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/MonadicInvariant01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f-m [2018-10-04 14:37:10,524 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 14:37:10,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 14:37:10,546 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 14:37:10,547 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 14:37:10,548 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 14:37:10,549 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 14:37:10,553 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 14:37:10,555 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 14:37:10,556 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 14:37:10,559 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 14:37:10,559 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 14:37:10,560 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 14:37:10,561 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 14:37:10,562 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 14:37:10,564 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 14:37:10,565 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 14:37:10,569 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 14:37:10,574 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 14:37:10,575 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 14:37:10,576 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 14:37:10,582 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 14:37:10,588 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 14:37:10,601 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 14:37:10,630 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 14:37:10,631 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 14:37:10,632 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 14:37:10,632 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 14:37:10,636 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 14:37:10,636 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 14:37:10,636 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 14:37:10,636 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 14:37:10,637 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 14:37:10,638 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 14:37:10,638 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 14:37:10,638 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 14:37:10,638 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 14:37:10,639 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 14:37:10,639 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 14:37:10,639 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 14:37:10,639 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 14:37:10,639 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 14:37:10,639 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 14:37:10,640 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 14:37:10,641 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 14:37:10,641 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 14:37:10,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:37:10,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 14:37:10,642 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 14:37:10,642 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 14:37:10,642 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 14:37:10,642 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 14:37:10,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 14:37:10,643 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 14:37:10,643 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 14:37:10,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 14:37:10,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 14:37:10,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 14:37:10,729 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 14:37:10,730 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 14:37:10,731 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl [2018-10-04 14:37:10,731 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/MonadicInvariant01.bpl' [2018-10-04 14:37:10,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 14:37:10,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 14:37:10,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 14:37:10,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 14:37:10,787 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 14:37:10,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/1) ... [2018-10-04 14:37:10,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/1) ... [2018-10-04 14:37:10,829 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-04 14:37:10,830 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-04 14:37:10,830 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-04 14:37:10,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 14:37:10,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 14:37:10,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 14:37:10,833 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 14:37:10,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/1) ... [2018-10-04 14:37:10,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/1) ... [2018-10-04 14:37:10,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/1) ... [2018-10-04 14:37:10,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/1) ... [2018-10-04 14:37:10,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/1) ... [2018-10-04 14:37:10,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/1) ... [2018-10-04 14:37:10,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/1) ... [2018-10-04 14:37:10,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 14:37:10,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 14:37:10,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 14:37:10,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 14:37:10,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (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 14:37:10,942 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-04 14:37:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-04 14:37:10,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-04 14:37:11,159 INFO L338 CfgBuilder]: Using library mode [2018-10-04 14:37:11,160 INFO L202 PluginConnector]: Adding new model MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:37:11 BoogieIcfgContainer [2018-10-04 14:37:11,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 14:37:11,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 14:37:11,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 14:37:11,165 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 14:37:11,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:37:10" (1/2) ... [2018-10-04 14:37:11,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40685104 and model type MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:37:11, skipping insertion in model container [2018-10-04 14:37:11,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:37:11" (2/2) ... [2018-10-04 14:37:11,168 INFO L112 eAbstractionObserver]: Analyzing ICFG MonadicInvariant01.bpl [2018-10-04 14:37:11,178 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 14:37:11,186 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 14:37:11,232 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 14:37:11,233 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 14:37:11,233 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 14:37:11,234 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 14:37:11,234 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 14:37:11,234 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 14:37:11,234 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 14:37:11,234 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 14:37:11,235 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 14:37:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 14:37:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 14:37:11,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:11,257 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 14:37:11,258 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:11,266 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:11,267 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-10-04 14:37:11,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:11,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:11,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:11,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:11,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:11,403 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 14:37:11,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:37:11,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-10-04 14:37:11,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 14:37:11,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 14:37:11,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:11,426 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 14:37:11,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:11,491 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 14:37:11,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 14:37:11,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 14:37:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:11,505 INFO L225 Difference]: With dead ends: 11 [2018-10-04 14:37:11,506 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 14:37:11,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 14:37:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 14:37:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 14:37:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 14:37:11,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 14:37:11,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-10-04 14:37:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:11,596 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 14:37:11,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 14:37:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 14:37:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 14:37:11,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:11,597 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 14:37:11,597 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:11,598 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:11,598 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-10-04 14:37:11,598 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:11,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:11,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:11,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:11,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:11,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:11,719 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 14:37:11,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:11,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:11,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:11,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2018-10-04 14:37:11,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 14:37:11,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 14:37:11,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:11,909 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-10-04 14:37:11,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:11,975 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 14:37:11,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 14:37:11,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-10-04 14:37:11,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:11,976 INFO L225 Difference]: With dead ends: 9 [2018-10-04 14:37:11,976 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 14:37:11,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 4 [2018-10-04 14:37:11,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 14:37:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 14:37:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 14:37:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 14:37:11,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-10-04 14:37:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:11,981 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 14:37:11,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 14:37:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 14:37:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 14:37:11,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:11,982 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-10-04 14:37:11,982 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:11,982 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:11,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-10-04 14:37:11,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:11,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:11,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:11,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:11,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:12,088 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 14:37:12,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:12,091 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 14:37:12,107 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:12,146 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:12,146 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:12,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:12,214 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 14:37:12,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:12,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2018-10-04 14:37:12,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 14:37:12,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 14:37:12,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:12,237 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2018-10-04 14:37:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:12,349 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 14:37:12,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 14:37:12,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-10-04 14:37:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:12,350 INFO L225 Difference]: With dead ends: 11 [2018-10-04 14:37:12,350 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 14:37:12,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5 [2018-10-04 14:37:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 14:37:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 14:37:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 14:37:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 14:37:12,354 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-10-04 14:37:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:12,355 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 14:37:12,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 14:37:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 14:37:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 14:37:12,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:12,356 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-10-04 14:37:12,356 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:12,356 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:12,357 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-10-04 14:37:12,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:12,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:12,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:12,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:12,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:12,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:12,630 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:12,641 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:12,663 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 14:37:12,663 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:12,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:12,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:12,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2018-10-04 14:37:12,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 14:37:12,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 14:37:12,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:12,794 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2018-10-04 14:37:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:12,863 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 14:37:12,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 14:37:12,864 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2018-10-04 14:37:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:12,864 INFO L225 Difference]: With dead ends: 13 [2018-10-04 14:37:12,865 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 14:37:12,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 6 [2018-10-04 14:37:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 14:37:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 14:37:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 14:37:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 14:37:12,871 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-10-04 14:37:12,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:12,871 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 14:37:12,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 14:37:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 14:37:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 14:37:12,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:12,873 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-10-04 14:37:12,873 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:12,874 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:12,874 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-10-04 14:37:12,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:12,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:12,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:12,877 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:12,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:13,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:13,113 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 14:37:13,126 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:13,141 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:13,141 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:13,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:13,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:13,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2018-10-04 14:37:13,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 14:37:13,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 14:37:13,293 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:13,294 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-10-04 14:37:13,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:13,354 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 14:37:13,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 14:37:13,356 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2018-10-04 14:37:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:13,357 INFO L225 Difference]: With dead ends: 15 [2018-10-04 14:37:13,357 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 14:37:13,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 7 [2018-10-04 14:37:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 14:37:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 14:37:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 14:37:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 14:37:13,361 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-04 14:37:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:13,362 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 14:37:13,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 14:37:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 14:37:13,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 14:37:13,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:13,363 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-10-04 14:37:13,363 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:13,363 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:13,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-10-04 14:37:13,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:13,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:13,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:13,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:13,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:13,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:13,591 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 14:37:13,611 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:13,706 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 14:37:13,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:13,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:14,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:14,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2018-10-04 14:37:14,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 14:37:14,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 14:37:14,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:14,044 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2018-10-04 14:37:14,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:14,138 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 14:37:14,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 14:37:14,138 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-10-04 14:37:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:14,139 INFO L225 Difference]: With dead ends: 17 [2018-10-04 14:37:14,139 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 14:37:14,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 8 [2018-10-04 14:37:14,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 14:37:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 14:37:14,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 14:37:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 14:37:14,144 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-10-04 14:37:14,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:14,144 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 14:37:14,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 14:37:14,144 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 14:37:14,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 14:37:14,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:14,146 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-10-04 14:37:14,146 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:14,147 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:14,147 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-10-04 14:37:14,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:14,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:14,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:14,149 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:14,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:14,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:14,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:14,283 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:14,325 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 14:37:14,325 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:14,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:14,484 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:14,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2018-10-04 14:37:14,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 14:37:14,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 14:37:14,485 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:14,485 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 16 states. [2018-10-04 14:37:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:14,539 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 14:37:14,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 14:37:14,540 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2018-10-04 14:37:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:14,541 INFO L225 Difference]: With dead ends: 19 [2018-10-04 14:37:14,541 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 14:37:14,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 9 [2018-10-04 14:37:14,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 14:37:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 14:37:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 14:37:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 14:37:14,545 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-10-04 14:37:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:14,546 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 14:37:14,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 14:37:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 14:37:14,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 14:37:14,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:14,547 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-10-04 14:37:14,547 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:14,548 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:14,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-10-04 14:37:14,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:14,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:14,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:14,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:14,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:14,693 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:14,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:14,694 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:14,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:14,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:14,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:14,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2018-10-04 14:37:14,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 14:37:14,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 14:37:14,872 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:14,872 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-10-04 14:37:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:14,955 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 14:37:14,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 14:37:14,956 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-10-04 14:37:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:14,957 INFO L225 Difference]: With dead ends: 21 [2018-10-04 14:37:14,958 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 14:37:14,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-04 14:37:14,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 14:37:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 14:37:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 14:37:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 14:37:14,962 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-10-04 14:37:14,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:14,963 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 14:37:14,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 14:37:14,963 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 14:37:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 14:37:14,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:14,964 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-10-04 14:37:14,964 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:14,964 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:14,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-10-04 14:37:14,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:14,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:14,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:14,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:14,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:15,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:15,137 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 14:37:15,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:15,154 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:15,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:15,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:15,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:15,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2018-10-04 14:37:15,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 14:37:15,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 14:37:15,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:15,451 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 20 states. [2018-10-04 14:37:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:15,506 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 14:37:15,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 14:37:15,506 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2018-10-04 14:37:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:15,508 INFO L225 Difference]: With dead ends: 23 [2018-10-04 14:37:15,508 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 14:37:15,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 11 [2018-10-04 14:37:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 14:37:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 14:37:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 14:37:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 14:37:15,513 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-10-04 14:37:15,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:15,513 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 14:37:15,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 14:37:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 14:37:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 14:37:15,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:15,514 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-10-04 14:37:15,515 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:15,515 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:15,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-10-04 14:37:15,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:15,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:15,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:15,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:15,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:15,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:15,642 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 14:37:15,650 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:15,662 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 14:37:15,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:15,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:15,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:15,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2018-10-04 14:37:15,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 14:37:15,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 14:37:15,934 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:15,934 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 22 states. [2018-10-04 14:37:16,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:16,184 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 14:37:16,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 14:37:16,185 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2018-10-04 14:37:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:16,185 INFO L225 Difference]: With dead ends: 25 [2018-10-04 14:37:16,186 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 14:37:16,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 12 [2018-10-04 14:37:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 14:37:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 14:37:16,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 14:37:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 14:37:16,191 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-10-04 14:37:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:16,191 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 14:37:16,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 14:37:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 14:37:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 14:37:16,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:16,192 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-10-04 14:37:16,192 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:16,193 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:16,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-10-04 14:37:16,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:16,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:16,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:16,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:16,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:16,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:16,340 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 14:37:16,347 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:16,362 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:16,363 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:16,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:16,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:16,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2018-10-04 14:37:16,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 14:37:16,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 14:37:16,551 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:16,551 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 24 states. [2018-10-04 14:37:16,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:16,608 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 14:37:16,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 14:37:16,609 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 23 [2018-10-04 14:37:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:16,610 INFO L225 Difference]: With dead ends: 27 [2018-10-04 14:37:16,610 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 14:37:16,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 13 [2018-10-04 14:37:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 14:37:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 14:37:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 14:37:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 14:37:16,616 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-10-04 14:37:16,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:16,617 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 14:37:16,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 14:37:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 14:37:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 14:37:16,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:16,618 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-10-04 14:37:16,618 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:16,618 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:16,618 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-10-04 14:37:16,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:16,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:16,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:16,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:16,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:16,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:16,929 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 14:37:16,936 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:17,054 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 14:37:17,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:17,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:17,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:17,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2018-10-04 14:37:17,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 14:37:17,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 14:37:17,525 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:17,525 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 26 states. [2018-10-04 14:37:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:17,589 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 14:37:17,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 14:37:17,590 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25 [2018-10-04 14:37:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:17,591 INFO L225 Difference]: With dead ends: 29 [2018-10-04 14:37:17,591 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 14:37:17,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 14 [2018-10-04 14:37:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 14:37:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 14:37:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 14:37:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 14:37:17,597 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-10-04 14:37:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:17,597 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 14:37:17,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 14:37:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 14:37:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 14:37:17,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:17,599 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-10-04 14:37:17,599 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:17,599 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:17,599 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-10-04 14:37:17,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:17,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:17,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:17,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:17,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:17,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:17,891 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 14:37:17,906 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:17,984 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 14:37:17,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:17,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:18,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:18,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2018-10-04 14:37:18,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 14:37:18,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 14:37:18,274 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:18,275 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 28 states. [2018-10-04 14:37:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:18,381 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 14:37:18,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 14:37:18,382 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 27 [2018-10-04 14:37:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:18,383 INFO L225 Difference]: With dead ends: 31 [2018-10-04 14:37:18,383 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 14:37:18,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 15 [2018-10-04 14:37:18,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 14:37:18,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 14:37:18,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 14:37:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 14:37:18,387 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-10-04 14:37:18,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:18,387 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 14:37:18,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 14:37:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 14:37:18,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 14:37:18,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:18,388 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-10-04 14:37:18,389 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:18,389 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:18,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-10-04 14:37:18,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:18,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:18,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:18,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:18,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:18,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:18,600 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 14:37:18,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:18,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:18,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:18,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2018-10-04 14:37:18,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 14:37:18,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 14:37:18,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:18,950 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 30 states. [2018-10-04 14:37:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:19,120 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 14:37:19,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 14:37:19,121 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29 [2018-10-04 14:37:19,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:19,122 INFO L225 Difference]: With dead ends: 33 [2018-10-04 14:37:19,122 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 14:37:19,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 16 [2018-10-04 14:37:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 14:37:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 14:37:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 14:37:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 14:37:19,128 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-10-04 14:37:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:19,128 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 14:37:19,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 14:37:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 14:37:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 14:37:19,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:19,129 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-10-04 14:37:19,130 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:19,130 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:19,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-10-04 14:37:19,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:19,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:19,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:19,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:19,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:19,398 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 14:37:19,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:19,399 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 14:37:19,408 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:19,426 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:19,426 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:19,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:19,888 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 14:37:19,909 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:19,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2018-10-04 14:37:19,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 14:37:19,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 14:37:19,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:19,910 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 32 states. [2018-10-04 14:37:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:20,032 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 14:37:20,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 14:37:20,032 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 31 [2018-10-04 14:37:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:20,033 INFO L225 Difference]: With dead ends: 35 [2018-10-04 14:37:20,033 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 14:37:20,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 17 [2018-10-04 14:37:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 14:37:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 14:37:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 14:37:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 14:37:20,038 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-10-04 14:37:20,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:20,039 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 14:37:20,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 14:37:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 14:37:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 14:37:20,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:20,040 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-10-04 14:37:20,040 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:20,040 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:20,040 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-10-04 14:37:20,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:20,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:20,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:20,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:20,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:20,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:20,282 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 14:37:20,289 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:20,471 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 14:37:20,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:20,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:21,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:21,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2018-10-04 14:37:21,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 14:37:21,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 14:37:21,313 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:21,314 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 34 states. [2018-10-04 14:37:21,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:21,445 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 14:37:21,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 14:37:21,446 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 33 [2018-10-04 14:37:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:21,447 INFO L225 Difference]: With dead ends: 37 [2018-10-04 14:37:21,447 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 14:37:21,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 18 [2018-10-04 14:37:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 14:37:21,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 14:37:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 14:37:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 14:37:21,453 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-10-04 14:37:21,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:21,453 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 14:37:21,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 14:37:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 14:37:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 14:37:21,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:21,454 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-10-04 14:37:21,454 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:21,454 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:21,454 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-10-04 14:37:21,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:21,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:21,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:21,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:21,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:21,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:21,652 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:21,661 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:21,671 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:21,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:21,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:21,966 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:21,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2018-10-04 14:37:21,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 14:37:21,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 14:37:21,967 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:21,967 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 36 states. [2018-10-04 14:37:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:22,105 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 14:37:22,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 14:37:22,106 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2018-10-04 14:37:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:22,106 INFO L225 Difference]: With dead ends: 39 [2018-10-04 14:37:22,106 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 14:37:22,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 19 [2018-10-04 14:37:22,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 14:37:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 14:37:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 14:37:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 14:37:22,111 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-10-04 14:37:22,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:22,111 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 14:37:22,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 14:37:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 14:37:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 14:37:22,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:22,112 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-10-04 14:37:22,112 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:22,112 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-10-04 14:37:22,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:22,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:22,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:22,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:22,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:22,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:22,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:22,553 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:22,627 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 14:37:22,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:22,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:22,915 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:22,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2018-10-04 14:37:22,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 14:37:22,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 14:37:22,916 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:22,916 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 38 states. [2018-10-04 14:37:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:23,117 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 14:37:23,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 14:37:23,117 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 37 [2018-10-04 14:37:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:23,118 INFO L225 Difference]: With dead ends: 41 [2018-10-04 14:37:23,118 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 14:37:23,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 20 [2018-10-04 14:37:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 14:37:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 14:37:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 14:37:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 14:37:23,125 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-10-04 14:37:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:23,125 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 14:37:23,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 14:37:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 14:37:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 14:37:23,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:23,126 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-10-04 14:37:23,126 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:23,126 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:23,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-10-04 14:37:23,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:23,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:23,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:23,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:23,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:23,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:23,689 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 14:37:23,698 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:23,715 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 14:37:23,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:23,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:24,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:24,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38 [2018-10-04 14:37:24,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 14:37:24,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 14:37:24,081 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:24,081 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 40 states. [2018-10-04 14:37:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:24,192 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 14:37:24,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 14:37:24,192 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 39 [2018-10-04 14:37:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:24,193 INFO L225 Difference]: With dead ends: 43 [2018-10-04 14:37:24,194 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 14:37:24,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 21 [2018-10-04 14:37:24,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 14:37:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 14:37:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 14:37:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 14:37:24,199 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-10-04 14:37:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:24,200 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 14:37:24,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 14:37:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 14:37:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 14:37:24,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:24,201 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-10-04 14:37:24,202 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:24,202 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:24,202 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-10-04 14:37:24,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:24,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:24,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:24,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:24,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:24,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:24,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:24,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:24,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:24,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:24,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 40 [2018-10-04 14:37:24,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 14:37:24,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 14:37:24,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:24,911 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 42 states. [2018-10-04 14:37:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:25,017 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 14:37:25,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 14:37:25,017 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 41 [2018-10-04 14:37:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:25,018 INFO L225 Difference]: With dead ends: 45 [2018-10-04 14:37:25,018 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 14:37:25,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 22 [2018-10-04 14:37:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 14:37:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 14:37:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 14:37:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 14:37:25,024 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-10-04 14:37:25,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:25,025 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 14:37:25,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 14:37:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 14:37:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 14:37:25,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:25,026 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-10-04 14:37:25,026 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:25,026 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:25,026 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-10-04 14:37:25,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:25,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:25,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:25,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:25,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:25,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:25,453 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:37:25,461 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:25,473 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:25,473 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:25,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:25,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:25,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 42 [2018-10-04 14:37:25,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 14:37:25,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 14:37:25,934 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:25,934 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 44 states. [2018-10-04 14:37:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:26,035 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 14:37:26,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 14:37:26,035 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 43 [2018-10-04 14:37:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:26,036 INFO L225 Difference]: With dead ends: 47 [2018-10-04 14:37:26,036 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 14:37:26,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 23 [2018-10-04 14:37:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 14:37:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 14:37:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 14:37:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 14:37:26,043 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-10-04 14:37:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:26,043 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 14:37:26,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 14:37:26,044 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 14:37:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 14:37:26,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:26,045 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-10-04 14:37:26,045 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:26,045 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:26,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-10-04 14:37:26,045 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:26,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:26,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:26,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:26,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:26,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:26,452 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 14:37:26,460 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:26,488 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 14:37:26,488 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:26,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:27,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:27,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 44 [2018-10-04 14:37:27,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 14:37:27,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 14:37:27,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:27,920 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 46 states. [2018-10-04 14:37:28,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:28,064 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 14:37:28,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 14:37:28,066 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 45 [2018-10-04 14:37:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:28,066 INFO L225 Difference]: With dead ends: 49 [2018-10-04 14:37:28,067 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 14:37:28,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 24 [2018-10-04 14:37:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 14:37:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 14:37:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 14:37:28,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 14:37:28,071 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-10-04 14:37:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:28,072 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 14:37:28,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 14:37:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 14:37:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 14:37:28,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:28,073 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-10-04 14:37:28,073 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:28,073 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:28,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-10-04 14:37:28,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:28,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:28,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:28,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:28,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:28,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:28,992 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 14:37:29,001 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:29,016 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:29,016 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:29,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:30,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:30,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2018-10-04 14:37:30,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 14:37:30,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 14:37:30,265 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:30,265 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 48 states. [2018-10-04 14:37:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:30,356 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 14:37:30,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 14:37:30,356 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 47 [2018-10-04 14:37:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:30,357 INFO L225 Difference]: With dead ends: 51 [2018-10-04 14:37:30,357 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 14:37:30,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 25 [2018-10-04 14:37:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 14:37:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 14:37:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 14:37:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 14:37:30,362 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-10-04 14:37:30,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:30,362 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 14:37:30,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 14:37:30,363 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 14:37:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 14:37:30,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:30,363 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-10-04 14:37:30,364 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:30,364 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-10-04 14:37:30,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:30,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:30,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:30,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:30,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:30,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:30,680 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:30,687 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:30,709 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 14:37:30,709 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:30,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:31,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:31,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2018-10-04 14:37:31,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 14:37:31,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 14:37:31,802 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:31,802 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 50 states. [2018-10-04 14:37:31,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:31,908 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 14:37:31,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 14:37:31,908 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 49 [2018-10-04 14:37:31,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:31,909 INFO L225 Difference]: With dead ends: 53 [2018-10-04 14:37:31,909 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 14:37:31,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 26 [2018-10-04 14:37:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 14:37:31,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 14:37:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 14:37:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 14:37:31,914 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-10-04 14:37:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:31,914 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 14:37:31,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 14:37:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 14:37:31,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 14:37:31,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:31,916 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-10-04 14:37:31,916 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:31,916 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:31,917 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-10-04 14:37:31,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:31,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:31,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:31,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:31,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:32,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:32,530 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:32,544 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:32,577 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 14:37:32,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:32,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:33,087 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:33,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 50 [2018-10-04 14:37:33,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 14:37:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 14:37:33,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:33,089 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 52 states. [2018-10-04 14:37:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:33,264 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 14:37:33,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 14:37:33,265 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 51 [2018-10-04 14:37:33,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:33,265 INFO L225 Difference]: With dead ends: 55 [2018-10-04 14:37:33,266 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 14:37:33,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 27 [2018-10-04 14:37:33,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 14:37:33,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 14:37:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 14:37:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 14:37:33,270 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-10-04 14:37:33,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:33,270 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 14:37:33,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 14:37:33,270 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 14:37:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 14:37:33,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:33,271 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-10-04 14:37:33,271 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:33,271 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:33,271 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-10-04 14:37:33,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:33,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:33,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:33,272 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:33,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:33,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:33,686 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:33,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:33,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:34,207 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:34,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52 [2018-10-04 14:37:34,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 14:37:34,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 14:37:34,209 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:34,209 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 54 states. [2018-10-04 14:37:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:34,351 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 14:37:34,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 14:37:34,351 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 53 [2018-10-04 14:37:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:34,352 INFO L225 Difference]: With dead ends: 57 [2018-10-04 14:37:34,352 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 14:37:34,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 28 [2018-10-04 14:37:34,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 14:37:34,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 14:37:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 14:37:34,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 14:37:34,357 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-10-04 14:37:34,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:34,358 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 14:37:34,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 14:37:34,358 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 14:37:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 14:37:34,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:34,358 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-10-04 14:37:34,359 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:34,359 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:34,359 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-10-04 14:37:34,359 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:34,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:34,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:34,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:34,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:34,868 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:34,869 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 14:37:34,876 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:34,888 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:34,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:34,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:35,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:35,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 54 [2018-10-04 14:37:35,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 14:37:35,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 14:37:35,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:35,400 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 56 states. [2018-10-04 14:37:35,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:35,612 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 14:37:35,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 14:37:35,613 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 55 [2018-10-04 14:37:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:35,614 INFO L225 Difference]: With dead ends: 59 [2018-10-04 14:37:35,614 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 14:37:35,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 29 [2018-10-04 14:37:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 14:37:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 14:37:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 14:37:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 14:37:35,619 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-10-04 14:37:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:35,619 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 14:37:35,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 14:37:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 14:37:35,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 14:37:35,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:35,620 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-10-04 14:37:35,621 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:35,621 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:35,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-10-04 14:37:35,621 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:35,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:35,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:35,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:35,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:36,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:36,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:36,118 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:36,148 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 14:37:36,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:36,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:36,685 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:36,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2018-10-04 14:37:36,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 14:37:36,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 14:37:36,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:36,686 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 58 states. [2018-10-04 14:37:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:36,830 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 14:37:36,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 14:37:36,831 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 57 [2018-10-04 14:37:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:36,832 INFO L225 Difference]: With dead ends: 61 [2018-10-04 14:37:36,832 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 14:37:36,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 30 [2018-10-04 14:37:36,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 14:37:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 14:37:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 14:37:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 14:37:36,835 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-10-04 14:37:36,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:36,835 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 14:37:36,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 14:37:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 14:37:36,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 14:37:36,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:36,836 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-10-04 14:37:36,836 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:36,837 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:36,837 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-10-04 14:37:36,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:36,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:36,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:36,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:36,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:37,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:37,281 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 14:37:37,290 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:37,326 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:37,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:37,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:38,244 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:38,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58 [2018-10-04 14:37:38,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 14:37:38,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 14:37:38,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:38,245 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 60 states. [2018-10-04 14:37:38,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:38,591 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 14:37:38,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 14:37:38,591 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 59 [2018-10-04 14:37:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:38,592 INFO L225 Difference]: With dead ends: 63 [2018-10-04 14:37:38,592 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 14:37:38,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 31 [2018-10-04 14:37:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 14:37:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 14:37:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 14:37:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 14:37:38,595 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-10-04 14:37:38,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:38,595 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 14:37:38,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 14:37:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 14:37:38,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 14:37:38,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:38,596 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-10-04 14:37:38,596 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:38,596 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:38,596 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-10-04 14:37:38,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:38,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:38,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:38,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:38,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:38,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:38,981 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 14:37:38,988 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:39,013 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 14:37:39,014 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:39,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:39,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:39,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 60 [2018-10-04 14:37:39,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 14:37:39,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 14:37:39,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:39,670 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 62 states. [2018-10-04 14:37:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:39,882 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 14:37:39,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 14:37:39,882 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 61 [2018-10-04 14:37:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:39,883 INFO L225 Difference]: With dead ends: 65 [2018-10-04 14:37:39,883 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 14:37:39,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 32 [2018-10-04 14:37:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 14:37:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 14:37:39,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 14:37:39,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 14:37:39,888 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-10-04 14:37:39,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:39,888 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 14:37:39,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 14:37:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 14:37:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 14:37:39,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:39,889 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-10-04 14:37:39,889 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:39,889 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:39,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-10-04 14:37:39,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:39,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:39,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:39,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:39,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:40,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:40,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:40,902 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:40,933 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 14:37:40,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:40,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:41,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:41,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 62 [2018-10-04 14:37:41,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 14:37:41,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 14:37:41,584 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:41,584 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 64 states. [2018-10-04 14:37:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:41,724 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 14:37:41,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 14:37:41,725 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 63 [2018-10-04 14:37:41,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:41,726 INFO L225 Difference]: With dead ends: 67 [2018-10-04 14:37:41,726 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 14:37:41,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 33 [2018-10-04 14:37:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 14:37:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 14:37:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 14:37:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 14:37:41,730 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-10-04 14:37:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:41,730 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 14:37:41,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 14:37:41,730 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 14:37:41,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 14:37:41,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:41,731 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-10-04 14:37:41,731 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:41,731 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:41,731 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-10-04 14:37:41,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:41,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:41,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:41,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:41,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:42,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:42,699 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 14:37:42,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:42,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:43,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:43,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 64 [2018-10-04 14:37:43,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 14:37:43,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 14:37:43,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:43,375 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 66 states. [2018-10-04 14:37:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:43,631 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 14:37:43,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 14:37:43,631 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 65 [2018-10-04 14:37:43,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:43,632 INFO L225 Difference]: With dead ends: 69 [2018-10-04 14:37:43,632 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 14:37:43,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 34 [2018-10-04 14:37:43,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 14:37:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 14:37:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 14:37:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 14:37:43,635 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-10-04 14:37:43,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:43,636 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 14:37:43,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 14:37:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 14:37:43,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 14:37:43,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:43,636 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-10-04 14:37:43,637 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:43,637 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:43,637 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-10-04 14:37:43,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:43,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:43,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:43,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:43,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:44,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:44,338 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 14:37:44,345 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:44,363 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:44,364 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:44,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:45,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:45,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 66 [2018-10-04 14:37:45,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 14:37:45,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 14:37:45,148 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:45,148 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 68 states. [2018-10-04 14:37:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:45,300 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 14:37:45,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 14:37:45,300 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 67 [2018-10-04 14:37:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:45,301 INFO L225 Difference]: With dead ends: 71 [2018-10-04 14:37:45,301 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 14:37:45,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 35 [2018-10-04 14:37:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 14:37:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 14:37:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 14:37:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 14:37:45,305 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-10-04 14:37:45,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:45,305 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 14:37:45,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 14:37:45,305 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 14:37:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 14:37:45,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:45,306 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-10-04 14:37:45,306 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:45,306 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:45,306 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-10-04 14:37:45,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:45,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:45,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:45,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:45,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:46,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:46,176 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:46,184 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:46,215 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 14:37:46,216 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:46,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:46,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:46,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 68 [2018-10-04 14:37:46,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 14:37:46,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 14:37:46,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:46,953 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 70 states. [2018-10-04 14:37:47,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:47,119 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 14:37:47,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 14:37:47,119 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 69 [2018-10-04 14:37:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:47,120 INFO L225 Difference]: With dead ends: 73 [2018-10-04 14:37:47,120 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 14:37:47,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 36 [2018-10-04 14:37:47,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 14:37:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 14:37:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 14:37:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 14:37:47,124 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-10-04 14:37:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:47,124 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 14:37:47,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 14:37:47,124 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 14:37:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 14:37:47,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:47,125 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-10-04 14:37:47,125 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:47,125 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:47,125 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-10-04 14:37:47,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:47,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:47,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:47,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:47,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:47,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:47,620 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:47,628 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:37:47,647 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:37:47,647 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:47,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:48,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:48,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 70 [2018-10-04 14:37:48,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 14:37:48,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 14:37:48,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:48,177 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 72 states. [2018-10-04 14:37:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:48,338 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 14:37:48,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 14:37:48,338 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 71 [2018-10-04 14:37:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:48,339 INFO L225 Difference]: With dead ends: 75 [2018-10-04 14:37:48,339 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 14:37:48,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 37 [2018-10-04 14:37:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 14:37:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 14:37:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 14:37:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 14:37:48,343 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-10-04 14:37:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:48,343 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 14:37:48,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 14:37:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 14:37:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 14:37:48,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:48,344 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-10-04 14:37:48,344 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:48,344 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-10-04 14:37:48,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:48,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:48,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:48,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:48,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:49,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:49,049 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 14:37:49,056 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:37:49,090 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 14:37:49,090 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:49,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:49,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:49,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 72 [2018-10-04 14:37:49,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 14:37:49,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 14:37:49,884 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:49,884 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 74 states. [2018-10-04 14:37:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:50,384 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 14:37:50,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 14:37:50,385 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 73 [2018-10-04 14:37:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:50,386 INFO L225 Difference]: With dead ends: 77 [2018-10-04 14:37:50,386 INFO L226 Difference]: Without dead ends: 76 [2018-10-04 14:37:50,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 38 [2018-10-04 14:37:50,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-04 14:37:50,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-04 14:37:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-04 14:37:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-04 14:37:50,388 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-10-04 14:37:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:50,389 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-04 14:37:50,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 14:37:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-04 14:37:50,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-04 14:37:50,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:50,389 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-10-04 14:37:50,390 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:50,390 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:50,390 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-10-04 14:37:50,390 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:50,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:50,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:50,391 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:50,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:51,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:51,165 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 14:37:51,173 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:37:51,207 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 14:37:51,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:51,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:51,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:51,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 74 [2018-10-04 14:37:51,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 14:37:51,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 14:37:51,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:51,875 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 76 states. [2018-10-04 14:37:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:52,031 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 14:37:52,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 14:37:52,031 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 75 [2018-10-04 14:37:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:52,032 INFO L225 Difference]: With dead ends: 79 [2018-10-04 14:37:52,032 INFO L226 Difference]: Without dead ends: 78 [2018-10-04 14:37:52,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 39 [2018-10-04 14:37:52,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-04 14:37:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-04 14:37:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-04 14:37:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-04 14:37:52,036 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-10-04 14:37:52,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:52,036 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-04 14:37:52,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 14:37:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-04 14:37:52,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-04 14:37:52,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:52,037 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-10-04 14:37:52,037 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:52,037 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:52,037 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-10-04 14:37:52,037 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:52,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:52,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:52,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:52,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:53,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:53,497 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 14:37:53,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:53,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:54,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:54,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 76 [2018-10-04 14:37:54,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 14:37:54,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 14:37:54,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:54,739 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 78 states. [2018-10-04 14:37:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:54,942 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 14:37:54,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 14:37:54,943 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 77 [2018-10-04 14:37:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:54,944 INFO L225 Difference]: With dead ends: 81 [2018-10-04 14:37:54,944 INFO L226 Difference]: Without dead ends: 80 [2018-10-04 14:37:54,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime 40 [2018-10-04 14:37:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-04 14:37:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-04 14:37:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-04 14:37:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-04 14:37:54,947 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-10-04 14:37:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:54,948 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-04 14:37:54,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 14:37:54,948 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-04 14:37:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-04 14:37:54,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:54,948 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-10-04 14:37:54,949 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:54,949 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-10-04 14:37:54,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:54,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:54,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:54,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:37:54,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:56,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:56,104 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 14:37:56,112 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:37:56,132 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:37:56,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:56,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:57,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:57,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 78 [2018-10-04 14:37:57,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 14:37:57,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 14:37:57,054 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:57,054 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 80 states. [2018-10-04 14:37:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:57,251 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 14:37:57,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 14:37:57,252 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 79 [2018-10-04 14:37:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:57,253 INFO L225 Difference]: With dead ends: 83 [2018-10-04 14:37:57,253 INFO L226 Difference]: Without dead ends: 82 [2018-10-04 14:37:57,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 41 [2018-10-04 14:37:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-04 14:37:57,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-04 14:37:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-04 14:37:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-04 14:37:57,259 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-10-04 14:37:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:57,259 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-04 14:37:57,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 14:37:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-04 14:37:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-04 14:37:57,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:57,260 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-10-04 14:37:57,260 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:57,260 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:57,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-10-04 14:37:57,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:57,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:57,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:57,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:57,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:37:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:58,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:37:58,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:37:58,380 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:37:58,416 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 14:37:58,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:37:58,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:37:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:37:59,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:37:59,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 80 [2018-10-04 14:37:59,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 14:37:59,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 14:37:59,612 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:37:59,612 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 82 states. [2018-10-04 14:37:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:37:59,811 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 14:37:59,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 14:37:59,812 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 81 [2018-10-04 14:37:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:37:59,812 INFO L225 Difference]: With dead ends: 85 [2018-10-04 14:37:59,812 INFO L226 Difference]: Without dead ends: 84 [2018-10-04 14:37:59,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 42 [2018-10-04 14:37:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-04 14:37:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-04 14:37:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-04 14:37:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-04 14:37:59,817 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-10-04 14:37:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:37:59,817 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-04 14:37:59,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 14:37:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-04 14:37:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-04 14:37:59,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:37:59,818 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-10-04 14:37:59,818 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:37:59,818 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:37:59,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-10-04 14:37:59,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:37:59,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:37:59,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:59,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:37:59,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:37:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:00,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:00,694 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:38:00,702 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:38:00,725 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:38:00,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:00,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:01,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:01,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 82 [2018-10-04 14:38:01,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 14:38:01,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 14:38:01,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:01,814 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 84 states. [2018-10-04 14:38:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:02,028 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 14:38:02,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 14:38:02,028 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 83 [2018-10-04 14:38:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:02,029 INFO L225 Difference]: With dead ends: 87 [2018-10-04 14:38:02,030 INFO L226 Difference]: Without dead ends: 86 [2018-10-04 14:38:02,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.6s impTime 43 [2018-10-04 14:38:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-04 14:38:02,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-04 14:38:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-04 14:38:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-04 14:38:02,034 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-10-04 14:38:02,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:02,035 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-04 14:38:02,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 14:38:02,035 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-04 14:38:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-04 14:38:02,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:02,036 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-10-04 14:38:02,036 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:02,036 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:02,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-10-04 14:38:02,036 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:02,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:02,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:02,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:02,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:02,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:02,686 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:38:02,695 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:38:02,738 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 14:38:02,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:02,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:03,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:03,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 84 [2018-10-04 14:38:03,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 14:38:03,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 14:38:03,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:03,546 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 86 states. [2018-10-04 14:38:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:03,840 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 14:38:03,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 14:38:03,841 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 85 [2018-10-04 14:38:03,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:03,841 INFO L225 Difference]: With dead ends: 89 [2018-10-04 14:38:03,841 INFO L226 Difference]: Without dead ends: 88 [2018-10-04 14:38:03,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 44 [2018-10-04 14:38:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-04 14:38:03,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-04 14:38:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-04 14:38:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-04 14:38:03,847 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-10-04 14:38:03,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:03,847 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-04 14:38:03,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 14:38:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-04 14:38:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-04 14:38:03,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:03,848 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-10-04 14:38:03,848 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:03,848 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:03,848 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-10-04 14:38:03,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:03,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:03,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:03,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:03,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:04,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:04,905 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:38:04,912 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:38:04,952 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 14:38:04,953 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:04,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:06,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:06,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 86 [2018-10-04 14:38:06,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 14:38:06,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 14:38:06,129 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:06,129 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 88 states. [2018-10-04 14:38:06,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:06,361 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 14:38:06,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 14:38:06,361 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 87 [2018-10-04 14:38:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:06,362 INFO L225 Difference]: With dead ends: 91 [2018-10-04 14:38:06,362 INFO L226 Difference]: Without dead ends: 90 [2018-10-04 14:38:06,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 45 [2018-10-04 14:38:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-04 14:38:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-04 14:38:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-04 14:38:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-04 14:38:06,365 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-10-04 14:38:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:06,366 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-04 14:38:06,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 14:38:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-04 14:38:06,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-04 14:38:06,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:06,366 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-10-04 14:38:06,366 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:06,367 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:06,367 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-10-04 14:38:06,367 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:06,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:06,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:06,368 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:06,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:08,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:08,396 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 14:38:08,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:08,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:09,814 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:09,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 88 [2018-10-04 14:38:09,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 14:38:09,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 14:38:09,816 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:09,816 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 90 states. [2018-10-04 14:38:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:10,023 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 14:38:10,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 14:38:10,023 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 89 [2018-10-04 14:38:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:10,024 INFO L225 Difference]: With dead ends: 93 [2018-10-04 14:38:10,024 INFO L226 Difference]: Without dead ends: 92 [2018-10-04 14:38:10,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.8s impTime 46 [2018-10-04 14:38:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-04 14:38:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-04 14:38:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-04 14:38:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-04 14:38:10,027 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-10-04 14:38:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:10,028 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-04 14:38:10,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 14:38:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-04 14:38:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-04 14:38:10,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:10,029 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-10-04 14:38:10,029 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:10,029 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:10,029 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-10-04 14:38:10,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:10,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:10,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:10,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:10,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:10,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:10,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:38:10,871 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:38:10,894 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:38:10,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:10,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:11,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:11,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 90 [2018-10-04 14:38:11,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 14:38:11,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 14:38:11,992 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:11,992 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 92 states. [2018-10-04 14:38:12,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:12,216 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 14:38:12,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 14:38:12,217 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 91 [2018-10-04 14:38:12,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:12,217 INFO L225 Difference]: With dead ends: 95 [2018-10-04 14:38:12,217 INFO L226 Difference]: Without dead ends: 94 [2018-10-04 14:38:12,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 47 [2018-10-04 14:38:12,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-04 14:38:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-04 14:38:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-04 14:38:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-04 14:38:12,221 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-10-04 14:38:12,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:12,221 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-04 14:38:12,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 14:38:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-04 14:38:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-04 14:38:12,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:12,222 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-10-04 14:38:12,223 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:12,223 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-10-04 14:38:12,223 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:12,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:12,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:12,224 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:12,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:13,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:13,514 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 14:38:13,522 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:38:13,564 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 14:38:13,565 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:13,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:14,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:14,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 92 [2018-10-04 14:38:14,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 14:38:14,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 14:38:14,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:14,881 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 94 states. [2018-10-04 14:38:15,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:15,114 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 14:38:15,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 14:38:15,114 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 93 [2018-10-04 14:38:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:15,115 INFO L225 Difference]: With dead ends: 97 [2018-10-04 14:38:15,115 INFO L226 Difference]: Without dead ends: 96 [2018-10-04 14:38:15,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime 48 [2018-10-04 14:38:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-04 14:38:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-04 14:38:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-04 14:38:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-04 14:38:15,120 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-10-04 14:38:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:15,120 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-04 14:38:15,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 14:38:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-04 14:38:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-04 14:38:15,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:15,121 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-10-04 14:38:15,121 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:15,121 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-10-04 14:38:15,121 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:15,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:15,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:15,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:15,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:15,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:15,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:38:15,905 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:38:15,932 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:38:15,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:15,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:16,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:16,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 94 [2018-10-04 14:38:16,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 14:38:16,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 14:38:16,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:16,869 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 96 states. [2018-10-04 14:38:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:17,087 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 14:38:17,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 14:38:17,088 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 95 [2018-10-04 14:38:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:17,089 INFO L225 Difference]: With dead ends: 99 [2018-10-04 14:38:17,089 INFO L226 Difference]: Without dead ends: 98 [2018-10-04 14:38:17,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 49 [2018-10-04 14:38:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-04 14:38:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-04 14:38:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-04 14:38:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-04 14:38:17,094 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-10-04 14:38:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:17,094 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-04 14:38:17,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 14:38:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-04 14:38:17,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-04 14:38:17,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:17,095 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-10-04 14:38:17,095 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:17,095 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:17,095 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-10-04 14:38:17,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:17,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:17,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:17,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:17,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:17,959 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:17,959 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:38:17,966 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:38:18,012 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 14:38:18,013 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:18,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:19,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:19,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 96 [2018-10-04 14:38:19,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 14:38:19,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 14:38:19,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:19,063 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 98 states. [2018-10-04 14:38:19,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:19,351 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 14:38:19,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 14:38:19,352 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 97 [2018-10-04 14:38:19,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:19,352 INFO L225 Difference]: With dead ends: 101 [2018-10-04 14:38:19,353 INFO L226 Difference]: Without dead ends: 100 [2018-10-04 14:38:19,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 50 [2018-10-04 14:38:19,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-04 14:38:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-04 14:38:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-04 14:38:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-04 14:38:19,357 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-10-04 14:38:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:19,357 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-04 14:38:19,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 14:38:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-04 14:38:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-04 14:38:19,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:19,358 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-10-04 14:38:19,358 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:19,358 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:19,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-10-04 14:38:19,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:19,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:19,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:19,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:19,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:20,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:20,776 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 14:38:20,785 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:38:20,831 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 14:38:20,832 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:20,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:21,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:21,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 98 [2018-10-04 14:38:21,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 14:38:21,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 14:38:21,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:21,871 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 100 states. [2018-10-04 14:38:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:22,107 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 14:38:22,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 14:38:22,108 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 99 [2018-10-04 14:38:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:22,109 INFO L225 Difference]: With dead ends: 103 [2018-10-04 14:38:22,109 INFO L226 Difference]: Without dead ends: 102 [2018-10-04 14:38:22,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 51 [2018-10-04 14:38:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-04 14:38:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-04 14:38:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-04 14:38:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-04 14:38:22,114 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-10-04 14:38:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:22,115 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-04 14:38:22,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 14:38:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-04 14:38:22,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-04 14:38:22,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:22,115 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-10-04 14:38:22,115 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:22,116 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:22,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-10-04 14:38:22,116 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:22,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:22,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:22,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:22,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:23,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:23,378 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 14:38:23,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:23,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:25,814 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:25,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 100 [2018-10-04 14:38:25,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 14:38:25,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 14:38:25,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:25,816 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 102 states. [2018-10-04 14:38:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:26,081 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 14:38:26,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 14:38:26,082 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 101 [2018-10-04 14:38:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:26,083 INFO L225 Difference]: With dead ends: 105 [2018-10-04 14:38:26,083 INFO L226 Difference]: Without dead ends: 104 [2018-10-04 14:38:26,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.8s impTime 52 [2018-10-04 14:38:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-04 14:38:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-04 14:38:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-04 14:38:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-04 14:38:26,087 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-10-04 14:38:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:26,087 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-04 14:38:26,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 14:38:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-04 14:38:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-04 14:38:26,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:26,088 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-10-04 14:38:26,088 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:26,089 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:26,089 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-10-04 14:38:26,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:26,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:26,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:26,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:26,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:27,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:27,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:38:27,523 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:38:27,557 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:38:27,557 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:27,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:29,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:29,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 102 [2018-10-04 14:38:29,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 14:38:29,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 14:38:29,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:29,080 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 104 states. [2018-10-04 14:38:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:30,116 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 14:38:30,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 14:38:30,117 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 103 [2018-10-04 14:38:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:30,118 INFO L225 Difference]: With dead ends: 107 [2018-10-04 14:38:30,118 INFO L226 Difference]: Without dead ends: 106 [2018-10-04 14:38:30,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.4s impTime 53 [2018-10-04 14:38:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-04 14:38:30,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-04 14:38:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-04 14:38:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-04 14:38:30,123 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-10-04 14:38:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:30,124 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-04 14:38:30,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 14:38:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-04 14:38:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-04 14:38:30,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:30,124 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-10-04 14:38:30,126 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:30,126 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:30,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-10-04 14:38:30,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:30,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:30,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:30,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:30,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:31,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:31,962 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 14:38:31,969 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:38:32,019 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-04 14:38:32,020 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:32,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:33,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:33,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 104 [2018-10-04 14:38:33,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 14:38:33,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 14:38:33,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:33,370 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 106 states. [2018-10-04 14:38:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:33,648 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 14:38:33,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 14:38:33,648 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 105 [2018-10-04 14:38:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:33,649 INFO L225 Difference]: With dead ends: 109 [2018-10-04 14:38:33,649 INFO L226 Difference]: Without dead ends: 108 [2018-10-04 14:38:33,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.4s impTime 54 [2018-10-04 14:38:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-04 14:38:33,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-04 14:38:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-04 14:38:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-04 14:38:33,654 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-10-04 14:38:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:33,654 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-04 14:38:33,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 14:38:33,654 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-04 14:38:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-04 14:38:33,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:33,655 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-10-04 14:38:33,655 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:33,655 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:33,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-10-04 14:38:33,655 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:33,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:33,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:33,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:33,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:35,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:35,554 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:38:35,565 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:38:35,610 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:38:35,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:35,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:38,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:38,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 106 [2018-10-04 14:38:38,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 14:38:38,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 14:38:38,175 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:38,175 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 108 states. [2018-10-04 14:38:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:38,489 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 14:38:38,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 14:38:38,490 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 107 [2018-10-04 14:38:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:38,491 INFO L225 Difference]: With dead ends: 111 [2018-10-04 14:38:38,491 INFO L226 Difference]: Without dead ends: 110 [2018-10-04 14:38:38,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time 3.5s impTime 55 [2018-10-04 14:38:38,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-04 14:38:38,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-04 14:38:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-04 14:38:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-04 14:38:38,494 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-10-04 14:38:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:38,495 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-04 14:38:38,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 14:38:38,495 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-04 14:38:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-04 14:38:38,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:38,496 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-10-04 14:38:38,496 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:38,496 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:38,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-10-04 14:38:38,496 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:38,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:38,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:38,497 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:38,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:39,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:39,573 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 14:38:39,590 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:38:39,701 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-04 14:38:39,702 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:39,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:41,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:41,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 108 [2018-10-04 14:38:41,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 14:38:41,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 14:38:41,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:41,439 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 110 states. [2018-10-04 14:38:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:41,709 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 14:38:41,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 14:38:41,710 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 109 [2018-10-04 14:38:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:41,711 INFO L225 Difference]: With dead ends: 113 [2018-10-04 14:38:41,711 INFO L226 Difference]: Without dead ends: 112 [2018-10-04 14:38:41,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 56 [2018-10-04 14:38:41,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-04 14:38:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-04 14:38:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-04 14:38:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-04 14:38:41,714 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-10-04 14:38:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:41,714 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-04 14:38:41,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 14:38:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-04 14:38:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-04 14:38:41,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:41,715 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-10-04 14:38:41,715 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:41,715 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:41,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-10-04 14:38:41,715 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:41,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:41,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:41,716 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:41,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:43,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:43,631 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 14:38:43,639 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:38:43,692 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 14:38:43,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:43,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:45,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:45,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 110 [2018-10-04 14:38:45,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-04 14:38:45,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-04 14:38:45,479 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:45,479 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 112 states. [2018-10-04 14:38:45,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:45,840 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-04 14:38:45,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 14:38:45,841 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 111 [2018-10-04 14:38:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:45,842 INFO L225 Difference]: With dead ends: 115 [2018-10-04 14:38:45,842 INFO L226 Difference]: Without dead ends: 114 [2018-10-04 14:38:45,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.0s impTime 57 [2018-10-04 14:38:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-04 14:38:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-04 14:38:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-04 14:38:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-04 14:38:45,847 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-10-04 14:38:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:45,847 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-04 14:38:45,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-04 14:38:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-04 14:38:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-04 14:38:45,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:45,848 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-10-04 14:38:45,848 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:45,848 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:45,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-10-04 14:38:45,849 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:45,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:45,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:45,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:45,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:47,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:47,504 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 14:38:47,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:47,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:49,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:49,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 112 [2018-10-04 14:38:49,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-04 14:38:49,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-04 14:38:49,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:49,132 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 114 states. [2018-10-04 14:38:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:49,920 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 14:38:49,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 14:38:49,921 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 113 [2018-10-04 14:38:49,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:49,922 INFO L225 Difference]: With dead ends: 117 [2018-10-04 14:38:49,922 INFO L226 Difference]: Without dead ends: 116 [2018-10-04 14:38:49,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.7s impTime 58 [2018-10-04 14:38:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-04 14:38:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-04 14:38:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-04 14:38:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-04 14:38:49,928 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-10-04 14:38:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:49,928 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-04 14:38:49,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-04 14:38:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-04 14:38:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-04 14:38:49,929 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:49,929 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-10-04 14:38:49,929 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:49,929 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-10-04 14:38:49,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:49,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:49,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:49,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:38:49,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:51,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:51,358 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:38:51,367 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:38:51,398 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:38:51,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:51,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:53,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:53,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 114 [2018-10-04 14:38:53,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-04 14:38:53,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-04 14:38:53,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:53,216 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 116 states. [2018-10-04 14:38:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:53,554 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-04 14:38:53,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 14:38:53,554 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 115 [2018-10-04 14:38:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:53,555 INFO L225 Difference]: With dead ends: 119 [2018-10-04 14:38:53,555 INFO L226 Difference]: Without dead ends: 118 [2018-10-04 14:38:53,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.7s impTime 59 [2018-10-04 14:38:53,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-04 14:38:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-04 14:38:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-04 14:38:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-04 14:38:53,560 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-10-04 14:38:53,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:53,560 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-04 14:38:53,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-04 14:38:53,561 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-04 14:38:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-04 14:38:53,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:53,561 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-10-04 14:38:53,561 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:53,561 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:53,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-10-04 14:38:53,562 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:53,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:53,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:53,562 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:53,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:55,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:55,260 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 14:38:55,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:38:55,347 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-04 14:38:55,347 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:55,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:57,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:57,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 116 [2018-10-04 14:38:57,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-04 14:38:57,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-04 14:38:57,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:57,160 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 118 states. [2018-10-04 14:38:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:38:57,465 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-04 14:38:57,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 14:38:57,466 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 117 [2018-10-04 14:38:57,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:38:57,467 INFO L225 Difference]: With dead ends: 121 [2018-10-04 14:38:57,467 INFO L226 Difference]: Without dead ends: 120 [2018-10-04 14:38:57,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.9s impTime 60 [2018-10-04 14:38:57,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-04 14:38:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-04 14:38:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-04 14:38:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-04 14:38:57,472 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-10-04 14:38:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:38:57,472 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-04 14:38:57,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-04 14:38:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-04 14:38:57,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-04 14:38:57,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:38:57,473 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-10-04 14:38:57,473 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:38:57,473 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:38:57,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-10-04 14:38:57,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:38:57,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:38:57,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:57,474 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:38:57,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:38:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:38:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:58,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:38:58,512 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 14:38:58,521 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:38:58,554 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:38:58,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:38:58,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:38:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:38:59,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:38:59,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 118 [2018-10-04 14:38:59,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-04 14:38:59,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-04 14:38:59,999 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:38:59,999 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 120 states. [2018-10-04 14:39:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:00,391 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-04 14:39:00,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 14:39:00,391 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 119 [2018-10-04 14:39:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:00,392 INFO L225 Difference]: With dead ends: 123 [2018-10-04 14:39:00,392 INFO L226 Difference]: Without dead ends: 122 [2018-10-04 14:39:00,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 61 [2018-10-04 14:39:00,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-04 14:39:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-04 14:39:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-04 14:39:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-04 14:39:00,397 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-10-04 14:39:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:00,398 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-04 14:39:00,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-04 14:39:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-04 14:39:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-04 14:39:00,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:00,399 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-10-04 14:39:00,399 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:00,399 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:00,399 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-10-04 14:39:00,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:00,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:00,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:00,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:00,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:01,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:01,978 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:39:01,987 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:39:02,050 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-04 14:39:02,050 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:02,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:04,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:04,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 120 [2018-10-04 14:39:04,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-04 14:39:04,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-04 14:39:04,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:04,045 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 122 states. [2018-10-04 14:39:04,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:04,581 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-04 14:39:04,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 14:39:04,581 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 121 [2018-10-04 14:39:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:04,582 INFO L225 Difference]: With dead ends: 125 [2018-10-04 14:39:04,582 INFO L226 Difference]: Without dead ends: 124 [2018-10-04 14:39:04,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.9s impTime 62 [2018-10-04 14:39:04,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-04 14:39:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-04 14:39:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-04 14:39:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-04 14:39:04,588 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-10-04 14:39:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:04,589 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-04 14:39:04,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-04 14:39:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-04 14:39:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-04 14:39:04,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:04,590 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-10-04 14:39:04,590 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:04,590 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-10-04 14:39:04,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:04,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:04,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:04,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:04,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:06,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:06,640 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 14:39:06,649 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:39:06,711 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-04 14:39:06,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:06,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:08,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:08,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 122 [2018-10-04 14:39:08,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-04 14:39:08,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-04 14:39:08,452 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:08,452 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 124 states. [2018-10-04 14:39:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:08,800 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-04 14:39:08,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 14:39:08,800 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 123 [2018-10-04 14:39:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:08,801 INFO L225 Difference]: With dead ends: 127 [2018-10-04 14:39:08,801 INFO L226 Difference]: Without dead ends: 126 [2018-10-04 14:39:08,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.0s impTime 63 [2018-10-04 14:39:08,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-04 14:39:08,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-04 14:39:08,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-04 14:39:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-04 14:39:08,804 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-10-04 14:39:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:08,804 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-04 14:39:08,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-04 14:39:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-04 14:39:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-04 14:39:08,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:08,805 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-10-04 14:39:08,805 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:08,805 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:08,806 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-10-04 14:39:08,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:08,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:08,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:08,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:08,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:10,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:10,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:39:10,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:10,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:12,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:12,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 124 [2018-10-04 14:39:12,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-04 14:39:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-04 14:39:12,220 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:12,220 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 126 states. [2018-10-04 14:39:12,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:12,574 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-04 14:39:12,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 14:39:12,574 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 125 [2018-10-04 14:39:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:12,575 INFO L225 Difference]: With dead ends: 129 [2018-10-04 14:39:12,575 INFO L226 Difference]: Without dead ends: 128 [2018-10-04 14:39:12,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.8s impTime 64 [2018-10-04 14:39:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-04 14:39:12,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-04 14:39:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-04 14:39:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-10-04 14:39:12,579 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-10-04 14:39:12,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:12,580 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-10-04 14:39:12,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-04 14:39:12,580 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-10-04 14:39:12,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-04 14:39:12,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:12,581 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-10-04 14:39:12,581 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:12,581 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:12,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-10-04 14:39:12,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:12,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:12,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:12,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:12,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:14,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:14,509 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 14:39:14,517 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:39:14,550 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:39:14,551 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:14,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:16,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:16,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 126 [2018-10-04 14:39:16,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-04 14:39:16,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-04 14:39:16,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:16,566 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 128 states. [2018-10-04 14:39:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:16,920 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-04 14:39:16,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 14:39:16,920 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 127 [2018-10-04 14:39:16,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:16,921 INFO L225 Difference]: With dead ends: 131 [2018-10-04 14:39:16,921 INFO L226 Difference]: Without dead ends: 130 [2018-10-04 14:39:16,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.4s impTime 65 [2018-10-04 14:39:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-04 14:39:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-04 14:39:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-04 14:39:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-04 14:39:16,924 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-10-04 14:39:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:16,924 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-04 14:39:16,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-04 14:39:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-04 14:39:16,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-04 14:39:16,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:16,925 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-10-04 14:39:16,925 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:16,925 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:16,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-10-04 14:39:16,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:16,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:16,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:16,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:16,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:18,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:18,795 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 14:39:18,806 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:39:18,876 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-04 14:39:18,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:18,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:20,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:20,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 128 [2018-10-04 14:39:20,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-04 14:39:20,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-04 14:39:20,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:20,928 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 130 states. [2018-10-04 14:39:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:21,307 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-04 14:39:21,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 14:39:21,307 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 129 [2018-10-04 14:39:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:21,308 INFO L225 Difference]: With dead ends: 133 [2018-10-04 14:39:21,308 INFO L226 Difference]: Without dead ends: 132 [2018-10-04 14:39:21,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.4s impTime 66 [2018-10-04 14:39:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-04 14:39:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-10-04 14:39:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-04 14:39:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-04 14:39:21,312 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-10-04 14:39:21,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:21,313 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-04 14:39:21,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-04 14:39:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-04 14:39:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-04 14:39:21,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:21,314 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-10-04 14:39:21,314 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:21,314 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:21,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-10-04 14:39:21,314 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:21,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:21,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:21,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:21,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:23,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:23,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:39:23,260 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:39:23,298 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:39:23,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:23,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:25,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:25,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 130 [2018-10-04 14:39:25,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-04 14:39:25,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-04 14:39:25,475 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:25,475 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 132 states. [2018-10-04 14:39:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:25,884 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-04 14:39:25,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 14:39:25,884 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 131 [2018-10-04 14:39:25,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:25,885 INFO L225 Difference]: With dead ends: 135 [2018-10-04 14:39:25,885 INFO L226 Difference]: Without dead ends: 134 [2018-10-04 14:39:25,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.5s impTime 67 [2018-10-04 14:39:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-04 14:39:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-10-04 14:39:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-04 14:39:25,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-10-04 14:39:25,890 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-10-04 14:39:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:25,891 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-10-04 14:39:25,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-04 14:39:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-10-04 14:39:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-04 14:39:25,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:25,892 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-10-04 14:39:25,892 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:25,892 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:25,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-10-04 14:39:25,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:25,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:25,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:25,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:25,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:27,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:27,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:39:27,416 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:39:27,487 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-04 14:39:27,487 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:27,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:30,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:30,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 132 [2018-10-04 14:39:30,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-04 14:39:30,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-04 14:39:30,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:30,597 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 134 states. [2018-10-04 14:39:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:31,022 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-04 14:39:31,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 14:39:31,023 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 133 [2018-10-04 14:39:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:31,024 INFO L225 Difference]: With dead ends: 137 [2018-10-04 14:39:31,024 INFO L226 Difference]: Without dead ends: 136 [2018-10-04 14:39:31,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time 3.8s impTime 68 [2018-10-04 14:39:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-04 14:39:31,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-04 14:39:31,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-04 14:39:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-04 14:39:31,029 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-10-04 14:39:31,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:31,029 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-04 14:39:31,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-04 14:39:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-04 14:39:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-04 14:39:31,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:31,030 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-10-04 14:39:31,030 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:31,031 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:31,031 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-10-04 14:39:31,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:31,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:31,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:31,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:31,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:33,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:33,279 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:39:33,286 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:39:33,360 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-04 14:39:33,360 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:33,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:35,807 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:35,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 134 [2018-10-04 14:39:35,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-04 14:39:35,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-04 14:39:35,809 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:35,809 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 136 states. [2018-10-04 14:39:36,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:36,283 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-04 14:39:36,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 14:39:36,283 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 135 [2018-10-04 14:39:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:36,284 INFO L225 Difference]: With dead ends: 139 [2018-10-04 14:39:36,284 INFO L226 Difference]: Without dead ends: 138 [2018-10-04 14:39:36,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time 4.1s impTime 69 [2018-10-04 14:39:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-04 14:39:36,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-10-04 14:39:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-04 14:39:36,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-10-04 14:39:36,288 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-10-04 14:39:36,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:36,288 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-10-04 14:39:36,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-04 14:39:36,288 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-10-04 14:39:36,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-04 14:39:36,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:36,289 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-10-04 14:39:36,289 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:36,289 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:36,289 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-10-04 14:39:36,289 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:36,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:36,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:36,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:36,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:37,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:37,931 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 14:39:37,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:37,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:39,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:39,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 136 [2018-10-04 14:39:39,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-04 14:39:39,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-04 14:39:39,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:39,905 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 138 states. [2018-10-04 14:39:40,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:40,285 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-04 14:39:40,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 14:39:40,285 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 137 [2018-10-04 14:39:40,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:40,286 INFO L225 Difference]: With dead ends: 141 [2018-10-04 14:39:40,286 INFO L226 Difference]: Without dead ends: 140 [2018-10-04 14:39:40,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.9s impTime 70 [2018-10-04 14:39:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-04 14:39:40,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-04 14:39:40,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-04 14:39:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-10-04 14:39:40,293 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-10-04 14:39:40,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:40,293 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-10-04 14:39:40,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-04 14:39:40,293 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-10-04 14:39:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-04 14:39:40,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:40,294 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-10-04 14:39:40,294 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:40,294 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:40,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-10-04 14:39:40,295 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:40,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:40,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:40,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:39:40,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:42,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:42,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:39:42,398 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:39:42,435 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:39:42,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:42,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:44,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:44,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 138 [2018-10-04 14:39:44,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-04 14:39:44,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-04 14:39:44,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:44,667 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 140 states. [2018-10-04 14:39:45,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:45,061 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-04 14:39:45,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 14:39:45,061 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 139 [2018-10-04 14:39:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:45,062 INFO L225 Difference]: With dead ends: 143 [2018-10-04 14:39:45,062 INFO L226 Difference]: Without dead ends: 142 [2018-10-04 14:39:45,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time 3.7s impTime 71 [2018-10-04 14:39:45,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-04 14:39:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-04 14:39:45,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-04 14:39:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-04 14:39:45,066 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-10-04 14:39:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:45,067 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-04 14:39:45,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-04 14:39:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-04 14:39:45,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-04 14:39:45,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:45,067 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-10-04 14:39:45,068 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:45,068 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:45,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-10-04 14:39:45,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:45,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:45,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:45,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:45,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:47,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:47,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:39:47,071 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:39:47,147 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-04 14:39:47,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:47,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:49,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:49,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 140 [2018-10-04 14:39:49,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-04 14:39:49,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-04 14:39:49,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:49,594 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 142 states. [2018-10-04 14:39:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:50,030 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-04 14:39:50,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 14:39:50,031 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 141 [2018-10-04 14:39:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:50,032 INFO L225 Difference]: With dead ends: 145 [2018-10-04 14:39:50,032 INFO L226 Difference]: Without dead ends: 144 [2018-10-04 14:39:50,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.8s impTime 72 [2018-10-04 14:39:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-04 14:39:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-10-04 14:39:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-04 14:39:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-10-04 14:39:50,036 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-10-04 14:39:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:50,036 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-10-04 14:39:50,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-04 14:39:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-10-04 14:39:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-04 14:39:50,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:50,037 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-10-04 14:39:50,037 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:50,037 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:50,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-10-04 14:39:50,038 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:50,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:50,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:50,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:50,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:51,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:51,573 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 14:39:51,580 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:39:51,617 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:39:51,617 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:51,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:53,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:53,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 142 [2018-10-04 14:39:53,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-04 14:39:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-04 14:39:53,526 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:53,526 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 144 states. [2018-10-04 14:39:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:53,942 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-04 14:39:53,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 14:39:53,942 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 143 [2018-10-04 14:39:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:53,943 INFO L225 Difference]: With dead ends: 147 [2018-10-04 14:39:53,943 INFO L226 Difference]: Without dead ends: 146 [2018-10-04 14:39:53,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.8s impTime 73 [2018-10-04 14:39:53,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-04 14:39:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-04 14:39:53,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-04 14:39:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-04 14:39:53,947 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-10-04 14:39:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:53,948 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-04 14:39:53,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-04 14:39:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-04 14:39:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-04 14:39:53,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:53,949 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-10-04 14:39:53,949 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:53,949 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-10-04 14:39:53,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:53,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:53,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:53,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:53,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:39:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:55,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:39:55,465 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 14:39:55,472 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:39:55,664 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-04 14:39:55,664 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:39:55,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:39:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:39:58,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:39:58,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 144 [2018-10-04 14:39:58,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-04 14:39:58,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-04 14:39:58,608 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:39:58,609 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 146 states. [2018-10-04 14:39:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:39:59,062 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-04 14:39:59,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 14:39:59,063 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 145 [2018-10-04 14:39:59,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:39:59,064 INFO L225 Difference]: With dead ends: 149 [2018-10-04 14:39:59,064 INFO L226 Difference]: Without dead ends: 148 [2018-10-04 14:39:59,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.6s impTime 74 [2018-10-04 14:39:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-04 14:39:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-04 14:39:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-04 14:39:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-04 14:39:59,068 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-10-04 14:39:59,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:39:59,069 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-04 14:39:59,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-04 14:39:59,069 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-04 14:39:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-04 14:39:59,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:39:59,070 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-10-04 14:39:59,070 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:39:59,070 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:39:59,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-10-04 14:39:59,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:39:59,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:39:59,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:59,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:39:59,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:39:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:00,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:00,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:00,890 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:40:00,897 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:40:00,990 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-04 14:40:00,990 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:00,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:02,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:02,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 146 [2018-10-04 14:40:02,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-04 14:40:02,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-04 14:40:02,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:02,804 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 148 states. [2018-10-04 14:40:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:03,226 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-04 14:40:03,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 14:40:03,226 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 147 [2018-10-04 14:40:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:03,227 INFO L225 Difference]: With dead ends: 151 [2018-10-04 14:40:03,227 INFO L226 Difference]: Without dead ends: 150 [2018-10-04 14:40:03,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.0s impTime 75 [2018-10-04 14:40:03,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-04 14:40:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-04 14:40:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-04 14:40:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-04 14:40:03,232 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-10-04 14:40:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:03,233 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-04 14:40:03,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-04 14:40:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-04 14:40:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-04 14:40:03,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:03,234 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-10-04 14:40:03,234 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:03,234 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:03,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-10-04 14:40:03,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:03,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:03,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:03,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:03,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:06,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:06,032 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 14:40:06,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:40:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:06,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:08,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:08,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 148 [2018-10-04 14:40:08,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-04 14:40:08,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-04 14:40:08,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:08,977 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 150 states. [2018-10-04 14:40:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:09,457 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-04 14:40:09,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 14:40:09,457 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 149 [2018-10-04 14:40:09,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:09,458 INFO L225 Difference]: With dead ends: 153 [2018-10-04 14:40:09,458 INFO L226 Difference]: Without dead ends: 152 [2018-10-04 14:40:09,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s Time 5.0s impTime 76 [2018-10-04 14:40:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-04 14:40:09,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-10-04 14:40:09,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-04 14:40:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-10-04 14:40:09,463 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-10-04 14:40:09,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:09,463 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-10-04 14:40:09,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-04 14:40:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-10-04 14:40:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-04 14:40:09,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:09,464 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-10-04 14:40:09,464 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:09,464 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:09,465 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-10-04 14:40:09,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:09,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:09,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:09,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:40:09,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:11,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:11,937 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 14:40:11,943 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:40:11,982 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:40:11,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:11,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:14,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:14,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 150 [2018-10-04 14:40:14,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-04 14:40:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-04 14:40:14,817 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:14,817 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 152 states. [2018-10-04 14:40:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:15,268 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-04 14:40:15,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 14:40:15,268 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 151 [2018-10-04 14:40:15,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:15,269 INFO L225 Difference]: With dead ends: 155 [2018-10-04 14:40:15,269 INFO L226 Difference]: Without dead ends: 154 [2018-10-04 14:40:15,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time 4.6s impTime 77 [2018-10-04 14:40:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-04 14:40:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-04 14:40:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-04 14:40:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-04 14:40:15,274 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-10-04 14:40:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:15,274 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-04 14:40:15,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-04 14:40:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-04 14:40:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-04 14:40:15,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:15,275 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-10-04 14:40:15,275 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:15,275 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:15,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-10-04 14:40:15,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:15,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:15,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:15,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:15,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:17,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:17,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:40:17,553 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:40:17,644 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-04 14:40:17,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:17,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:19,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:19,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 152 [2018-10-04 14:40:19,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-04 14:40:19,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-04 14:40:19,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:19,829 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 154 states. [2018-10-04 14:40:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:20,274 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-04 14:40:20,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 14:40:20,274 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 153 [2018-10-04 14:40:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:20,275 INFO L225 Difference]: With dead ends: 157 [2018-10-04 14:40:20,275 INFO L226 Difference]: Without dead ends: 156 [2018-10-04 14:40:20,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.8s impTime 78 [2018-10-04 14:40:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-04 14:40:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-04 14:40:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-04 14:40:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-04 14:40:20,278 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-10-04 14:40:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:20,278 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-04 14:40:20,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-04 14:40:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-04 14:40:20,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-04 14:40:20,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:20,279 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-10-04 14:40:20,279 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:20,280 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:20,280 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-10-04 14:40:20,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:20,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:20,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:20,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:20,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:22,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:22,490 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 14:40:22,498 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:40:22,542 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:40:22,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:22,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:25,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:25,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 154 [2018-10-04 14:40:25,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-04 14:40:25,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-04 14:40:25,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:25,030 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 156 states. [2018-10-04 14:40:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:25,510 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-04 14:40:25,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 14:40:25,510 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 155 [2018-10-04 14:40:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:25,511 INFO L225 Difference]: With dead ends: 159 [2018-10-04 14:40:25,511 INFO L226 Difference]: Without dead ends: 158 [2018-10-04 14:40:25,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time 4.1s impTime 79 [2018-10-04 14:40:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-04 14:40:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-04 14:40:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-04 14:40:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-04 14:40:25,514 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-10-04 14:40:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:25,514 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-04 14:40:25,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-04 14:40:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-04 14:40:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-04 14:40:25,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:25,515 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-10-04 14:40:25,515 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:25,515 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:25,516 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-10-04 14:40:25,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:25,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:25,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:25,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:25,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:28,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:28,193 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 14:40:28,201 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:40:28,296 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-04 14:40:28,296 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:28,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:31,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:31,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 156 [2018-10-04 14:40:31,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-04 14:40:31,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-04 14:40:31,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:31,477 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 158 states. [2018-10-04 14:40:32,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:32,021 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-04 14:40:32,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 14:40:32,022 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 157 [2018-10-04 14:40:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:32,022 INFO L225 Difference]: With dead ends: 161 [2018-10-04 14:40:32,022 INFO L226 Difference]: Without dead ends: 160 [2018-10-04 14:40:32,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s Time 5.2s impTime 80 [2018-10-04 14:40:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-04 14:40:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-04 14:40:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-04 14:40:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-04 14:40:32,028 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-10-04 14:40:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:32,028 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-04 14:40:32,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-04 14:40:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-04 14:40:32,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-04 14:40:32,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:32,029 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-10-04 14:40:32,029 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:32,029 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:32,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-10-04 14:40:32,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:32,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:32,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:32,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:32,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:35,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:35,205 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 14:40:35,213 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:40:35,302 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-04 14:40:35,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:35,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:38,485 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:38,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 158 [2018-10-04 14:40:38,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-04 14:40:38,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-04 14:40:38,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:38,487 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 160 states. [2018-10-04 14:40:39,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:39,049 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-04 14:40:39,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 14:40:39,049 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 159 [2018-10-04 14:40:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:39,050 INFO L225 Difference]: With dead ends: 163 [2018-10-04 14:40:39,050 INFO L226 Difference]: Without dead ends: 162 [2018-10-04 14:40:39,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1s Time 5.7s impTime 81 [2018-10-04 14:40:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-04 14:40:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-10-04 14:40:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-04 14:40:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-10-04 14:40:39,056 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-10-04 14:40:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:39,056 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-10-04 14:40:39,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-04 14:40:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-10-04 14:40:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-04 14:40:39,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:39,058 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-10-04 14:40:39,058 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:39,058 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:39,058 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-10-04 14:40:39,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:39,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:39,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:39,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:39,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:42,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:42,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:40:42,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:40:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:42,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:45,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:45,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 160 [2018-10-04 14:40:45,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-04 14:40:45,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-04 14:40:45,634 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:45,634 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 162 states. [2018-10-04 14:40:46,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:46,189 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-04 14:40:46,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 14:40:46,190 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 161 [2018-10-04 14:40:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:46,190 INFO L225 Difference]: With dead ends: 165 [2018-10-04 14:40:46,190 INFO L226 Difference]: Without dead ends: 164 [2018-10-04 14:40:46,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s Time 5.8s impTime 82 [2018-10-04 14:40:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-04 14:40:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-04 14:40:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-04 14:40:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-10-04 14:40:46,196 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-10-04 14:40:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:46,196 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-10-04 14:40:46,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-04 14:40:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-10-04 14:40:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-04 14:40:46,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:46,197 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-10-04 14:40:46,198 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:46,198 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:46,198 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-10-04 14:40:46,198 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:46,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:46,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:46,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:40:46,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:49,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:49,285 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 14:40:49,292 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:40:49,333 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:40:49,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:49,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:52,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:52,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 162 [2018-10-04 14:40:52,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-04 14:40:52,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-04 14:40:52,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:52,740 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 164 states. [2018-10-04 14:40:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:53,332 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-04 14:40:53,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 14:40:53,332 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 163 [2018-10-04 14:40:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:53,333 INFO L225 Difference]: With dead ends: 167 [2018-10-04 14:40:53,333 INFO L226 Difference]: Without dead ends: 166 [2018-10-04 14:40:53,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2s Time 5.8s impTime 83 [2018-10-04 14:40:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-04 14:40:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-04 14:40:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-04 14:40:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-04 14:40:53,338 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-10-04 14:40:53,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:53,338 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-04 14:40:53,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-04 14:40:53,338 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-04 14:40:53,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-04 14:40:53,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:53,339 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-10-04 14:40:53,339 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:53,339 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:53,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-10-04 14:40:53,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:53,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:53,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:53,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:53,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:40:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:56,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:40:56,055 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 14:40:56,062 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:40:56,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-04 14:40:56,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:40:56,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:40:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:40:59,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:40:59,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 164 [2018-10-04 14:40:59,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-04 14:40:59,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-04 14:40:59,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:40:59,406 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 166 states. [2018-10-04 14:40:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:40:59,938 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-04 14:40:59,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 14:40:59,938 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 165 [2018-10-04 14:40:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:40:59,939 INFO L225 Difference]: With dead ends: 169 [2018-10-04 14:40:59,939 INFO L226 Difference]: Without dead ends: 168 [2018-10-04 14:40:59,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s Time 5.3s impTime 84 [2018-10-04 14:40:59,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-04 14:40:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-10-04 14:40:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-04 14:40:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-10-04 14:40:59,943 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-10-04 14:40:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:40:59,943 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-10-04 14:40:59,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-04 14:40:59,944 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-10-04 14:40:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-04 14:40:59,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:40:59,944 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-10-04 14:40:59,944 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:40:59,945 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:40:59,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-10-04 14:40:59,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:40:59,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:40:59,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:59,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:40:59,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:40:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:01,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:01,936 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 14:41:01,945 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:41:01,991 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:41:01,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:41:01,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:41:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:04,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:41:04,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 166 [2018-10-04 14:41:04,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-04 14:41:04,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-04 14:41:04,182 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:41:04,182 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 168 states. [2018-10-04 14:41:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:41:04,705 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-04 14:41:04,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 14:41:04,705 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 167 [2018-10-04 14:41:04,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:41:04,706 INFO L225 Difference]: With dead ends: 171 [2018-10-04 14:41:04,706 INFO L226 Difference]: Without dead ends: 170 [2018-10-04 14:41:04,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.5s impTime 85 [2018-10-04 14:41:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-04 14:41:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-10-04 14:41:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-04 14:41:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-10-04 14:41:04,710 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-10-04 14:41:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:41:04,710 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-10-04 14:41:04,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-04 14:41:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-10-04 14:41:04,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-04 14:41:04,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:41:04,711 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-10-04 14:41:04,711 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:41:04,711 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:41:04,711 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-10-04 14:41:04,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:41:04,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:41:04,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:04,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:41:04,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:41:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:41:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:41:07,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:41:07,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:41:07,882 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:41:07,990 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-04 14:41:07,990 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:41:07,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-04 14:41:09,288 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-04 14:41:09,488 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 14:41:09,489 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 14:41:09,494 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 14:41:09,494 INFO L202 PluginConnector]: Adding new model MonadicInvariant01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 02:41:09 BoogieIcfgContainer [2018-10-04 14:41:09,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 14:41:09,495 INFO L168 Benchmark]: Toolchain (without parser) took 238710.68 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -119.0 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 195.9 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. [2018-10-04 14:41:09,497 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:41:09,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.83 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:41:09,498 INFO L168 Benchmark]: Boogie Preprocessor took 26.78 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:41:09,499 INFO L168 Benchmark]: RCFGBuilder took 300.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 14:41:09,505 INFO L168 Benchmark]: TraceAbstraction took 238333.41 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -119.0 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 174.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2018-10-04 14:41:09,509 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.83 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.78 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 300.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238333.41 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -119.0 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 174.8 MB). Peak memory consumption was 55.8 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 170 with TraceHistMax 84, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 238.2s OverallTime, 84 OverallIterations, 84 TraceHistogramMax, 23.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 168 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 14394 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10456 GetRequests, 3485 SyntacticMatches, 0 SemanticMatches, 6971 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 195.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=83, 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, 83 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 201.0s InterpolantComputationTime, 14107 NumberOfCodeBlocks, 14107 NumberOfCodeBlocksAsserted, 1860 NumberOfCheckSat, 13942 ConstructedInterpolants, 0 QuantifiedInterpolants, 9314564 SizeOfPredicates, 0 NumberOfNonLiveVariables, 14268 ConjunctsInSsa, 3649 ConjunctsInUnsatCore, 165 InterpolantComputations, 1 PerfectInterpolantSequences, 0/381136 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/MonadicInvariant01.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_14-41-09-522.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/MonadicInvariant01.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_14-41-09-522.csv Completed graceful shutdown