 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:50,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:50,684 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:50,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:50,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:50,902 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:50,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2018-10-04 12:57:50,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 12:57:50,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 12:57:50,903 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:50,903 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 41 states. [2018-10-04 12:57:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:50,967 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-04 12:57:50,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 12:57:50,967 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 40 [2018-10-04 12:57:50,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:50,968 INFO L225 Difference]: With dead ends: 44 [2018-10-04 12:57:50,968 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 12:57:50,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 10 [2018-10-04 12:57:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 12:57:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 12:57:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 12:57:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 12:57:50,971 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-04 12:57:50,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:50,971 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 12:57:50,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 12:57:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 12:57:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 12:57:50,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:50,972 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-04 12:57:50,972 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:50,973 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-10-04 12:57:50,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:50,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:50,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:50,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:50,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:51,614 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:52,544 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:52,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:52,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:52,605 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:57:52,629 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:57:52,629 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:52,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:52,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:52,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2018-10-04 12:57:52,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 12:57:52,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 12:57:52,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:52,728 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 42 states. [2018-10-04 12:57:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:52,825 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 12:57:52,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 12:57:52,826 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 41 [2018-10-04 12:57:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:52,826 INFO L225 Difference]: With dead ends: 45 [2018-10-04 12:57:52,826 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 12:57:52,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 11 [2018-10-04 12:57:52,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 12:57:52,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 12:57:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 12:57:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 12:57:52,830 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-04 12:57:52,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:52,831 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 12:57:52,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 12:57:52,831 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 12:57:52,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 12:57:52,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:52,831 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-04 12:57:52,832 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:52,832 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:52,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-10-04 12:57:52,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:52,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:52,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:52,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:52,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:53,065 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:53,493 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:53,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:53,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:53,680 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:57:53,710 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-04 12:57:53,710 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:53,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:53,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:53,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2018-10-04 12:57:53,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 12:57:53,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 12:57:53,817 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:53,818 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 43 states. [2018-10-04 12:57:53,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:53,916 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-04 12:57:53,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 12:57:53,916 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 42 [2018-10-04 12:57:53,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:53,917 INFO L225 Difference]: With dead ends: 46 [2018-10-04 12:57:53,917 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 12:57:53,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime 12 [2018-10-04 12:57:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 12:57:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 12:57:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 12:57:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 12:57:53,920 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-04 12:57:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:53,921 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 12:57:53,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 12:57:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 12:57:53,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 12:57:53,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:53,921 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-04 12:57:53,921 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:53,921 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:53,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-10-04 12:57:53,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:53,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:53,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:53,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:53,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:54,170 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:54,537 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:54,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:54,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:54,596 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:57:54,621 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:57:54,622 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:54,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:54,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:54,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2018-10-04 12:57:54,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 12:57:54,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 12:57:54,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:54,736 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 44 states. [2018-10-04 12:57:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:54,827 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 12:57:54,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 12:57:54,828 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 43 [2018-10-04 12:57:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:54,828 INFO L225 Difference]: With dead ends: 47 [2018-10-04 12:57:54,828 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 12:57:54,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 13 [2018-10-04 12:57:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 12:57:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 12:57:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 12:57:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 12:57:54,831 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-04 12:57:54,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:54,832 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 12:57:54,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 12:57:54,832 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 12:57:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 12:57:54,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:54,832 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-04 12:57:54,833 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:54,833 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:54,833 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-10-04 12:57:54,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:54,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:54,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:54,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:54,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:55,072 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:55,478 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:55,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:55,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:55,768 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:57:55,801 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 12:57:55,801 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:55,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:55,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:55,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2018-10-04 12:57:55,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 12:57:55,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 12:57:55,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:55,928 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 45 states. [2018-10-04 12:57:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:56,093 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-04 12:57:56,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 12:57:56,094 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 44 [2018-10-04 12:57:56,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:56,095 INFO L225 Difference]: With dead ends: 48 [2018-10-04 12:57:56,095 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 12:57:56,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 14 [2018-10-04 12:57:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 12:57:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 12:57:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 12:57:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 12:57:56,097 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-04 12:57:56,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:56,097 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 12:57:56,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 12:57:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 12:57:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 12:57:56,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:56,098 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-04 12:57:56,098 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:56,098 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:56,098 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-10-04 12:57:56,098 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:56,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:56,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:56,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:56,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:56,457 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:57,156 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:57,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:57,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:57,468 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:57:57,500 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-04 12:57:57,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:57:57,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:57,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:57,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2018-10-04 12:57:57,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 12:57:57,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 12:57:57,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:57,628 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 46 states. [2018-10-04 12:57:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:57,705 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 12:57:57,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 12:57:57,706 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 45 [2018-10-04 12:57:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:57,707 INFO L225 Difference]: With dead ends: 49 [2018-10-04 12:57:57,707 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 12:57:57,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 15 [2018-10-04 12:57:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 12:57:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 12:57:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 12:57:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 12:57:57,710 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-04 12:57:57,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:57,710 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 12:57:57,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 12:57:57,710 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 12:57:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 12:57:57,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:57,711 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-04 12:57:57,711 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:57,711 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:57,711 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-10-04 12:57:57,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:57,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:57,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:57,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:57:57,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:58,133 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:57:58,958 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:57:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:59,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:57:59,313 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:57:59,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:59,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:57:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:57:59,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:57:59,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2018-10-04 12:57:59,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 12:57:59,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 12:57:59,459 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:57:59,459 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 47 states. [2018-10-04 12:57:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:57:59,541 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-04 12:57:59,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 12:57:59,542 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 46 [2018-10-04 12:57:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:57:59,542 INFO L225 Difference]: With dead ends: 50 [2018-10-04 12:57:59,542 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 12:57:59,543 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 16 [2018-10-04 12:57:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 12:57:59,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 12:57:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 12:57:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 12:57:59,545 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-04 12:57:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:57:59,545 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 12:57:59,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 12:57:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 12:57:59,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 12:57:59,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:57:59,545 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-04 12:57:59,546 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:57:59,546 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:57:59,546 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-10-04 12:57:59,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:57:59,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:57:59,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:59,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:57:59,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:57:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:57:59,901 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:00,302 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:00,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:00,694 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:00,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:58:00,729 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:58:00,729 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:00,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:00,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:00,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2018-10-04 12:58:00,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 12:58:00,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 12:58:00,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:00,858 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 48 states. [2018-10-04 12:58:01,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:01,028 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 12:58:01,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 12:58:01,029 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 47 [2018-10-04 12:58:01,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:01,029 INFO L225 Difference]: With dead ends: 51 [2018-10-04 12:58:01,030 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 12:58:01,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 17 [2018-10-04 12:58:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 12:58:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 12:58:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 12:58:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 12:58:01,033 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-04 12:58:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:01,034 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 12:58:01,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 12:58:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 12:58:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 12:58:01,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:01,034 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-04 12:58:01,035 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:01,035 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:01,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-10-04 12:58:01,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:01,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:01,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:01,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:01,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:01,472 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:02,389 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:02,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:02,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:02,516 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:58:02,555 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-04 12:58:02,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:02,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:02,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:02,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2018-10-04 12:58:02,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 12:58:02,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 12:58:02,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:02,905 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 49 states. [2018-10-04 12:58:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:03,304 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-04 12:58:03,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 12:58:03,305 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 48 [2018-10-04 12:58:03,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:03,306 INFO L225 Difference]: With dead ends: 52 [2018-10-04 12:58:03,306 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 12:58:03,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime 18 [2018-10-04 12:58:03,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 12:58:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 12:58:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 12:58:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 12:58:03,309 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-04 12:58:03,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:03,309 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 12:58:03,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 12:58:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 12:58:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 12:58:03,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:03,310 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-04 12:58:03,310 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:03,310 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:03,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-10-04 12:58:03,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:03,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:03,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:03,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:03,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:03,834 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:04,310 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:04,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:04,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:04,797 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:58:04,828 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:58:04,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:04,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:04,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:04,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2018-10-04 12:58:04,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 12:58:04,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 12:58:04,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:04,972 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 50 states. [2018-10-04 12:58:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:05,057 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 12:58:05,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 12:58:05,057 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 49 [2018-10-04 12:58:05,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:05,058 INFO L225 Difference]: With dead ends: 53 [2018-10-04 12:58:05,058 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 12:58:05,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 19 [2018-10-04 12:58:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 12:58:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 12:58:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 12:58:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 12:58:05,060 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-04 12:58:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:05,060 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 12:58:05,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 12:58:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 12:58:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 12:58:05,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:05,061 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-04 12:58:05,061 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:05,061 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:05,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-10-04 12:58:05,061 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:05,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:05,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:05,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:05,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:05,336 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:05,579 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:05,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:05,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:05,808 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:58:05,845 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 12:58:05,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:05,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:05,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:05,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2018-10-04 12:58:05,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 12:58:05,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 12:58:05,960 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:05,960 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 51 states. [2018-10-04 12:58:06,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:06,029 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-04 12:58:06,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 12:58:06,036 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 50 [2018-10-04 12:58:06,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:06,036 INFO L225 Difference]: With dead ends: 54 [2018-10-04 12:58:06,037 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 12:58:06,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 20 [2018-10-04 12:58:06,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 12:58:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 12:58:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 12:58:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 12:58:06,039 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-04 12:58:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:06,040 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 12:58:06,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 12:58:06,040 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 12:58:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 12:58:06,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:06,040 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-04 12:58:06,041 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:06,041 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:06,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-10-04 12:58:06,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:06,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:06,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:06,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:06,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:06,247 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:06,671 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:07,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:07,162 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:07,168 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:58:07,205 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 12:58:07,205 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:07,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:07,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:07,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2018-10-04 12:58:07,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 12:58:07,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 12:58:07,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:07,330 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 52 states. [2018-10-04 12:58:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:07,397 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 12:58:07,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 12:58:07,398 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 51 [2018-10-04 12:58:07,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:07,399 INFO L225 Difference]: With dead ends: 55 [2018-10-04 12:58:07,399 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 12:58:07,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime 21 [2018-10-04 12:58:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 12:58:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 12:58:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 12:58:07,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 12:58:07,403 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-04 12:58:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:07,403 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 12:58:07,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 12:58:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 12:58:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 12:58:07,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:07,404 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-04 12:58:07,404 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:07,404 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:07,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-10-04 12:58:07,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:07,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:07,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:07,405 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:07,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:08,499 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:08,929 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:09,339 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:09,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:09,344 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:09,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:09,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:09,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:09,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2018-10-04 12:58:09,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 12:58:09,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 12:58:09,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:09,500 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 53 states. [2018-10-04 12:58:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:09,566 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-04 12:58:09,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 12:58:09,566 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 52 [2018-10-04 12:58:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:09,567 INFO L225 Difference]: With dead ends: 56 [2018-10-04 12:58:09,567 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 12:58:09,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 8 [2018-10-04 12:58:09,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 12:58:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 12:58:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 12:58:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 12:58:09,570 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-04 12:58:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:09,571 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 12:58:09,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 12:58:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 12:58:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 12:58:09,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:09,571 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-04 12:58:09,572 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:09,572 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:09,572 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-10-04 12:58:09,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:09,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:09,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:09,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:09,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:09,925 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:10,390 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:10,645 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:10,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:10,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:10,675 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:58:10,726 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:58:10,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:10,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:11,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:11,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2018-10-04 12:58:11,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 12:58:11,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 12:58:11,197 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:11,197 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 54 states. [2018-10-04 12:58:11,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:11,294 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 12:58:11,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 12:58:11,295 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 53 [2018-10-04 12:58:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:11,296 INFO L225 Difference]: With dead ends: 57 [2018-10-04 12:58:11,296 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 12:58:11,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.8s impTime 8 [2018-10-04 12:58:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 12:58:11,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 12:58:11,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 12:58:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 12:58:11,298 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-04 12:58:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:11,299 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 12:58:11,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 12:58:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 12:58:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 12:58:11,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:11,299 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-04 12:58:11,300 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:11,300 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:11,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-10-04 12:58:11,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:11,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:11,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:11,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:11,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:11,568 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:11,764 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:12,340 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:12,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:12,404 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:12,412 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:58:12,453 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-04 12:58:12,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:12,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:12,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:12,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2018-10-04 12:58:12,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 12:58:12,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 12:58:12,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:12,615 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 55 states. [2018-10-04 12:58:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:12,696 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-04 12:58:12,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 12:58:12,697 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 54 [2018-10-04 12:58:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:12,697 INFO L225 Difference]: With dead ends: 58 [2018-10-04 12:58:12,697 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 12:58:12,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 9 [2018-10-04 12:58:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 12:58:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 12:58:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 12:58:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 12:58:12,700 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-04 12:58:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:12,700 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 12:58:12,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 12:58:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 12:58:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 12:58:12,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:12,701 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-04 12:58:12,701 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:12,701 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:12,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-10-04 12:58:12,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:12,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:12,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:12,702 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:12,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:12,974 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:13,422 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:14,081 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:14,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:14,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:14,242 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:58:14,274 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:58:14,274 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:14,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:14,416 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:14,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2018-10-04 12:58:14,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 12:58:14,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 12:58:14,416 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:14,417 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 56 states. [2018-10-04 12:58:14,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:14,530 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 12:58:14,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 12:58:14,530 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 55 [2018-10-04 12:58:14,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:14,531 INFO L225 Difference]: With dead ends: 59 [2018-10-04 12:58:14,531 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 12:58:14,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 10 [2018-10-04 12:58:14,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 12:58:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 12:58:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 12:58:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 12:58:14,534 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-04 12:58:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:14,534 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 12:58:14,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 12:58:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 12:58:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 12:58:14,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:14,535 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-04 12:58:14,535 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:14,535 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:14,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-10-04 12:58:14,535 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:14,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:14,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:14,536 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:14,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:14,768 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:14,982 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:15,374 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:15,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:15,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:15,599 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:58:15,644 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-04 12:58:15,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:15,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:15,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:15,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2018-10-04 12:58:15,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 12:58:15,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 12:58:15,813 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:15,813 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 57 states. [2018-10-04 12:58:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:15,912 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-04 12:58:15,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 12:58:15,912 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 56 [2018-10-04 12:58:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:15,913 INFO L225 Difference]: With dead ends: 60 [2018-10-04 12:58:15,913 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 12:58:15,913 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 11 [2018-10-04 12:58:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 12:58:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 12:58:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 12:58:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 12:58:15,915 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-04 12:58:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:15,916 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 12:58:15,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 12:58:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 12:58:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 12:58:15,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:15,916 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-04 12:58:15,916 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:15,916 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:15,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-10-04 12:58:15,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:15,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:15,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:15,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:15,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:16,172 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:16,590 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:16,935 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:17,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:17,007 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:17,014 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:58:17,062 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 12:58:17,062 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:17,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:17,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:17,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2018-10-04 12:58:17,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 12:58:17,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 12:58:17,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:17,363 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 58 states. [2018-10-04 12:58:17,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:17,468 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 12:58:17,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 12:58:17,469 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 57 [2018-10-04 12:58:17,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:17,469 INFO L225 Difference]: With dead ends: 61 [2018-10-04 12:58:17,470 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 12:58:17,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 12 [2018-10-04 12:58:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 12:58:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 12:58:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 12:58:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 12:58:17,473 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-04 12:58:17,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:17,473 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 12:58:17,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 12:58:17,474 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 12:58:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 12:58:17,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:17,474 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-04 12:58:17,474 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:17,475 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:17,475 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-10-04 12:58:17,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:17,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:17,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:17,476 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:17,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:17,712 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:18,100 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:18,753 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:19,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:19,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:19,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:19,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:19,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:19,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2018-10-04 12:58:19,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 12:58:19,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 12:58:19,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:19,246 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 59 states. [2018-10-04 12:58:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:19,360 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-04 12:58:19,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 12:58:19,361 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 58 [2018-10-04 12:58:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:19,362 INFO L225 Difference]: With dead ends: 62 [2018-10-04 12:58:19,362 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 12:58:19,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 13 [2018-10-04 12:58:19,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 12:58:19,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 12:58:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 12:58:19,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 12:58:19,364 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-04 12:58:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:19,365 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 12:58:19,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 12:58:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 12:58:19,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 12:58:19,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:19,365 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-04 12:58:19,365 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:19,365 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:19,366 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-10-04 12:58:19,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:19,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:19,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:19,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:19,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:19,619 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:20,015 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:20,576 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:20,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:20,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:20,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:58:20,675 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:58:20,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:20,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:20,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:20,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2018-10-04 12:58:20,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 12:58:20,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 12:58:20,809 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:20,809 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 60 states. [2018-10-04 12:58:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:20,889 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 12:58:20,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 12:58:20,889 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 59 [2018-10-04 12:58:20,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:20,890 INFO L225 Difference]: With dead ends: 63 [2018-10-04 12:58:20,890 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 12:58:20,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 14 [2018-10-04 12:58:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 12:58:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 12:58:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 12:58:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 12:58:20,894 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-04 12:58:20,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:20,894 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 12:58:20,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 12:58:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 12:58:20,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 12:58:20,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:20,895 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-04 12:58:20,895 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:20,895 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:20,895 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-10-04 12:58:20,895 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:20,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:20,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:20,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:20,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:21,328 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:21,766 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:22,063 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:22,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:22,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:22,663 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:58:22,707 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 12:58:22,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:22,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:22,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:22,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2018-10-04 12:58:22,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 12:58:22,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 12:58:22,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:22,870 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 61 states. [2018-10-04 12:58:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:22,976 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-04 12:58:22,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 12:58:22,977 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 60 [2018-10-04 12:58:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:22,978 INFO L225 Difference]: With dead ends: 64 [2018-10-04 12:58:22,978 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 12:58:22,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 15 [2018-10-04 12:58:22,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 12:58:22,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 12:58:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 12:58:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 12:58:22,981 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-04 12:58:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:22,981 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 12:58:22,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 12:58:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 12:58:22,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 12:58:22,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:22,982 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-04 12:58:22,982 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:22,982 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:22,982 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-10-04 12:58:22,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:22,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:22,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:22,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:22,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:23,606 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:23,878 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:24,354 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:24,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:24,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:24,723 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:58:24,759 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:58:24,760 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:24,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:24,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:24,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2018-10-04 12:58:24,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 12:58:24,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 12:58:24,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:24,909 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 62 states. [2018-10-04 12:58:25,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:25,010 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 12:58:25,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 12:58:25,011 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 61 [2018-10-04 12:58:25,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:25,011 INFO L225 Difference]: With dead ends: 65 [2018-10-04 12:58:25,012 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 12:58:25,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 16 [2018-10-04 12:58:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 12:58:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 12:58:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 12:58:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 12:58:25,014 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-04 12:58:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:25,014 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 12:58:25,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 12:58:25,015 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 12:58:25,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 12:58:25,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:25,015 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-04 12:58:25,015 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:25,015 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:25,015 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-10-04 12:58:25,015 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:25,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:25,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:25,016 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:25,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:25,553 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:25,954 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:26,435 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:26,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:26,550 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:26,559 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:58:26,607 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 12:58:26,607 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:26,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:26,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:26,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2018-10-04 12:58:26,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 12:58:26,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 12:58:26,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:26,821 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 63 states. [2018-10-04 12:58:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:26,908 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-04 12:58:26,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 12:58:26,909 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 62 [2018-10-04 12:58:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:26,909 INFO L225 Difference]: With dead ends: 66 [2018-10-04 12:58:26,910 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 12:58:26,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 17 [2018-10-04 12:58:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 12:58:26,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 12:58:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 12:58:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 12:58:26,912 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-04 12:58:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:26,912 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 12:58:26,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 12:58:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 12:58:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 12:58:26,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:26,913 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-04 12:58:26,913 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:26,913 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-10-04 12:58:26,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:26,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:26,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:26,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:26,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:28,169 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:28,576 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:29,183 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:29,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:29,771 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:29,778 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:58:29,830 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 12:58:29,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:29,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:29,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:29,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2018-10-04 12:58:29,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 12:58:29,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 12:58:29,978 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:29,978 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 64 states. [2018-10-04 12:58:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:30,107 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 12:58:30,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 12:58:30,108 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 63 [2018-10-04 12:58:30,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:30,108 INFO L225 Difference]: With dead ends: 67 [2018-10-04 12:58:30,108 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 12:58:30,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.2s impTime 18 [2018-10-04 12:58:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 12:58:30,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 12:58:30,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 12:58:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 12:58:30,113 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-04 12:58:30,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:30,113 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 12:58:30,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 12:58:30,113 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 12:58:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 12:58:30,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:30,114 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-04 12:58:30,114 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:30,114 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:30,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-10-04 12:58:30,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:30,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:30,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:30,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:30,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:30,393 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:30,618 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:31,104 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:31,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:31,784 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:31,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:31,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:31,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:31,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2018-10-04 12:58:31,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 12:58:31,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 12:58:31,966 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:31,966 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 65 states. [2018-10-04 12:58:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:32,083 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-04 12:58:32,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 12:58:32,083 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 64 [2018-10-04 12:58:32,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:32,084 INFO L225 Difference]: With dead ends: 68 [2018-10-04 12:58:32,084 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 12:58:32,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 19 [2018-10-04 12:58:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 12:58:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 12:58:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 12:58:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 12:58:32,087 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-04 12:58:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:32,088 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 12:58:32,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 12:58:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 12:58:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 12:58:32,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:32,089 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-04 12:58:32,089 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:32,089 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:32,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-10-04 12:58:32,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:32,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:32,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:32,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:32,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:32,387 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:32,724 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:33,183 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:33,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:33,888 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:33,895 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:58:33,934 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:58:33,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:33,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:34,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:34,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2018-10-04 12:58:34,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 12:58:34,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 12:58:34,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:34,087 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 66 states. [2018-10-04 12:58:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:34,247 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 12:58:34,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 12:58:34,247 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 65 [2018-10-04 12:58:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:34,248 INFO L225 Difference]: With dead ends: 69 [2018-10-04 12:58:34,248 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 12:58:34,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 20 [2018-10-04 12:58:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 12:58:34,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 12:58:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 12:58:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 12:58:34,250 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-04 12:58:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:34,251 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 12:58:34,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 12:58:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 12:58:34,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 12:58:34,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:34,251 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-04 12:58:34,251 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:34,251 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:34,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-10-04 12:58:34,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:34,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:34,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:34,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:34,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:34,670 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:34,980 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:35,522 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:36,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:36,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:36,301 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:58:36,467 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-04 12:58:36,467 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:36,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:36,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:36,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:36,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2018-10-04 12:58:36,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 12:58:36,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 12:58:36,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:36,949 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 67 states. [2018-10-04 12:58:37,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:37,127 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-04 12:58:37,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 12:58:37,128 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 66 [2018-10-04 12:58:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:37,129 INFO L225 Difference]: With dead ends: 70 [2018-10-04 12:58:37,129 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 12:58:37,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.7s impTime 21 [2018-10-04 12:58:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 12:58:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 12:58:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 12:58:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 12:58:37,132 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-04 12:58:37,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:37,132 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 12:58:37,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 12:58:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 12:58:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 12:58:37,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:37,133 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-04 12:58:37,133 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:37,133 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-10-04 12:58:37,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:37,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:37,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:37,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:37,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:37,424 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:38,169 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:38,882 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:39,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:39,279 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:39,294 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:58:39,350 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:58:39,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:39,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:39,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:39,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2018-10-04 12:58:39,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 12:58:39,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 12:58:39,543 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:39,543 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 68 states. [2018-10-04 12:58:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:39,648 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 12:58:39,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 12:58:39,659 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 67 [2018-10-04 12:58:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:39,660 INFO L225 Difference]: With dead ends: 71 [2018-10-04 12:58:39,660 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 12:58:39,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 22 [2018-10-04 12:58:39,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 12:58:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 12:58:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 12:58:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 12:58:39,663 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-04 12:58:39,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:39,663 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 12:58:39,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 12:58:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 12:58:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 12:58:39,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:39,664 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-04 12:58:39,664 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:39,664 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:39,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-10-04 12:58:39,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:39,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:39,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:39,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:39,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:40,014 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:40,311 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:40,603 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:41,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:41,128 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:41,136 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:58:41,190 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 12:58:41,191 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:41,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:41,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:41,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2018-10-04 12:58:41,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 12:58:41,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 12:58:41,366 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:41,366 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 69 states. [2018-10-04 12:58:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:41,484 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-04 12:58:41,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 12:58:41,485 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 68 [2018-10-04 12:58:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:41,486 INFO L225 Difference]: With dead ends: 72 [2018-10-04 12:58:41,486 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 12:58:41,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 23 [2018-10-04 12:58:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 12:58:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 12:58:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 12:58:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 12:58:41,490 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-04 12:58:41,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:41,490 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 12:58:41,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 12:58:41,490 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 12:58:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 12:58:41,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:41,491 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-04 12:58:41,491 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:41,491 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:41,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-10-04 12:58:41,491 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:41,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:41,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:41,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:41,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:41,750 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:42,237 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:43,179 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:44,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:44,187 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:44,194 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:58:44,249 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-04 12:58:44,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:44,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:44,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:44,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2018-10-04 12:58:44,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 12:58:44,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 12:58:44,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:44,728 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 70 states. [2018-10-04 12:58:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:44,880 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 12:58:44,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 12:58:44,881 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 69 [2018-10-04 12:58:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:44,881 INFO L225 Difference]: With dead ends: 73 [2018-10-04 12:58:44,881 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 12:58:44,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.4s impTime 24 [2018-10-04 12:58:44,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 12:58:44,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 12:58:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 12:58:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 12:58:44,884 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-04 12:58:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:44,884 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 12:58:44,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 12:58:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 12:58:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 12:58:44,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:44,884 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-04 12:58:44,885 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:44,885 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:44,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-10-04 12:58:44,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:44,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:44,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:44,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:44,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:45,085 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:45,517 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:46,143 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:47,261 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:58:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:47,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:47,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:47,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:47,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:47,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:47,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2018-10-04 12:58:47,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 12:58:47,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 12:58:47,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:47,474 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 71 states. [2018-10-04 12:58:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:47,626 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-04 12:58:47,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 12:58:47,626 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 70 [2018-10-04 12:58:47,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:47,627 INFO L225 Difference]: With dead ends: 74 [2018-10-04 12:58:47,627 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 12:58:47,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 8 [2018-10-04 12:58:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 12:58:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 12:58:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 12:58:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 12:58:47,630 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-04 12:58:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:47,631 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 12:58:47,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 12:58:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 12:58:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 12:58:47,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:47,632 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-04 12:58:47,632 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:47,632 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-10-04 12:58:47,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:47,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:47,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:47,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:47,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:48,027 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:48,421 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:48,948 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:49,878 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:58:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:49,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:49,945 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:49,952 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:58:49,994 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:58:49,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:49,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:50,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:50,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2018-10-04 12:58:50,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 12:58:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 12:58:50,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:50,161 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 72 states. [2018-10-04 12:58:50,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:50,332 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 12:58:50,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 12:58:50,332 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 71 [2018-10-04 12:58:50,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:50,333 INFO L225 Difference]: With dead ends: 75 [2018-10-04 12:58:50,333 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 12:58:50,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 9 [2018-10-04 12:58:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 12:58:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 12:58:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 12:58:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 12:58:50,337 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-04 12:58:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:50,337 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 12:58:50,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 12:58:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 12:58:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 12:58:50,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:50,338 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-04 12:58:50,338 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:50,338 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:50,338 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-10-04 12:58:50,338 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:50,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:50,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:50,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:50,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:50,606 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:50,971 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:51,638 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:52,802 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:58:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:53,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:53,086 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:53,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:58:53,193 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-04 12:58:53,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:53,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:54,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:54,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2018-10-04 12:58:54,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 12:58:54,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 12:58:54,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:54,188 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 73 states. [2018-10-04 12:58:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:54,394 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-04 12:58:54,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 12:58:54,394 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 72 [2018-10-04 12:58:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:54,395 INFO L225 Difference]: With dead ends: 76 [2018-10-04 12:58:54,396 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 12:58:54,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 2.3s impTime 10 [2018-10-04 12:58:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 12:58:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 12:58:54,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 12:58:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 12:58:54,399 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-04 12:58:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:54,400 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 12:58:54,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 12:58:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 12:58:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 12:58:54,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:54,401 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-04 12:58:54,401 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:54,401 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:54,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-10-04 12:58:54,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:54,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:54,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:54,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:54,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:54,677 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:55,177 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:55,867 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:56,990 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:58:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:57,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:57,218 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:57,227 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:58:57,265 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:58:57,266 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:57,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:57,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:57,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2018-10-04 12:58:57,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 12:58:57,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 12:58:57,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:57,466 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 74 states. [2018-10-04 12:58:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:57,646 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 12:58:57,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 12:58:57,647 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 73 [2018-10-04 12:58:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:57,647 INFO L225 Difference]: With dead ends: 77 [2018-10-04 12:58:57,647 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 12:58:57,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 11 [2018-10-04 12:58:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 12:58:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 12:58:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 12:58:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 12:58:57,650 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-04 12:58:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:57,651 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 12:58:57,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 12:58:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 12:58:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 12:58:57,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:57,651 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-04 12:58:57,652 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:58:57,652 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:57,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-10-04 12:58:57,652 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:57,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:57,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:57,653 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:58:57,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:57,919 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:58:58,560 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:58,762 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:58:59,304 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:58:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:59,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:58:59,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:58:59,472 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:58:59,535 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 12:58:59,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:58:59,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:59,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:58:59,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2018-10-04 12:58:59,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 12:58:59,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 12:58:59,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:59,893 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 75 states. [2018-10-04 12:59:00,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:00,015 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-04 12:59:00,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 12:59:00,016 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 74 [2018-10-04 12:59:00,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:00,017 INFO L225 Difference]: With dead ends: 78 [2018-10-04 12:59:00,017 INFO L226 Difference]: Without dead ends: 76 [2018-10-04 12:59:00,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 12 [2018-10-04 12:59:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-04 12:59:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-04 12:59:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-04 12:59:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-04 12:59:00,021 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-04 12:59:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:00,021 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-04 12:59:00,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 12:59:00,021 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-04 12:59:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-04 12:59:00,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:00,022 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-04 12:59:00,022 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:00,022 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-10-04 12:59:00,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:00,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:00,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:00,023 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:00,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:00,343 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:00,821 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:01,509 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:02,349 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:02,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:02,401 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:02,408 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:59:02,505 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 12:59:02,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:02,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:02,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:02,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2018-10-04 12:59:02,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 12:59:02,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 12:59:02,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:02,687 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 76 states. [2018-10-04 12:59:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:02,805 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 12:59:02,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 12:59:02,806 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 75 [2018-10-04 12:59:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:02,807 INFO L225 Difference]: With dead ends: 79 [2018-10-04 12:59:02,807 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 12:59:02,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 13 [2018-10-04 12:59:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 12:59:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 12:59:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 12:59:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 12:59:02,810 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-04 12:59:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:02,811 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 12:59:02,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 12:59:02,811 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 12:59:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 12:59:02,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:02,811 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-04 12:59:02,812 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:02,812 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:02,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-10-04 12:59:02,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:02,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:02,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:02,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:02,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:03,109 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:03,470 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:03,904 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:04,965 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:05,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:05,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:05,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:59:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:05,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:05,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:05,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2018-10-04 12:59:05,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 12:59:05,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 12:59:05,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:05,602 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 77 states. [2018-10-04 12:59:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:05,790 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-04 12:59:05,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 12:59:05,790 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 76 [2018-10-04 12:59:05,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:05,790 INFO L225 Difference]: With dead ends: 80 [2018-10-04 12:59:05,790 INFO L226 Difference]: Without dead ends: 78 [2018-10-04 12:59:05,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 14 [2018-10-04 12:59:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-04 12:59:05,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-04 12:59:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-04 12:59:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-04 12:59:05,794 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-04 12:59:05,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:05,794 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-04 12:59:05,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 12:59:05,794 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-04 12:59:05,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-04 12:59:05,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:05,795 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-04 12:59:05,795 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:05,796 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:05,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-10-04 12:59:05,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:05,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:05,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:05,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:59:05,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:06,372 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:06,688 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:07,034 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:08,088 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:08,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:08,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:08,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:59:08,851 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:59:08,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:08,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:09,034 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:09,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2018-10-04 12:59:09,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 12:59:09,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 12:59:09,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:09,035 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 78 states. [2018-10-04 12:59:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:09,211 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 12:59:09,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 12:59:09,212 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 77 [2018-10-04 12:59:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:09,213 INFO L225 Difference]: With dead ends: 81 [2018-10-04 12:59:09,213 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 12:59:09,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.5s impTime 15 [2018-10-04 12:59:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 12:59:09,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 12:59:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 12:59:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 12:59:09,217 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-04 12:59:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:09,217 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 12:59:09,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 12:59:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 12:59:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 12:59:09,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:09,218 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-04 12:59:09,218 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:09,219 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-10-04 12:59:09,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:09,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:09,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:09,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:09,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:09,492 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:09,807 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:10,134 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:11,187 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:11,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:11,740 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:11,748 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:59:11,812 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-04 12:59:11,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:11,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:12,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:12,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2018-10-04 12:59:12,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 12:59:12,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 12:59:12,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:12,049 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 79 states. [2018-10-04 12:59:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:12,219 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-04 12:59:12,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 12:59:12,219 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 78 [2018-10-04 12:59:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:12,220 INFO L225 Difference]: With dead ends: 82 [2018-10-04 12:59:12,220 INFO L226 Difference]: Without dead ends: 80 [2018-10-04 12:59:12,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 16 [2018-10-04 12:59:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-04 12:59:12,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-04 12:59:12,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-04 12:59:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-04 12:59:12,224 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-04 12:59:12,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:12,224 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-04 12:59:12,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 12:59:12,224 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-04 12:59:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-04 12:59:12,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:12,224 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-04 12:59:12,225 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:12,225 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:12,225 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-10-04 12:59:12,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:12,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:12,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:12,226 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:12,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:12,457 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:12,640 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:13,073 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:14,362 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:14,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:14,987 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:14,994 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:59:15,038 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:59:15,038 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:15,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:15,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:15,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2018-10-04 12:59:15,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 12:59:15,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 12:59:15,214 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:15,214 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 80 states. [2018-10-04 12:59:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:16,484 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 12:59:16,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 12:59:16,485 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 79 [2018-10-04 12:59:16,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:16,485 INFO L225 Difference]: With dead ends: 83 [2018-10-04 12:59:16,485 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 12:59:16,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.4s impTime 17 [2018-10-04 12:59:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 12:59:16,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 12:59:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 12:59:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 12:59:16,488 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-04 12:59:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:16,488 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 12:59:16,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 12:59:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 12:59:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 12:59:16,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:16,489 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-04 12:59:16,489 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:16,489 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-10-04 12:59:16,489 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:16,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:16,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:16,490 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:16,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:16,745 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:17,194 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:17,838 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:18,931 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:19,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:19,050 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:19,068 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:59:19,138 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-04 12:59:19,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:19,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:19,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:19,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2018-10-04 12:59:19,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 12:59:19,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 12:59:19,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:19,332 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 81 states. [2018-10-04 12:59:19,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:19,461 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-04 12:59:19,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 12:59:19,461 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 80 [2018-10-04 12:59:19,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:19,462 INFO L225 Difference]: With dead ends: 84 [2018-10-04 12:59:19,462 INFO L226 Difference]: Without dead ends: 82 [2018-10-04 12:59:19,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 18 [2018-10-04 12:59:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-04 12:59:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-04 12:59:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-04 12:59:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-04 12:59:19,465 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-04 12:59:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:19,465 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-04 12:59:19,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 12:59:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-04 12:59:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-04 12:59:19,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:19,466 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-04 12:59:19,466 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:19,467 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:19,467 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-10-04 12:59:19,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:19,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:19,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:19,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:19,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:19,719 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:20,130 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:20,319 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:20,833 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:21,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:21,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:21,276 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:59:21,338 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-04 12:59:21,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:21,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:21,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:21,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2018-10-04 12:59:21,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 12:59:21,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 12:59:21,582 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:21,583 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 82 states. [2018-10-04 12:59:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:21,718 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 12:59:21,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 12:59:21,718 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 81 [2018-10-04 12:59:21,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:21,719 INFO L225 Difference]: With dead ends: 85 [2018-10-04 12:59:21,719 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 12:59:21,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 19 [2018-10-04 12:59:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 12:59:21,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 12:59:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 12:59:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 12:59:21,723 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-04 12:59:21,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:21,723 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 12:59:21,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 12:59:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 12:59:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 12:59:21,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:21,724 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-04 12:59:21,724 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:21,724 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:21,724 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-10-04 12:59:21,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:21,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:21,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:21,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:21,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:22,039 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:22,497 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:23,143 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:24,395 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:25,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:25,249 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:25,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:59:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:25,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:25,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:25,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2018-10-04 12:59:25,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 12:59:25,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 12:59:25,528 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:25,528 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 83 states. [2018-10-04 12:59:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:25,719 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-04 12:59:25,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 12:59:25,719 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 82 [2018-10-04 12:59:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:25,720 INFO L225 Difference]: With dead ends: 86 [2018-10-04 12:59:25,720 INFO L226 Difference]: Without dead ends: 84 [2018-10-04 12:59:25,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.1s impTime 20 [2018-10-04 12:59:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-04 12:59:25,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-04 12:59:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-04 12:59:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-04 12:59:25,723 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-04 12:59:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:25,724 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-04 12:59:25,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 12:59:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-04 12:59:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-04 12:59:25,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:25,725 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-04 12:59:25,725 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:25,725 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:25,725 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-10-04 12:59:25,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:25,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:25,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:25,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:59:25,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:26,267 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:26,604 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:27,166 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:28,253 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:28,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:28,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:28,597 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:59:28,642 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:59:28,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:28,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:29,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:29,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2018-10-04 12:59:29,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 12:59:29,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 12:59:29,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:29,727 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 84 states. [2018-10-04 12:59:29,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:29,868 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 12:59:29,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 12:59:29,868 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 83 [2018-10-04 12:59:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:29,869 INFO L225 Difference]: With dead ends: 87 [2018-10-04 12:59:29,869 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 12:59:29,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 2.4s impTime 21 [2018-10-04 12:59:29,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 12:59:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 12:59:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 12:59:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 12:59:29,871 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-04 12:59:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:29,871 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 12:59:29,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 12:59:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 12:59:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 12:59:29,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:29,873 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-04 12:59:29,873 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:29,874 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-10-04 12:59:29,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:29,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:29,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:29,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:29,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:30,066 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:30,346 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:30,845 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:31,965 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:32,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:32,808 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:32,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:59:32,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-04 12:59:32,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:32,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:33,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:33,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2018-10-04 12:59:33,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 12:59:33,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 12:59:33,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:33,070 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 85 states. [2018-10-04 12:59:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:33,266 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-04 12:59:33,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 12:59:33,266 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 84 [2018-10-04 12:59:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:33,267 INFO L225 Difference]: With dead ends: 88 [2018-10-04 12:59:33,267 INFO L226 Difference]: Without dead ends: 86 [2018-10-04 12:59:33,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.3s impTime 22 [2018-10-04 12:59:33,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-04 12:59:33,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-04 12:59:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-04 12:59:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-04 12:59:33,270 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-04 12:59:33,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:33,270 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-04 12:59:33,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 12:59:33,270 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-04 12:59:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-04 12:59:33,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:33,271 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-04 12:59:33,271 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:33,271 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:33,271 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-10-04 12:59:33,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:33,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:33,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:33,272 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:33,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:33,879 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:34,333 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:34,915 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:35,960 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:36,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:36,212 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:36,220 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:59:36,272 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:59:36,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:36,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:36,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:36,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2018-10-04 12:59:36,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 12:59:36,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 12:59:36,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:36,588 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 86 states. [2018-10-04 12:59:36,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:36,758 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 12:59:36,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 12:59:36,758 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 85 [2018-10-04 12:59:36,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:36,759 INFO L225 Difference]: With dead ends: 89 [2018-10-04 12:59:36,759 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 12:59:36,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.5s impTime 23 [2018-10-04 12:59:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 12:59:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 12:59:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 12:59:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 12:59:36,763 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-04 12:59:36,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:36,763 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 12:59:36,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 12:59:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 12:59:36,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 12:59:36,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:36,764 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-04 12:59:36,764 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:36,764 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:36,764 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-10-04 12:59:36,764 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:36,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:36,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:36,765 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:36,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:37,000 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:37,428 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:38,067 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:39,225 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:40,372 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:40,372 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:40,379 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:59:40,451 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-04 12:59:40,451 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:40,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:40,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:40,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2018-10-04 12:59:40,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 12:59:40,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 12:59:40,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:40,636 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 87 states. [2018-10-04 12:59:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:40,867 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-04 12:59:40,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 12:59:40,867 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 86 [2018-10-04 12:59:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:40,868 INFO L225 Difference]: With dead ends: 90 [2018-10-04 12:59:40,868 INFO L226 Difference]: Without dead ends: 88 [2018-10-04 12:59:40,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.2s impTime 24 [2018-10-04 12:59:40,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-04 12:59:40,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-04 12:59:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-04 12:59:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-04 12:59:40,871 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-04 12:59:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:40,871 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-04 12:59:40,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 12:59:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-04 12:59:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-04 12:59:40,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:40,872 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-04 12:59:40,872 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:40,872 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:40,872 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-10-04 12:59:40,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:40,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:40,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:40,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:40,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:41,254 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:41,527 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:41,807 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:42,410 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:43,257 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:43,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:43,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:43,278 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:59:43,355 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 12:59:43,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:43,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:43,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:43,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2018-10-04 12:59:43,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 12:59:43,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 12:59:43,537 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:43,537 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 88 states. [2018-10-04 12:59:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:43,713 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 12:59:43,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 12:59:43,713 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 87 [2018-10-04 12:59:43,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:43,714 INFO L225 Difference]: With dead ends: 91 [2018-10-04 12:59:43,714 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 12:59:43,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime 8 [2018-10-04 12:59:43,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 12:59:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 12:59:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 12:59:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 12:59:43,717 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-04 12:59:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:43,717 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 12:59:43,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 12:59:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 12:59:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 12:59:43,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:43,718 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-04 12:59:43,718 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:43,718 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:43,718 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-10-04 12:59:43,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:43,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:43,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:43,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:43,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:43,970 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:44,605 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:45,244 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:45,687 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:46,103 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:46,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:46,145 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:46,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:59:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:46,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:46,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:46,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2018-10-04 12:59:46,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 12:59:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 12:59:46,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:46,381 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 89 states. [2018-10-04 12:59:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:46,534 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-04 12:59:46,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 12:59:46,535 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 88 [2018-10-04 12:59:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:46,536 INFO L225 Difference]: With dead ends: 92 [2018-10-04 12:59:46,536 INFO L226 Difference]: Without dead ends: 90 [2018-10-04 12:59:46,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 9 [2018-10-04 12:59:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-04 12:59:46,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-04 12:59:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-04 12:59:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-04 12:59:46,539 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-04 12:59:46,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:46,540 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-04 12:59:46,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 12:59:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-04 12:59:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-04 12:59:46,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:46,541 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-04 12:59:46,541 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:46,541 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:46,541 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-10-04 12:59:46,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:46,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:46,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:46,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:59:46,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:46,725 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:47,032 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:47,569 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:48,608 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:49,145 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:49,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:49,212 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:49,219 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:59:49,269 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:59:49,269 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:49,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:49,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:49,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2018-10-04 12:59:49,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 12:59:49,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 12:59:49,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:49,580 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 90 states. [2018-10-04 12:59:49,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:49,745 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 12:59:49,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 12:59:49,746 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 89 [2018-10-04 12:59:49,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:49,746 INFO L225 Difference]: With dead ends: 93 [2018-10-04 12:59:49,746 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 12:59:49,746 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 10 [2018-10-04 12:59:49,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 12:59:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 12:59:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 12:59:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 12:59:49,749 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-04 12:59:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:49,749 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 12:59:49,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 12:59:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 12:59:49,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 12:59:49,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:49,749 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-04 12:59:49,749 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:49,750 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:49,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-10-04 12:59:49,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:49,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:49,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:49,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:49,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:49,980 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:50,173 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:50,646 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:51,703 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:52,751 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:52,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:52,784 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:52,793 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:59:52,875 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-04 12:59:52,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:52,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:53,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:53,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2018-10-04 12:59:53,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 12:59:53,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 12:59:53,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:53,069 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 91 states. [2018-10-04 12:59:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:53,247 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-04 12:59:53,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 12:59:53,248 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 90 [2018-10-04 12:59:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:53,249 INFO L225 Difference]: With dead ends: 94 [2018-10-04 12:59:53,249 INFO L226 Difference]: Without dead ends: 92 [2018-10-04 12:59:53,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.6s impTime 11 [2018-10-04 12:59:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-04 12:59:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-04 12:59:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-04 12:59:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-04 12:59:53,252 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-04 12:59:53,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:53,252 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-04 12:59:53,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 12:59:53,253 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-04 12:59:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-04 12:59:53,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:53,253 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-04 12:59:53,254 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:53,254 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:53,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-10-04 12:59:53,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:53,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:53,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:53,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:53,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:53,846 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:54,068 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:54,749 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:55,792 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:56,712 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:56,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:56,762 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:56,769 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:59:56,823 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:59:56,824 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:59:56,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:59:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:57,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:59:57,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2018-10-04 12:59:57,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 12:59:57,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 12:59:57,022 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:59:57,022 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 92 states. [2018-10-04 12:59:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:59:57,197 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 12:59:57,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 12:59:57,197 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 91 [2018-10-04 12:59:57,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:59:57,198 INFO L225 Difference]: With dead ends: 95 [2018-10-04 12:59:57,198 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 12:59:57,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.0s impTime 12 [2018-10-04 12:59:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 12:59:57,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 12:59:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 12:59:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 12:59:57,200 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-04 12:59:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:59:57,200 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 12:59:57,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 12:59:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 12:59:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 12:59:57,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:59:57,201 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-04 12:59:57,201 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:59:57,201 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:59:57,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-10-04 12:59:57,201 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:59:57,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:59:57,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:57,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:59:57,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:59:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:59:57,416 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:59:57,807 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:58,408 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:59:59,514 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:59,829 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:59:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:59:59,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:59:59,945 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:59:59,953 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 13:00:00,071 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-04 13:00:00,071 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:00,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:00,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:00,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2018-10-04 13:00:00,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 13:00:00,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 13:00:00,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:00,381 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 93 states. [2018-10-04 13:00:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:00,571 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-04 13:00:00,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 13:00:00,572 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 92 [2018-10-04 13:00:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:00,572 INFO L225 Difference]: With dead ends: 96 [2018-10-04 13:00:00,572 INFO L226 Difference]: Without dead ends: 94 [2018-10-04 13:00:00,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.3s impTime 13 [2018-10-04 13:00:00,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-04 13:00:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-04 13:00:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-04 13:00:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-04 13:00:00,574 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-04 13:00:00,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:00,575 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-04 13:00:00,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 13:00:00,575 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-04 13:00:00,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-04 13:00:00,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:00,575 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-04 13:00:00,576 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:00,576 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:00,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-10-04 13:00:00,576 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:00,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:00,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:00,577 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:00,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:00,781 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:01,179 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:01,655 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:01,958 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:02,533 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:02,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:02,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:02,801 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 13:00:02,883 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-04 13:00:02,883 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:02,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:03,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:03,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2018-10-04 13:00:03,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 13:00:03,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 13:00:03,081 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:03,081 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 94 states. [2018-10-04 13:00:03,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:03,246 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 13:00:03,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 13:00:03,247 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 93 [2018-10-04 13:00:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:03,247 INFO L225 Difference]: With dead ends: 97 [2018-10-04 13:00:03,248 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 13:00:03,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 14 [2018-10-04 13:00:03,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 13:00:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 13:00:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 13:00:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 13:00:03,251 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-04 13:00:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:03,251 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 13:00:03,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 13:00:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 13:00:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 13:00:03,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:03,252 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-04 13:00:03,252 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:03,252 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-10-04 13:00:03,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:03,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:03,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:03,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:03,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:03,468 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:03,717 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:04,174 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:05,104 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:06,188 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:06,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:06,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:06,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 13:00:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:06,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:06,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:06,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2018-10-04 13:00:06,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 13:00:06,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 13:00:06,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:06,948 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 95 states. [2018-10-04 13:00:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:07,193 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-04 13:00:07,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 13:00:07,194 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 94 [2018-10-04 13:00:07,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:07,194 INFO L225 Difference]: With dead ends: 98 [2018-10-04 13:00:07,194 INFO L226 Difference]: Without dead ends: 96 [2018-10-04 13:00:07,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.0s impTime 15 [2018-10-04 13:00:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-04 13:00:07,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-04 13:00:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-04 13:00:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-04 13:00:07,197 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-04 13:00:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:07,197 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-04 13:00:07,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 13:00:07,197 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-04 13:00:07,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-04 13:00:07,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:07,198 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-04 13:00:07,198 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:07,198 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:07,198 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-10-04 13:00:07,199 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:07,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:07,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:07,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 13:00:07,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:07,421 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:07,857 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:08,149 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:09,214 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:10,519 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:11,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:11,195 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:11,202 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 13:00:11,254 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 13:00:11,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:11,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:11,517 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:11,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2018-10-04 13:00:11,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 13:00:11,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 13:00:11,519 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:11,519 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 96 states. [2018-10-04 13:00:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:11,778 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 13:00:11,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 13:00:11,779 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 95 [2018-10-04 13:00:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:11,779 INFO L225 Difference]: With dead ends: 99 [2018-10-04 13:00:11,779 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 13:00:11,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time 3.5s impTime 16 [2018-10-04 13:00:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 13:00:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 13:00:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 13:00:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 13:00:11,782 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-04 13:00:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:11,782 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 13:00:11,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 13:00:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 13:00:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 13:00:11,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:11,782 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-04 13:00:11,783 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:11,783 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:11,783 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-10-04 13:00:11,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:11,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:11,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:11,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:11,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:12,218 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:12,609 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:13,163 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:13,445 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:13,983 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:14,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:14,357 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:14,365 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 13:00:14,451 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-04 13:00:14,451 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:14,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:14,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:14,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2018-10-04 13:00:14,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 13:00:14,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 13:00:14,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:14,682 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 97 states. [2018-10-04 13:00:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:14,896 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-04 13:00:14,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 13:00:14,897 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 96 [2018-10-04 13:00:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:14,897 INFO L225 Difference]: With dead ends: 100 [2018-10-04 13:00:14,897 INFO L226 Difference]: Without dead ends: 98 [2018-10-04 13:00:14,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime 17 [2018-10-04 13:00:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-04 13:00:14,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-04 13:00:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-04 13:00:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-04 13:00:14,899 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-04 13:00:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:14,900 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-04 13:00:14,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 13:00:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-04 13:00:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-04 13:00:14,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:14,900 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-04 13:00:14,900 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:14,901 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:14,901 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-10-04 13:00:14,901 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:14,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:14,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:14,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:14,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:15,239 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:15,623 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:16,261 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:17,304 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:18,580 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:19,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:19,429 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:19,437 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 13:00:19,494 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 13:00:19,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:19,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:19,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:19,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2018-10-04 13:00:19,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 13:00:19,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 13:00:19,701 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:19,701 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 98 states. [2018-10-04 13:00:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:20,027 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 13:00:20,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 13:00:20,028 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 97 [2018-10-04 13:00:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:20,029 INFO L225 Difference]: With dead ends: 101 [2018-10-04 13:00:20,029 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 13:00:20,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 4.0s impTime 18 [2018-10-04 13:00:20,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 13:00:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 13:00:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 13:00:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 13:00:20,031 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-04 13:00:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:20,031 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 13:00:20,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 13:00:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 13:00:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 13:00:20,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:20,032 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-04 13:00:20,032 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:20,032 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:20,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-10-04 13:00:20,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:20,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:20,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:20,033 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:20,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:20,247 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:20,659 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:20,998 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:21,376 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:22,007 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:22,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:22,534 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:22,542 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 13:00:22,630 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-04 13:00:22,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:22,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:22,838 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:22,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2018-10-04 13:00:22,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 13:00:22,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 13:00:22,839 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:22,839 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 99 states. [2018-10-04 13:00:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:23,024 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-04 13:00:23,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 13:00:23,024 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 98 [2018-10-04 13:00:23,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:23,025 INFO L225 Difference]: With dead ends: 102 [2018-10-04 13:00:23,025 INFO L226 Difference]: Without dead ends: 100 [2018-10-04 13:00:23,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 19 [2018-10-04 13:00:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-04 13:00:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-04 13:00:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-04 13:00:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-04 13:00:23,028 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-04 13:00:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:23,028 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-04 13:00:23,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 13:00:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-04 13:00:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-04 13:00:23,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:23,029 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-04 13:00:23,029 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:23,029 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:23,030 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-10-04 13:00:23,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:23,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:23,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:23,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:23,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:23,284 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:23,496 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:23,884 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:24,929 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:26,272 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:26,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:26,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:26,597 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 13:00:26,687 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 13:00:26,688 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:26,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:26,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:26,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2018-10-04 13:00:26,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 13:00:26,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 13:00:26,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:26,897 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 100 states. [2018-10-04 13:00:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:27,124 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 13:00:27,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 13:00:27,124 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 99 [2018-10-04 13:00:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:27,125 INFO L225 Difference]: With dead ends: 103 [2018-10-04 13:00:27,125 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 13:00:27,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.1s impTime 20 [2018-10-04 13:00:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 13:00:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 13:00:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 13:00:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 13:00:27,128 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-04 13:00:27,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:27,128 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 13:00:27,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 13:00:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 13:00:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 13:00:27,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:27,129 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-04 13:00:27,129 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:27,129 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:27,129 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-10-04 13:00:27,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:27,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:27,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:27,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:27,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:27,401 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:27,847 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:28,508 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:29,559 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:30,832 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:31,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:31,952 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:31,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 13:00:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:32,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:32,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:32,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2018-10-04 13:00:32,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 13:00:32,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 13:00:32,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:32,227 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 101 states. [2018-10-04 13:00:32,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:32,575 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-04 13:00:32,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 13:00:32,575 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 100 [2018-10-04 13:00:32,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:32,576 INFO L225 Difference]: With dead ends: 104 [2018-10-04 13:00:32,577 INFO L226 Difference]: Without dead ends: 102 [2018-10-04 13:00:32,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.3s impTime 21 [2018-10-04 13:00:32,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-04 13:00:32,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-04 13:00:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-04 13:00:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-04 13:00:32,579 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-04 13:00:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:32,580 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-04 13:00:32,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 13:00:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-04 13:00:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-04 13:00:32,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:32,581 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-04 13:00:32,581 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:32,581 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:32,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-10-04 13:00:32,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:32,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:32,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:32,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 13:00:32,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:32,840 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:33,033 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:33,382 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:34,071 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:35,010 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:36,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:36,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:36,044 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 13:00:36,100 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 13:00:36,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:36,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:36,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:36,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2018-10-04 13:00:36,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 13:00:36,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 13:00:36,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:36,330 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 102 states. [2018-10-04 13:00:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:36,601 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 13:00:36,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 13:00:36,601 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 101 [2018-10-04 13:00:36,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:36,602 INFO L225 Difference]: With dead ends: 105 [2018-10-04 13:00:36,602 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 13:00:36,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.0s impTime 22 [2018-10-04 13:00:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 13:00:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 13:00:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 13:00:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 13:00:36,605 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-04 13:00:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:36,605 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 13:00:36,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 13:00:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 13:00:36,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 13:00:36,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:36,606 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-04 13:00:36,606 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:36,606 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:36,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-10-04 13:00:36,606 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:36,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:36,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:36,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:36,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:36,837 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:37,263 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:37,496 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:37,929 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:38,624 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:39,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:39,607 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:39,614 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 13:00:39,708 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-04 13:00:39,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:39,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:39,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:39,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2018-10-04 13:00:39,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 13:00:39,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 13:00:39,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:39,921 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 103 states. [2018-10-04 13:00:40,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:40,170 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-04 13:00:40,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 13:00:40,170 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 102 [2018-10-04 13:00:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:40,171 INFO L225 Difference]: With dead ends: 106 [2018-10-04 13:00:40,171 INFO L226 Difference]: Without dead ends: 104 [2018-10-04 13:00:40,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.5s impTime 23 [2018-10-04 13:00:40,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-04 13:00:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-04 13:00:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-04 13:00:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-04 13:00:40,176 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-04 13:00:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:40,176 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-04 13:00:40,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 13:00:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-04 13:00:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-04 13:00:40,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:40,177 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-04 13:00:40,177 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:40,177 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:40,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-10-04 13:00:40,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:40,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:40,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:40,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:40,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:40,414 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:40,853 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:41,255 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:41,593 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:42,195 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:43,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:43,221 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:43,228 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 13:00:43,290 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 13:00:43,290 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:43,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:43,508 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:43,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2018-10-04 13:00:43,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 13:00:43,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 13:00:43,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:43,510 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 104 states. [2018-10-04 13:00:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:43,760 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 13:00:43,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 13:00:43,760 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 103 [2018-10-04 13:00:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:43,761 INFO L225 Difference]: With dead ends: 107 [2018-10-04 13:00:43,761 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 13:00:43,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.6s impTime 24 [2018-10-04 13:00:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 13:00:43,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 13:00:43,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 13:00:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 13:00:43,764 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-04 13:00:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:43,765 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 13:00:43,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 13:00:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 13:00:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 13:00:43,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:43,765 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-04 13:00:43,766 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:43,766 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:43,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-10-04 13:00:43,766 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:43,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:43,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:43,767 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:43,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:44,012 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:44,460 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:44,765 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:45,194 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:45,885 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:47,087 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:47,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:47,106 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:47,114 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 13:00:47,219 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-04 13:00:47,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:47,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:47,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:47,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 104 [2018-10-04 13:00:47,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 13:00:47,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 13:00:47,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:47,437 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 105 states. [2018-10-04 13:00:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:47,697 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-04 13:00:47,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 13:00:47,698 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 104 [2018-10-04 13:00:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:47,699 INFO L225 Difference]: With dead ends: 108 [2018-10-04 13:00:47,699 INFO L226 Difference]: Without dead ends: 106 [2018-10-04 13:00:47,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.7s impTime 9 [2018-10-04 13:00:47,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-04 13:00:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-04 13:00:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-04 13:00:47,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-04 13:00:47,702 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-04 13:00:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:47,702 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-04 13:00:47,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 13:00:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-04 13:00:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-04 13:00:47,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:47,703 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-04 13:00:47,703 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:47,704 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:47,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-10-04 13:00:47,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:47,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:47,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:47,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:47,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:47,997 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:48,249 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:48,543 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:49,171 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:50,057 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:51,389 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:51,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:51,502 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:51,509 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 13:00:51,604 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-04 13:00:51,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:00:51,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:51,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:51,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 105 [2018-10-04 13:00:51,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 13:00:51,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 13:00:51,978 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:51,978 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 106 states. [2018-10-04 13:00:52,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:52,274 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 13:00:52,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 13:00:52,275 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 105 [2018-10-04 13:00:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:52,275 INFO L225 Difference]: With dead ends: 109 [2018-10-04 13:00:52,275 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 13:00:52,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 3.2s impTime 9 [2018-10-04 13:00:52,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 13:00:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 13:00:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 13:00:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 13:00:52,278 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-04 13:00:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:52,279 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 13:00:52,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 13:00:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 13:00:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 13:00:52,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:52,280 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-04 13:00:52,280 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:52,280 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:52,280 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-10-04 13:00:52,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:52,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:52,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:52,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:00:52,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:52,560 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:52,986 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:53,601 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:54,612 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:55,856 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:57,406 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:00:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:57,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:00:57,616 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:00:57,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 13:00:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:57,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:00:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:00:57,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:00:57,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 106 [2018-10-04 13:00:57,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 13:00:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 13:00:57,915 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:00:57,915 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 107 states. [2018-10-04 13:00:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:00:58,278 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-04 13:00:58,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 13:00:58,278 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 106 [2018-10-04 13:00:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:00:58,279 INFO L225 Difference]: With dead ends: 110 [2018-10-04 13:00:58,279 INFO L226 Difference]: Without dead ends: 108 [2018-10-04 13:00:58,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time 4.8s impTime 10 [2018-10-04 13:00:58,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-04 13:00:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-04 13:00:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-04 13:00:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-04 13:00:58,283 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-04 13:00:58,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:00:58,283 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-04 13:00:58,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 13:00:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-04 13:00:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-04 13:00:58,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:00:58,284 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-04 13:00:58,284 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:00:58,284 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:00:58,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-10-04 13:00:58,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:00:58,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:00:58,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:58,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 13:00:58,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:00:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:00:58,636 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:00:58,997 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:00:59,309 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:01:00,347 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:01,615 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:02,640 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:01:02,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:01:02,697 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:01:02,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 13:01:02,759 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 13:01:02,760 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:01:02,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:01:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:01:03,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:01:03,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 107 [2018-10-04 13:01:03,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 13:01:03,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 13:01:03,118 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:01:03,118 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 108 states. [2018-10-04 13:01:03,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:01:03,374 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 13:01:03,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 13:01:03,374 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 107 [2018-10-04 13:01:03,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:01:03,375 INFO L225 Difference]: With dead ends: 111 [2018-10-04 13:01:03,375 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 13:01:03,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 3.8s impTime 11 [2018-10-04 13:01:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 13:01:03,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 13:01:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 13:01:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 13:01:03,378 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-04 13:01:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:01:03,378 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 13:01:03,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 13:01:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 13:01:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 13:01:03,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:01:03,380 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-04 13:01:03,380 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:01:03,380 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:01:03,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-10-04 13:01:03,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:01:03,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:01:03,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:01:03,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:01:03,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:01:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:01:03,639 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:01:04,032 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:01:04,671 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:01:04,971 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:05,462 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:06,214 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:01:06,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:01:06,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:01:06,443 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 13:01:06,546 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-04 13:01:06,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:01:06,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:01:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:01:06,768 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:01:06,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 108 [2018-10-04 13:01:06,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 13:01:06,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 13:01:06,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:01:06,769 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 109 states. [2018-10-04 13:01:06,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:01:06,987 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-04 13:01:06,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 13:01:06,988 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 108 [2018-10-04 13:01:06,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:01:06,988 INFO L225 Difference]: With dead ends: 112 [2018-10-04 13:01:06,988 INFO L226 Difference]: Without dead ends: 110 [2018-10-04 13:01:06,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.5s impTime 12 [2018-10-04 13:01:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-04 13:01:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-04 13:01:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-04 13:01:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-04 13:01:06,991 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-04 13:01:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:01:06,991 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-04 13:01:06,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 13:01:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-04 13:01:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-04 13:01:06,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:01:06,992 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-04 13:01:06,992 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:01:06,992 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:01:06,992 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-10-04 13:01:06,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:01:06,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:01:06,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:01:06,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:01:06,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:01:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:01:07,274 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:01:07,720 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:01:08,370 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:01:09,408 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:10,674 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:12,228 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:01:12,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:01:12,731 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:01:12,739 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 13:01:12,804 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 13:01:12,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:01:12,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:01:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:01:13,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:01:13,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 109 [2018-10-04 13:01:13,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 13:01:13,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 13:01:13,036 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:01:13,037 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 110 states. [2018-10-04 13:01:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:01:13,400 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 13:01:13,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 13:01:13,400 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 109 [2018-10-04 13:01:13,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:01:13,401 INFO L225 Difference]: With dead ends: 113 [2018-10-04 13:01:13,401 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 13:01:13,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8s Time 5.2s impTime 13 [2018-10-04 13:01:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 13:01:13,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 13:01:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 13:01:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 13:01:13,404 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-04 13:01:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:01:13,404 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 13:01:13,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 13:01:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 13:01:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 13:01:13,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:01:13,405 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-04 13:01:13,405 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:01:13,405 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:01:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-10-04 13:01:13,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:01:13,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:01:13,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:01:13,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:01:13,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:01:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:01:13,691 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:01:14,145 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:01:14,784 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:01:15,491 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:15,817 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:16,825 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:01:17,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 13:01:17,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 13:01:17,444 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 13:01:17,549 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-04 13:01:17,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 13:01:17,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 13:01:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 13:01:17,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 13:01:17,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 110 [2018-10-04 13:01:17,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-04 13:01:17,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-04 13:01:17,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 13:01:17,778 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 111 states. [2018-10-04 13:01:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 13:01:18,071 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-04 13:01:18,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 13:01:18,071 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 110 [2018-10-04 13:01:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 13:01:18,072 INFO L225 Difference]: With dead ends: 114 [2018-10-04 13:01:18,072 INFO L226 Difference]: Without dead ends: 112 [2018-10-04 13:01:18,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time 3.5s impTime 14 [2018-10-04 13:01:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-04 13:01:18,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-04 13:01:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-04 13:01:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-04 13:01:18,075 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-04 13:01:18,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 13:01:18,075 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-04 13:01:18,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-04 13:01:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-04 13:01:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-04 13:01:18,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 13:01:18,076 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-04 13:01:18,076 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 13:01:18,076 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 13:01:18,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-10-04 13:01:18,076 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 13:01:18,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 13:01:18,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:01:18,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 13:01:18,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 13:01:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 13:01:18,486 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 13:01:18,880 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:01:19,529 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 13:01:20,564 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:21,837 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 Received shutdown request... [2018-10-04 13:01:23,393 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 13:01:23,395 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 13:01:23,400 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 13:01:23,400 INFO L202 PluginConnector]: Adding new model LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 01:01:23 BoogieIcfgContainer [2018-10-04 13:01:23,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 13:01:23,401 INFO L168 Benchmark]: Toolchain (without parser) took 238579.23 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -124.3 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 240.1 MB). Peak memory consumption was 115.9 MB. Max. memory is 7.1 GB. [2018-10-04 13:01:23,403 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 13:01:23,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.75 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 13:01:23,404 INFO L168 Benchmark]: Boogie Preprocessor took 25.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 13:01:23,404 INFO L168 Benchmark]: RCFGBuilder took 321.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 13:01:23,405 INFO L168 Benchmark]: TraceAbstraction took 238182.36 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -124.3 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 219.0 MB). Peak memory consumption was 94.7 MB. Max. memory is 7.1 GB. [2018-10-04 13:01:23,408 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 0.23 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 44.75 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 25.60 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 321.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238182.36 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -124.3 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 219.0 MB). Peak memory consumption was 94.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while BasicCegarLoop was analyzing trace of length 112 with TraceHistMax 108, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 110 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 238.1s OverallTime, 109 OverallIterations, 108 TraceHistogramMax, 16.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 326 SDtfs, 2 SDslu, 4162 SDs, 0 SdLazy, 10202 SolverSat, 153 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11986 GetRequests, 5993 SyntacticMatches, 0 SemanticMatches, 5993 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 200.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=108, 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, 108 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 205.1s InterpolantComputationTime, 12201 NumberOfCodeBlocks, 12201 NumberOfCodeBlocksAsserted, 1718 NumberOfCheckSat, 11986 ConstructedInterpolants, 0 QuantifiedInterpolants, 4304404 SizeOfPredicates, 214 NumberOfNonLiveVariables, 24075 ConjunctsInSsa, 5992 ConjunctsInUnsatCore, 215 InterpolantComputations, 1 PerfectInterpolantSequences, 0/419868 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/LuxembourgOctopus.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_13-01-23-417.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LuxembourgOctopus.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_13-01-23-417.csv Completed graceful shutdown