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/20170304-DifficultPathPrograms/array1.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 00:39:14,664 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:39:14,666 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:39:14,679 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 00:39:14,731 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 [2018-10-01 00:39:14,758 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:39:14,758 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:39:14,759 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:39:14,759 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:39:14,763 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:39:14,763 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:39:14,764 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:39:14,764 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:39:14,764 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:39:14,764 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:39:14,765 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:39:14,765 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:39:14,765 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:39:14,765 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:39:14,765 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:39:14,766 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:39:14,766 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:39:14,766 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:39:14,766 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:39:14,766 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:39:14,767 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:39:14,767 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:39:14,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:39:14,767 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:39:14,767 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:39:14,768 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:39:14,768 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:39:14,768 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:39:14,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:39:14,768 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:39:14,768 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:39:14,810 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:39:14,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:39:14,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:39:14,832 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:39:14,833 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:39:14,834 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array1.i_3.bpl [2018-10-01 00:39:14,834 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array1.i_3.bpl' [2018-10-01 00:39:14,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:39:14,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:39:14,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:39:14,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:39:14,899 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:39:14,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/1) ... [2018-10-01 00:39:14,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/1) ... [2018-10-01 00:39:14,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:39:14,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:39:14,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:39:14,943 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:39:14,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/1) ... [2018-10-01 00:39:14,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/1) ... [2018-10-01 00:39:14,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/1) ... [2018-10-01 00:39:14,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/1) ... [2018-10-01 00:39:14,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/1) ... [2018-10-01 00:39:14,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/1) ... [2018-10-01 00:39:14,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/1) ... [2018-10-01 00:39:14,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:39:14,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:39:14,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:39:14,962 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:39:14,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (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 [2018-10-01 00:39:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-01 00:39:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-01 00:39:15,274 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-01 00:39:15,275 INFO L202 PluginConnector]: Adding new model array1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:39:15 BoogieIcfgContainer [2018-10-01 00:39:15,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:39:15,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:39:15,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:39:15,280 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:39:15,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:14" (1/2) ... [2018-10-01 00:39:15,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b674356 and model type array1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:39:15, skipping insertion in model container [2018-10-01 00:39:15,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:39:15" (2/2) ... [2018-10-01 00:39:15,284 INFO L112 eAbstractionObserver]: Analyzing ICFG array1.i_3.bpl [2018-10-01 00:39:15,295 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:39:15,305 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:39:15,356 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:39:15,357 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:39:15,357 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:39:15,357 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:39:15,357 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:39:15,357 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:39:15,358 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:39:15,358 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:39:15,358 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:39:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-01 00:39:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-01 00:39:15,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:15,382 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-01 00:39:15,383 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:15,390 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:15,391 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-01 00:39:15,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:15,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:15,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:15,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:15,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:15,538 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:39:15,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:39:15,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:39:15,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:39:15,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:15,559 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-01 00:39:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:15,682 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-01 00:39:15,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:39:15,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-01 00:39:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:15,701 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:39:15,701 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 00:39:15,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:39:15,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 00:39:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 00:39:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 00:39:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-01 00:39:15,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-01 00:39:15,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:15,747 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-01 00:39:15,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:39:15,747 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-01 00:39:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 00:39:15,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:15,748 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-01 00:39:15,749 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:15,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:15,749 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-01 00:39:15,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:15,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:15,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:15,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:15,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:15,881 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:15,881 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 [2018-10-01 00:39:15,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:15,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:16,008 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:16,008 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-01 00:39:16,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:39:16,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:39:16,009 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:16,010 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-01 00:39:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:16,080 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 00:39:16,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:39:16,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-01 00:39:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:16,081 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:39:16,082 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 00:39:16,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:16,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 00:39:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 00:39:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 00:39:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-01 00:39:16,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-01 00:39:16,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:16,094 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-01 00:39:16,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:39:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-01 00:39:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:39:16,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:16,095 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-01 00:39:16,095 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:16,095 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:16,095 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-01 00:39:16,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:16,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:16,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:16,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:16,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:16,205 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:16,221 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:16,243 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:16,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:16,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:16,343 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:16,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 00:39:16,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 00:39:16,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 00:39:16,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:16,344 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-01 00:39:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:16,505 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 00:39:16,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:39:16,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-01 00:39:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:16,506 INFO L225 Difference]: With dead ends: 13 [2018-10-01 00:39:16,506 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 00:39:16,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 00:39:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 00:39:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 00:39:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 00:39:16,513 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-01 00:39:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:16,513 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 00:39:16,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 00:39:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 00:39:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 00:39:16,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:16,514 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-01 00:39:16,515 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:16,515 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:16,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-01 00:39:16,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:16,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:16,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:16,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:16,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:16,756 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:16,766 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:16,783 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-01 00:39:16,783 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:16,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:16,854 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:16,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 00:39:16,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 00:39:16,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 00:39:16,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:16,856 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-01 00:39:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:16,956 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 00:39:16,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:39:16,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-01 00:39:16,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:16,960 INFO L225 Difference]: With dead ends: 15 [2018-10-01 00:39:16,960 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:39:16,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:16,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:39:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 00:39:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:39:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-01 00:39:16,965 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-01 00:39:16,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:16,965 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-01 00:39:16,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 00:39:16,965 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-01 00:39:16,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 00:39:16,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:16,966 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-01 00:39:16,967 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:16,967 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:16,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-01 00:39:16,967 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:16,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:16,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:16,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:17,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:17,092 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 [2018-10-01 00:39:17,104 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:17,144 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:17,144 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:17,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:17,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:17,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 00:39:17,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 00:39:17,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 00:39:17,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:17,246 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-01 00:39:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:17,306 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 00:39:17,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 00:39:17,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-01 00:39:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:17,308 INFO L225 Difference]: With dead ends: 17 [2018-10-01 00:39:17,308 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 00:39:17,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 00:39:17,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 00:39:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 00:39:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 00:39:17,313 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-01 00:39:17,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:17,314 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 00:39:17,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 00:39:17,314 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 00:39:17,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 00:39:17,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:17,315 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-01 00:39:17,315 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:17,315 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:17,316 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-01 00:39:17,316 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:17,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:17,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:17,317 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:17,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:17,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:17,433 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 [2018-10-01 00:39:17,444 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:17,460 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-01 00:39:17,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:17,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:17,788 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:17,789 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 00:39:17,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:39:17,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:39:17,790 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:17,790 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-01 00:39:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:18,128 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 00:39:18,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 00:39:18,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-01 00:39:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:18,130 INFO L225 Difference]: With dead ends: 19 [2018-10-01 00:39:18,130 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 00:39:18,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:18,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 00:39:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-01 00:39:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-01 00:39:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-01 00:39:18,135 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-01 00:39:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:18,135 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-01 00:39:18,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:39:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-01 00:39:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-01 00:39:18,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:18,136 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-01 00:39:18,137 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:18,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:18,137 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-01 00:39:18,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:18,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:18,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:18,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:18,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:18,257 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:18,257 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 [2018-10-01 00:39:18,272 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:18,289 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 00:39:18,290 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:18,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:18,380 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:18,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-01 00:39:18,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 00:39:18,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 00:39:18,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:18,381 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-01 00:39:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:18,473 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 00:39:18,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 00:39:18,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-01 00:39:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:18,474 INFO L225 Difference]: With dead ends: 21 [2018-10-01 00:39:18,475 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 00:39:18,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:18,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 00:39:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 00:39:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 00:39:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-01 00:39:18,479 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-01 00:39:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:18,479 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-01 00:39:18,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 00:39:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-01 00:39:18,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 00:39:18,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:18,480 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-01 00:39:18,481 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:18,481 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:18,481 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-01 00:39:18,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:18,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:18,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:18,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:18,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:18,611 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:18,612 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 [2018-10-01 00:39:18,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:18,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:18,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:18,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 00:39:18,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:39:18,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:39:18,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:18,826 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-01 00:39:18,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:18,920 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 00:39:18,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 00:39:18,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-01 00:39:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:18,922 INFO L225 Difference]: With dead ends: 23 [2018-10-01 00:39:18,922 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 00:39:18,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 00:39:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 00:39:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 00:39:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-01 00:39:18,928 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-01 00:39:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:18,928 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-01 00:39:18,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:39:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-01 00:39:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 00:39:18,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:18,931 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-01 00:39:18,931 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:18,931 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:18,932 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-01 00:39:18,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:18,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:18,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:18,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:18,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:19,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:19,072 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 [2018-10-01 00:39:19,089 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:19,105 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:19,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:19,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:19,206 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:19,206 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 00:39:19,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 00:39:19,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 00:39:19,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:19,208 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-01 00:39:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:19,363 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 00:39:19,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 00:39:19,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-01 00:39:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:19,365 INFO L225 Difference]: With dead ends: 25 [2018-10-01 00:39:19,365 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 00:39:19,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 00:39:19,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 00:39:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 00:39:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-01 00:39:19,370 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-01 00:39:19,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:19,370 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-01 00:39:19,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 00:39:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-01 00:39:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 00:39:19,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:19,371 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-01 00:39:19,372 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:19,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:19,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-01 00:39:19,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:19,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:19,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:19,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:19,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:19,476 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:19,476 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 [2018-10-01 00:39:19,488 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:19,508 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-01 00:39:19,509 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:19,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:19,597 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:19,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 00:39:19,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:39:19,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:39:19,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:19,599 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-01 00:39:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:19,685 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 00:39:19,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 00:39:19,687 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-01 00:39:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:19,688 INFO L225 Difference]: With dead ends: 27 [2018-10-01 00:39:19,688 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 00:39:19,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 00:39:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 00:39:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 00:39:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-01 00:39:19,693 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-01 00:39:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:19,694 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-01 00:39:19,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:39:19,694 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-01 00:39:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-01 00:39:19,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:19,695 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-01 00:39:19,695 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:19,695 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:19,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-01 00:39:19,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:19,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:19,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:19,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:19,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:19,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:19,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:19,811 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:19,823 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:19,824 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:19,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:19,929 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:19,929 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-01 00:39:19,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 00:39:19,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 00:39:19,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:19,930 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-01 00:39:20,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:20,023 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 00:39:20,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 00:39:20,024 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-01 00:39:20,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:20,025 INFO L225 Difference]: With dead ends: 29 [2018-10-01 00:39:20,026 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 00:39:20,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 00:39:20,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-01 00:39:20,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 00:39:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-01 00:39:20,031 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-01 00:39:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:20,031 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-01 00:39:20,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 00:39:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-01 00:39:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 00:39:20,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:20,032 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-01 00:39:20,032 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:20,032 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:20,033 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-01 00:39:20,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:20,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:20,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:20,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:20,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:20,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:20,158 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:20,166 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:20,192 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-01 00:39:20,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:20,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:20,300 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:20,301 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 00:39:20,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:39:20,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:39:20,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:20,302 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-01 00:39:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:20,542 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 00:39:20,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 00:39:20,545 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-01 00:39:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:20,546 INFO L225 Difference]: With dead ends: 31 [2018-10-01 00:39:20,546 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 00:39:20,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:20,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 00:39:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 00:39:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 00:39:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-01 00:39:20,551 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-01 00:39:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:20,551 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-01 00:39:20,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:39:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-01 00:39:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 00:39:20,552 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:20,552 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-01 00:39:20,552 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:20,553 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:20,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-01 00:39:20,553 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:20,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:20,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:20,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:20,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:20,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:20,715 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 [2018-10-01 00:39:20,722 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:20,746 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 00:39:20,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:20,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:20,949 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:20,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-01 00:39:20,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 00:39:20,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 00:39:20,951 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:20,951 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-01 00:39:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:21,059 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 00:39:21,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 00:39:21,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-01 00:39:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:21,063 INFO L225 Difference]: With dead ends: 33 [2018-10-01 00:39:21,063 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 00:39:21,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 00:39:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 00:39:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 00:39:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-01 00:39:21,069 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-01 00:39:21,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:21,070 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-01 00:39:21,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 00:39:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-01 00:39:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 00:39:21,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:21,071 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-01 00:39:21,071 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:21,071 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:21,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-01 00:39:21,072 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:21,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:21,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:21,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:21,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:21,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:21,191 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 [2018-10-01 00:39:21,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:21,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:21,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:21,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 00:39:21,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:39:21,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:39:21,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:21,385 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-01 00:39:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:21,558 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 00:39:21,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 00:39:21,559 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-01 00:39:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:21,560 INFO L225 Difference]: With dead ends: 35 [2018-10-01 00:39:21,560 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 00:39:21,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:21,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 00:39:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-01 00:39:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-01 00:39:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-01 00:39:21,568 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-01 00:39:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:21,569 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-01 00:39:21,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:39:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-01 00:39:21,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 00:39:21,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:21,570 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-01 00:39:21,570 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:21,570 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:21,570 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-01 00:39:21,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:21,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:21,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:21,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:21,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:21,819 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:21,819 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 [2018-10-01 00:39:21,828 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:21,854 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:21,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:21,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:21,986 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:21,987 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 00:39:21,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 00:39:21,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 00:39:21,987 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:21,987 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-01 00:39:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:22,118 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 00:39:22,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 00:39:22,119 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-01 00:39:22,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:22,120 INFO L225 Difference]: With dead ends: 37 [2018-10-01 00:39:22,120 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 00:39:22,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 00:39:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-01 00:39:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 00:39:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-01 00:39:22,125 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-01 00:39:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:22,125 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-01 00:39:22,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 00:39:22,126 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-01 00:39:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 00:39:22,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:22,127 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-01 00:39:22,127 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:22,127 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:22,127 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-01 00:39:22,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:22,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:22,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:22,128 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:22,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:22,358 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:22,358 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:22,369 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:22,573 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-01 00:39:22,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:22,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:22,837 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:22,838 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 00:39:22,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:39:22,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:39:22,839 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:22,839 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-01 00:39:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:23,300 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 00:39:23,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 00:39:23,301 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-01 00:39:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:23,302 INFO L225 Difference]: With dead ends: 39 [2018-10-01 00:39:23,302 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 00:39:23,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 00:39:23,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 00:39:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 00:39:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-01 00:39:23,307 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-01 00:39:23,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:23,307 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-01 00:39:23,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:39:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-01 00:39:23,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-01 00:39:23,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:23,308 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-01 00:39:23,308 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:23,309 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:23,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-01 00:39:23,309 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:23,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:23,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:23,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:23,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:23,576 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:23,576 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:23,583 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:23,611 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:23,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:23,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:23,735 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:23,735 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 00:39:23,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 00:39:23,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 00:39:23,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:23,736 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-01 00:39:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:23,877 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 00:39:23,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 00:39:23,878 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-01 00:39:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:23,879 INFO L225 Difference]: With dead ends: 41 [2018-10-01 00:39:23,879 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 00:39:23,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:23,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 00:39:23,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-01 00:39:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 00:39:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-01 00:39:23,885 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-01 00:39:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:23,885 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-01 00:39:23,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 00:39:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-01 00:39:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 00:39:23,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:23,886 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-01 00:39:23,887 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:23,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:23,887 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-01 00:39:23,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:23,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:23,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:23,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:23,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:24,068 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:24,068 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 [2018-10-01 00:39:24,076 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:24,121 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-01 00:39:24,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:24,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:24,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:24,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 00:39:24,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:39:24,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:39:24,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:24,413 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-01 00:39:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:24,572 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 00:39:24,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 00:39:24,572 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-01 00:39:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:24,573 INFO L225 Difference]: With dead ends: 43 [2018-10-01 00:39:24,573 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 00:39:24,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 00:39:24,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 00:39:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 00:39:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-01 00:39:24,578 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-01 00:39:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:24,579 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-01 00:39:24,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:39:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-01 00:39:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-01 00:39:24,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:24,580 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-01 00:39:24,580 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:24,580 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:24,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-01 00:39:24,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:24,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:24,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:24,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:24,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:24,762 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:24,762 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:24,770 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:24,807 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 00:39:24,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:24,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:25,265 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:25,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-01 00:39:25,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 00:39:25,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 00:39:25,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:25,266 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-01 00:39:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:25,587 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 00:39:25,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 00:39:25,588 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-01 00:39:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:25,589 INFO L225 Difference]: With dead ends: 45 [2018-10-01 00:39:25,589 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 00:39:25,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 00:39:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 00:39:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 00:39:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-01 00:39:25,595 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-01 00:39:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:25,595 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-01 00:39:25,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 00:39:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-01 00:39:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 00:39:25,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:25,596 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-01 00:39:25,596 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:25,596 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:25,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-01 00:39:25,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:25,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:25,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:25,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:25,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:25,726 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:25,727 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 [2018-10-01 00:39:25,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:25,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:25,897 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:25,897 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 00:39:25,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:39:25,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:39:25,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:25,898 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-01 00:39:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:26,034 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 00:39:26,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 00:39:26,035 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-01 00:39:26,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:26,036 INFO L225 Difference]: With dead ends: 47 [2018-10-01 00:39:26,036 INFO L226 Difference]: Without dead ends: 45 [2018-10-01 00:39:26,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:26,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-01 00:39:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-01 00:39:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 00:39:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-01 00:39:26,042 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-01 00:39:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:26,042 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-01 00:39:26,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:39:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-01 00:39:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 00:39:26,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:26,044 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-01 00:39:26,044 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:26,044 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:26,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-01 00:39:26,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:26,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:26,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:26,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:26,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:26,279 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:26,279 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:26,293 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:26,323 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:26,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:26,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:26,472 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:26,472 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 00:39:26,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 00:39:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 00:39:26,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:26,473 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-01 00:39:26,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:26,598 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 00:39:26,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 00:39:26,599 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-01 00:39:26,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:26,600 INFO L225 Difference]: With dead ends: 49 [2018-10-01 00:39:26,600 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 00:39:26,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 00:39:26,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 00:39:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 00:39:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-01 00:39:26,605 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-01 00:39:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:26,605 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-01 00:39:26,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 00:39:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-01 00:39:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 00:39:26,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:26,606 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-01 00:39:26,606 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:26,607 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-01 00:39:26,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:26,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:26,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:26,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:26,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:27,299 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:27,299 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 [2018-10-01 00:39:27,307 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:27,439 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-01 00:39:27,439 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:27,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:27,609 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:27,609 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 00:39:27,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:39:27,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:39:27,610 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:27,610 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-01 00:39:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:27,827 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 00:39:27,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 00:39:27,830 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-01 00:39:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:27,831 INFO L225 Difference]: With dead ends: 51 [2018-10-01 00:39:27,831 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 00:39:27,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:39:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 00:39:27,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 00:39:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 00:39:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-01 00:39:27,836 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-01 00:39:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:27,836 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-01 00:39:27,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:39:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-01 00:39:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 00:39:27,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:27,837 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-01 00:39:27,837 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:27,838 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:27,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-01 00:39:27,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:27,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:27,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:27,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:27,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:28,034 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:28,035 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 [2018-10-01 00:39:28,043 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:28,063 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:28,063 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:28,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:28,234 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:28,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-01 00:39:28,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 00:39:28,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 00:39:28,235 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:28,235 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-01 00:39:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:28,456 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 00:39:28,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 00:39:28,456 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-01 00:39:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:28,457 INFO L225 Difference]: With dead ends: 53 [2018-10-01 00:39:28,457 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 00:39:28,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 00:39:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 00:39:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 00:39:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-01 00:39:28,462 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-01 00:39:28,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:28,463 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-01 00:39:28,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 00:39:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-01 00:39:28,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 00:39:28,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:28,463 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-01 00:39:28,464 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:28,464 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:28,464 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-01 00:39:28,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:28,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:28,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:28,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:28,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:28,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:28,808 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:28,815 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:28,933 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-01 00:39:28,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:28,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:29,094 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:29,094 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 00:39:29,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:39:29,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:39:29,094 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:29,094 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-01 00:39:29,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:29,190 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 00:39:29,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 00:39:29,190 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-01 00:39:29,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:29,191 INFO L225 Difference]: With dead ends: 55 [2018-10-01 00:39:29,191 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 00:39:29,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 00:39:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-01 00:39:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-01 00:39:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-01 00:39:29,194 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-01 00:39:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:29,195 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-01 00:39:29,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:39:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-01 00:39:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 00:39:29,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:29,195 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-01 00:39:29,197 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:29,197 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:29,197 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-01 00:39:29,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:29,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:29,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:29,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:29,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:29,647 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:29,647 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 [2018-10-01 00:39:29,654 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:29,738 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 00:39:29,739 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:29,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:30,030 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:30,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-01 00:39:30,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 00:39:30,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 00:39:30,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:30,031 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-01 00:39:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:30,167 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 00:39:30,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 00:39:30,168 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-01 00:39:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:30,169 INFO L225 Difference]: With dead ends: 57 [2018-10-01 00:39:30,169 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 00:39:30,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:39:30,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 00:39:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 00:39:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 00:39:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-01 00:39:30,174 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-01 00:39:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:30,174 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-01 00:39:30,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 00:39:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-01 00:39:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 00:39:30,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:30,175 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-01 00:39:30,175 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:30,175 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-01 00:39:30,175 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:30,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:30,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:30,176 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:30,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:30,386 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:30,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:30,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:30,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:30,572 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:30,572 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 00:39:30,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:39:30,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:39:30,573 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:30,573 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-01 00:39:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:30,739 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 00:39:30,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 00:39:30,739 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-01 00:39:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:30,740 INFO L225 Difference]: With dead ends: 59 [2018-10-01 00:39:30,740 INFO L226 Difference]: Without dead ends: 57 [2018-10-01 00:39:30,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-01 00:39:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-01 00:39:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-01 00:39:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-01 00:39:30,743 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-01 00:39:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:30,744 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-01 00:39:30,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:39:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-01 00:39:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 00:39:30,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:30,745 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-01 00:39:30,745 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:30,745 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:30,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-01 00:39:30,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:30,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:30,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:30,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:30,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:31,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:31,557 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:31,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:31,588 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:31,588 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:31,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:31,771 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:31,772 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 00:39:31,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 00:39:31,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 00:39:31,772 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:31,773 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-01 00:39:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:31,961 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 00:39:31,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 00:39:31,961 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-01 00:39:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:31,962 INFO L225 Difference]: With dead ends: 61 [2018-10-01 00:39:31,962 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 00:39:31,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:39:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 00:39:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 00:39:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 00:39:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-01 00:39:31,966 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-01 00:39:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:31,966 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-01 00:39:31,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 00:39:31,967 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-01 00:39:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 00:39:31,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:31,967 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-01 00:39:31,968 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:31,968 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:31,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-01 00:39:31,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:31,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:31,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:31,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:31,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:32,361 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:32,361 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 [2018-10-01 00:39:32,375 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:32,456 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-01 00:39:32,457 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:32,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:32,598 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:32,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 00:39:32,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:39:32,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:39:32,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:32,599 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-01 00:39:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:32,833 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 00:39:32,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 00:39:32,834 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-01 00:39:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:32,835 INFO L225 Difference]: With dead ends: 63 [2018-10-01 00:39:32,835 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 00:39:32,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 00:39:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 00:39:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 00:39:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-01 00:39:32,839 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-01 00:39:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:32,839 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-01 00:39:32,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:39:32,839 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-01 00:39:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-01 00:39:32,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:32,840 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-01 00:39:32,840 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:32,840 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:32,840 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-01 00:39:32,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:32,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:32,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:32,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:32,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:33,153 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:33,154 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 [2018-10-01 00:39:33,163 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:33,188 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:33,188 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:33,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:33,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:33,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 00:39:33,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 00:39:33,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 00:39:33,316 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:33,316 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-01 00:39:33,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:33,665 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 00:39:33,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 00:39:33,666 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-01 00:39:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:33,667 INFO L225 Difference]: With dead ends: 65 [2018-10-01 00:39:33,667 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 00:39:33,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:33,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 00:39:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-01 00:39:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 00:39:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-01 00:39:33,671 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-01 00:39:33,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:33,671 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-01 00:39:33,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 00:39:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-01 00:39:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 00:39:33,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:33,672 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-01 00:39:33,672 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:33,672 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:33,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-01 00:39:33,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:33,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:33,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:33,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:33,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:33,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:33,900 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 [2018-10-01 00:39:33,907 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:34,074 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-01 00:39:34,074 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:34,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:34,223 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:34,223 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 00:39:34,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:39:34,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:39:34,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:34,224 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-01 00:39:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:34,380 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 00:39:34,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 00:39:34,381 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-01 00:39:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:34,382 INFO L225 Difference]: With dead ends: 67 [2018-10-01 00:39:34,382 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 00:39:34,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 00:39:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 00:39:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 00:39:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-01 00:39:34,386 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-01 00:39:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:34,386 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-01 00:39:34,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:39:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-01 00:39:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-01 00:39:34,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:34,387 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-01 00:39:34,387 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:34,387 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:34,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-01 00:39:34,388 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:34,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:34,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:34,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:34,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:34,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:34,592 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 [2018-10-01 00:39:34,601 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:34,694 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 00:39:34,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:34,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:34,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:34,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-01 00:39:34,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 00:39:34,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 00:39:34,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:34,856 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-01 00:39:35,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:35,020 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 00:39:35,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 00:39:35,021 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-01 00:39:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:35,021 INFO L225 Difference]: With dead ends: 69 [2018-10-01 00:39:35,021 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 00:39:35,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 00:39:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 00:39:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 00:39:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-01 00:39:35,025 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-01 00:39:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:35,025 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-01 00:39:35,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 00:39:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-01 00:39:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 00:39:35,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:35,026 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-01 00:39:35,027 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:35,027 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:35,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-01 00:39:35,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:35,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:35,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:35,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:35,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:35,244 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:35,244 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 [2018-10-01 00:39:35,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:35,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:35,534 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:35,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 00:39:35,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:39:35,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:39:35,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:35,535 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-01 00:39:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:35,690 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 00:39:35,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 00:39:35,690 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-01 00:39:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:35,691 INFO L225 Difference]: With dead ends: 71 [2018-10-01 00:39:35,691 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 00:39:35,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 00:39:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-01 00:39:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 00:39:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-01 00:39:35,695 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-01 00:39:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:35,695 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-01 00:39:35,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:39:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-01 00:39:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 00:39:35,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:35,696 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-01 00:39:35,696 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:35,696 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:35,696 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-01 00:39:35,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:35,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:35,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:35,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:35,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:35,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:35,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:35,973 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:35,998 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:35,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:36,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:36,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:36,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 00:39:36,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 00:39:36,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 00:39:36,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:36,159 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-01 00:39:36,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:36,381 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 00:39:36,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 00:39:36,381 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-01 00:39:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:36,382 INFO L225 Difference]: With dead ends: 73 [2018-10-01 00:39:36,382 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 00:39:36,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 00:39:36,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 00:39:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 00:39:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-01 00:39:36,386 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-01 00:39:36,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:36,387 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-01 00:39:36,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 00:39:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-01 00:39:36,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 00:39:36,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:36,387 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-01 00:39:36,388 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:36,388 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:36,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-01 00:39:36,388 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:36,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:36,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:36,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:36,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:36,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:36,624 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:36,632 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:36,750 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-01 00:39:36,750 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:36,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:36,918 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:36,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 00:39:36,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:39:36,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:39:36,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:36,919 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-01 00:39:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:37,101 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 00:39:37,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 00:39:37,102 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-01 00:39:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:37,103 INFO L225 Difference]: With dead ends: 75 [2018-10-01 00:39:37,103 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 00:39:37,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 00:39:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 00:39:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 00:39:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-01 00:39:37,107 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-01 00:39:37,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:37,107 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-01 00:39:37,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:39:37,107 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-01 00:39:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 00:39:37,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:37,108 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-01 00:39:37,108 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:37,108 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:37,108 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-01 00:39:37,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:37,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:37,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:37,109 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:37,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:37,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:37,430 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 [2018-10-01 00:39:37,439 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:37,468 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:37,469 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:37,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:37,632 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:37,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 00:39:37,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 00:39:37,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 00:39:37,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:37,633 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-01 00:39:37,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:37,881 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 00:39:37,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 00:39:37,882 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-01 00:39:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:37,882 INFO L225 Difference]: With dead ends: 77 [2018-10-01 00:39:37,883 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 00:39:37,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 00:39:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-01 00:39:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 00:39:37,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-01 00:39:37,887 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-01 00:39:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:37,887 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-01 00:39:37,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 00:39:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-01 00:39:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 00:39:37,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:37,888 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-01 00:39:37,888 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:37,888 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:37,888 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-01 00:39:37,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:37,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:37,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:37,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:37,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:38,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:38,178 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:38,186 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:38,494 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-01 00:39:38,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:38,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:38,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:38,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 00:39:38,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:39:38,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:39:38,753 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:38,753 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-01 00:39:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:39,023 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 00:39:39,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 00:39:39,023 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-01 00:39:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:39,024 INFO L225 Difference]: With dead ends: 79 [2018-10-01 00:39:39,024 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 00:39:39,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 00:39:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 00:39:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 00:39:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-01 00:39:39,028 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-01 00:39:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:39,028 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-01 00:39:39,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:39:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-01 00:39:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-01 00:39:39,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:39,029 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-01 00:39:39,029 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:39,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-01 00:39:39,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:39,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:39,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:39,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:39,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:39,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:39,303 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:39,311 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:39,444 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 00:39:39,444 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:39,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:40,569 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:40,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-01 00:39:40,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 00:39:40,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 00:39:40,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:40,570 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-01 00:39:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:40,831 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 00:39:40,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 00:39:40,831 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-01 00:39:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:40,833 INFO L225 Difference]: With dead ends: 81 [2018-10-01 00:39:40,833 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 00:39:40,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:39:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 00:39:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-01 00:39:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 00:39:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-01 00:39:40,838 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-01 00:39:40,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:40,838 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-01 00:39:40,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 00:39:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-01 00:39:40,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 00:39:40,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:40,839 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-01 00:39:40,839 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:40,839 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:40,840 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-01 00:39:40,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:40,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:40,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:40,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:40,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:41,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:41,159 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 [2018-10-01 00:39:41,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:41,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:41,378 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:41,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 00:39:41,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:39:41,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:39:41,379 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:41,379 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-01 00:39:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:41,656 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-01 00:39:41,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 00:39:41,656 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-01 00:39:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:41,657 INFO L225 Difference]: With dead ends: 83 [2018-10-01 00:39:41,657 INFO L226 Difference]: Without dead ends: 81 [2018-10-01 00:39:41,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-01 00:39:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-01 00:39:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-01 00:39:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-01 00:39:41,661 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-01 00:39:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:41,661 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-01 00:39:41,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:39:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-01 00:39:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 00:39:41,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:41,662 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-01 00:39:41,662 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:41,662 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:41,662 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-01 00:39:41,662 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:41,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:41,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:41,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:41,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:42,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:42,684 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:42,692 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:42,723 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:42,723 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:42,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:42,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:42,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 00:39:42,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 00:39:42,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 00:39:42,931 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:42,931 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-01 00:39:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:43,199 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 00:39:43,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 00:39:43,199 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-01 00:39:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:43,200 INFO L225 Difference]: With dead ends: 85 [2018-10-01 00:39:43,200 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 00:39:43,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:39:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 00:39:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-01 00:39:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 00:39:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-01 00:39:43,204 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-01 00:39:43,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:43,204 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-01 00:39:43,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 00:39:43,204 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-01 00:39:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 00:39:43,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:43,205 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-01 00:39:43,205 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:43,205 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:43,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-01 00:39:43,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:43,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:43,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:43,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:43,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:43,587 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:43,587 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 [2018-10-01 00:39:43,594 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:43,785 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-01 00:39:43,786 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:43,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:44,069 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:44,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 00:39:44,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:39:44,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:39:44,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:44,070 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-01 00:39:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:44,369 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-01 00:39:44,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 00:39:44,369 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-01 00:39:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:44,370 INFO L225 Difference]: With dead ends: 87 [2018-10-01 00:39:44,370 INFO L226 Difference]: Without dead ends: 85 [2018-10-01 00:39:44,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-01 00:39:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-01 00:39:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 00:39:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-01 00:39:44,373 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-01 00:39:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:44,373 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-01 00:39:44,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:39:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-01 00:39:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-01 00:39:44,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:44,374 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-01 00:39:44,374 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:44,374 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:44,374 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-01 00:39:44,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:44,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:44,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:44,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:44,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:45,057 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:45,057 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:45,064 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:45,120 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:45,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:45,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:45,671 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:45,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 00:39:45,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 00:39:45,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 00:39:45,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:45,672 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-01 00:39:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:46,013 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 00:39:46,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 00:39:46,014 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-01 00:39:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:46,015 INFO L225 Difference]: With dead ends: 89 [2018-10-01 00:39:46,015 INFO L226 Difference]: Without dead ends: 87 [2018-10-01 00:39:46,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:39:46,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-01 00:39:46,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-01 00:39:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-01 00:39:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-01 00:39:46,021 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-01 00:39:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:46,022 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-01 00:39:46,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 00:39:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-01 00:39:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 00:39:46,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:46,023 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-01 00:39:46,023 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:46,023 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:46,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-01 00:39:46,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:46,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:46,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:46,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:46,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:46,958 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:46,959 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:46,967 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:47,489 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-01 00:39:47,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:47,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:47,711 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:47,711 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 00:39:47,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:39:47,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:39:47,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:47,712 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-01 00:39:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:47,993 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-01 00:39:47,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 00:39:47,993 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-01 00:39:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:47,994 INFO L225 Difference]: With dead ends: 91 [2018-10-01 00:39:47,994 INFO L226 Difference]: Without dead ends: 89 [2018-10-01 00:39:47,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:39:47,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-01 00:39:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-01 00:39:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-01 00:39:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-01 00:39:47,997 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-01 00:39:47,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:47,998 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-01 00:39:47,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:39:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-01 00:39:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 00:39:47,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:47,998 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-01 00:39:47,999 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:47,999 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:47,999 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-01 00:39:47,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:47,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:48,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:48,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:48,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:48,378 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:48,378 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:48,387 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:48,583 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 00:39:48,584 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:48,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:48,853 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:48,853 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-01 00:39:48,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 00:39:48,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 00:39:48,854 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:48,855 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-01 00:39:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:49,139 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 00:39:49,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 00:39:49,140 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-01 00:39:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:49,141 INFO L225 Difference]: With dead ends: 93 [2018-10-01 00:39:49,141 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 00:39:49,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:49,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 00:39:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 00:39:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 00:39:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-01 00:39:49,145 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-01 00:39:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:49,145 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-01 00:39:49,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 00:39:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-01 00:39:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-01 00:39:49,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:49,146 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-01 00:39:49,147 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:49,147 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-01 00:39:49,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:49,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:49,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:49,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:49,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:49,491 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:49,491 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 [2018-10-01 00:39:49,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:49,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:49,718 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:49,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 00:39:49,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:39:49,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:39:49,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:49,719 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-01 00:39:50,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:50,018 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-01 00:39:50,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 00:39:50,018 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-01 00:39:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:50,019 INFO L225 Difference]: With dead ends: 95 [2018-10-01 00:39:50,019 INFO L226 Difference]: Without dead ends: 93 [2018-10-01 00:39:50,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:50,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-01 00:39:50,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-01 00:39:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-01 00:39:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-01 00:39:50,022 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-01 00:39:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:50,022 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-01 00:39:50,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:39:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-01 00:39:50,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 00:39:50,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:50,023 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-01 00:39:50,023 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:50,023 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:50,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-01 00:39:50,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:50,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:50,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:50,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:50,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:50,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:50,349 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:50,359 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:50,392 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:50,392 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:50,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:50,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:50,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 00:39:50,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 00:39:50,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 00:39:50,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:50,728 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-01 00:39:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:51,190 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 00:39:51,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 00:39:51,190 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-01 00:39:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:51,191 INFO L225 Difference]: With dead ends: 97 [2018-10-01 00:39:51,191 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 00:39:51,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:51,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 00:39:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-01 00:39:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 00:39:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-01 00:39:51,195 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-01 00:39:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:51,196 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-01 00:39:51,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 00:39:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-01 00:39:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-01 00:39:51,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:51,196 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-01 00:39:51,197 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:51,197 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-01 00:39:51,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:51,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:51,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:51,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:51,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:51,593 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:51,593 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 [2018-10-01 00:39:51,602 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:51,859 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-01 00:39:51,859 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:51,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:52,072 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:52,072 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 00:39:52,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:39:52,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:39:52,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:52,073 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-01 00:39:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:52,318 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-01 00:39:52,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 00:39:52,318 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-01 00:39:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:52,319 INFO L225 Difference]: With dead ends: 99 [2018-10-01 00:39:52,320 INFO L226 Difference]: Without dead ends: 97 [2018-10-01 00:39:52,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-01 00:39:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-01 00:39:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-01 00:39:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-01 00:39:52,323 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-01 00:39:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:52,324 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-01 00:39:52,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:39:52,324 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-01 00:39:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-01 00:39:52,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:52,324 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-01 00:39:52,324 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:52,324 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:52,325 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-01 00:39:52,325 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:52,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:52,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:52,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:52,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:52,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:52,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:52,674 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:52,711 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:52,712 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:52,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:52,922 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:52,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-01 00:39:52,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 00:39:52,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 00:39:52,923 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:52,923 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-01 00:39:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:53,236 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 00:39:53,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 00:39:53,236 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-01 00:39:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:53,237 INFO L225 Difference]: With dead ends: 101 [2018-10-01 00:39:53,237 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 00:39:53,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:53,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 00:39:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-01 00:39:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 00:39:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-01 00:39:53,240 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-01 00:39:53,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:53,240 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-01 00:39:53,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 00:39:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-01 00:39:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 00:39:53,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:53,241 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-01 00:39:53,242 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:53,242 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:53,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-01 00:39:53,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:53,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:53,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:53,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:53,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:53,568 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:53,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:53,576 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:54,416 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-01 00:39:54,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:54,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:54,609 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:54,609 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 00:39:54,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:39:54,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:39:54,610 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:54,610 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-01 00:39:54,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:54,895 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-01 00:39:54,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 00:39:54,897 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-01 00:39:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:54,898 INFO L225 Difference]: With dead ends: 103 [2018-10-01 00:39:54,898 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 00:39:54,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:54,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 00:39:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 00:39:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 00:39:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-01 00:39:54,901 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-01 00:39:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:54,902 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-01 00:39:54,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:39:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-01 00:39:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-01 00:39:54,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:54,903 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-01 00:39:54,903 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:54,903 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:54,903 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-01 00:39:54,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:54,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:54,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:54,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:54,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:55,262 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:55,262 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:55,282 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:55,545 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 00:39:55,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:55,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:55,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:55,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-01 00:39:55,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 00:39:55,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 00:39:55,741 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:55,741 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-01 00:39:56,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:56,002 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 00:39:56,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 00:39:56,003 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-01 00:39:56,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:56,004 INFO L225 Difference]: With dead ends: 105 [2018-10-01 00:39:56,004 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 00:39:56,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:56,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 00:39:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-01 00:39:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 00:39:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-01 00:39:56,009 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-01 00:39:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:56,009 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-01 00:39:56,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 00:39:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-01 00:39:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 00:39:56,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:56,010 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-01 00:39:56,011 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:56,011 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:56,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-01 00:39:56,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:56,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:56,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:56,399 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:56,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:56,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:56,647 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:56,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 00:39:56,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:39:56,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:39:56,648 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:56,648 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-01 00:39:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:56,915 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-01 00:39:56,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 00:39:56,915 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-01 00:39:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:56,916 INFO L225 Difference]: With dead ends: 107 [2018-10-01 00:39:56,916 INFO L226 Difference]: Without dead ends: 105 [2018-10-01 00:39:56,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:56,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-01 00:39:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-01 00:39:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-01 00:39:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-01 00:39:56,919 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-01 00:39:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:56,920 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-01 00:39:56,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:39:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-01 00:39:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-01 00:39:56,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:56,921 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-01 00:39:56,921 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:56,921 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:56,921 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-01 00:39:56,921 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:56,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:56,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:56,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:57,698 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:57,698 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 [2018-10-01 00:39:57,706 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:57,752 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:57,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:57,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:58,080 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:58,081 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 00:39:58,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 00:39:58,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 00:39:58,081 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:58,082 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-01 00:39:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:58,543 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 00:39:58,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 00:39:58,544 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-01 00:39:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:58,545 INFO L225 Difference]: With dead ends: 109 [2018-10-01 00:39:58,545 INFO L226 Difference]: Without dead ends: 107 [2018-10-01 00:39:58,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:39:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-01 00:39:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-01 00:39:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-01 00:39:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-01 00:39:58,549 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-01 00:39:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:58,549 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-01 00:39:58,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 00:39:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-01 00:39:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-01 00:39:58,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:58,550 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-01 00:39:58,550 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:58,550 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:58,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-01 00:39:58,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:58,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:58,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:58,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:58,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:59,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:59,397 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 [2018-10-01 00:39:59,404 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:59,772 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-01 00:39:59,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:59,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:00,183 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:00,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 00:40:00,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:40:00,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:40:00,185 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:00,185 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-01 00:40:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:00,509 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-01 00:40:00,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 00:40:00,510 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-01 00:40:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:00,511 INFO L225 Difference]: With dead ends: 111 [2018-10-01 00:40:00,511 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 00:40:00,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:40:00,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 00:40:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-01 00:40:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 00:40:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-01 00:40:00,514 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-01 00:40:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:00,515 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-01 00:40:00,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:40:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-01 00:40:00,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 00:40:00,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:00,516 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-01 00:40:00,516 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:00,516 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:00,516 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-01 00:40:00,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:00,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:00,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:00,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:00,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:01,231 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:01,231 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) [2018-10-01 00:40:01,246 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:40:01,302 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:01,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:01,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:01,505 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:01,506 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 00:40:01,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 00:40:01,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 00:40:01,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:01,506 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-01 00:40:01,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:01,833 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 00:40:01,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 00:40:01,834 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-01 00:40:01,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:01,835 INFO L225 Difference]: With dead ends: 113 [2018-10-01 00:40:01,835 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 00:40:01,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 00:40:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-01 00:40:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 00:40:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-01 00:40:01,839 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-01 00:40:01,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:01,839 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-01 00:40:01,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 00:40:01,839 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-01 00:40:01,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 00:40:01,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:01,840 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-01 00:40:01,840 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:01,840 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:01,840 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-01 00:40:01,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:01,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:01,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:01,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:01,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:02,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:02,978 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:02,993 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:04,350 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-01 00:40:04,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:04,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:04,670 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:04,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 00:40:04,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:40:04,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:40:04,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:04,671 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-01 00:40:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:04,879 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-01 00:40:04,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 00:40:04,880 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-01 00:40:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:04,881 INFO L225 Difference]: With dead ends: 115 [2018-10-01 00:40:04,881 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 00:40:04,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:40:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 00:40:04,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-01 00:40:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-01 00:40:04,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-01 00:40:04,885 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-01 00:40:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:04,886 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-01 00:40:04,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:40:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-01 00:40:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-01 00:40:04,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:04,887 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-01 00:40:04,887 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:04,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:04,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-01 00:40:04,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:04,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:04,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:04,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:04,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:06,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:06,101 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 [2018-10-01 00:40:06,108 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:06,494 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 00:40:06,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:06,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:06,861 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:06,861 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-01 00:40:06,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 00:40:06,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 00:40:06,862 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:06,862 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-01 00:40:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:07,273 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 00:40:07,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 00:40:07,273 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-01 00:40:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:07,274 INFO L225 Difference]: With dead ends: 117 [2018-10-01 00:40:07,275 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 00:40:07,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:40:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 00:40:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-01 00:40:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 00:40:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-01 00:40:07,278 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-01 00:40:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:07,278 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-01 00:40:07,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 00:40:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-01 00:40:07,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-01 00:40:07,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:07,279 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-01 00:40:07,279 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:07,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:07,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-01 00:40:07,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:07,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:07,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:07,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:07,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:08,182 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:08,182 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 [2018-10-01 00:40:08,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:08,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:08,457 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:08,457 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 00:40:08,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:40:08,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:40:08,458 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:08,458 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-01 00:40:09,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:09,168 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-01 00:40:09,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 00:40:09,168 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-01 00:40:09,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:09,169 INFO L225 Difference]: With dead ends: 119 [2018-10-01 00:40:09,169 INFO L226 Difference]: Without dead ends: 117 [2018-10-01 00:40:09,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:40:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-01 00:40:09,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-01 00:40:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-01 00:40:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-01 00:40:09,174 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-01 00:40:09,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:09,175 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-01 00:40:09,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:40:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-01 00:40:09,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 00:40:09,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:09,176 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-01 00:40:09,176 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:09,176 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:09,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-01 00:40:09,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:09,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:09,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:09,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:09,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:09,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:09,683 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 [2018-10-01 00:40:09,691 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:09,736 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:09,736 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:09,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:10,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:10,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 00:40:10,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 00:40:10,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 00:40:10,802 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:10,803 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-01 00:40:11,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:11,156 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 00:40:11,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 00:40:11,156 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-01 00:40:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:11,157 INFO L225 Difference]: With dead ends: 121 [2018-10-01 00:40:11,157 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 00:40:11,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:40:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 00:40:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-01 00:40:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 00:40:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-01 00:40:11,161 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-01 00:40:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:11,161 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-01 00:40:11,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 00:40:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-01 00:40:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 00:40:11,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:11,162 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-01 00:40:11,162 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:11,163 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:11,163 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-01 00:40:11,163 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:11,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:11,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:11,164 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:11,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:11,694 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:11,694 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:11,701 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:12,241 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-01 00:40:12,241 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:12,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:14,418 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:14,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 00:40:14,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:40:14,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:40:14,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:14,420 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-01 00:40:14,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:14,820 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-01 00:40:14,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 00:40:14,820 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-01 00:40:14,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:14,821 INFO L225 Difference]: With dead ends: 123 [2018-10-01 00:40:14,821 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 00:40:14,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:40:14,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 00:40:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 00:40:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 00:40:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-01 00:40:14,825 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-01 00:40:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:14,825 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-01 00:40:14,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:40:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-01 00:40:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-01 00:40:14,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:14,826 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-01 00:40:14,826 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:14,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:14,827 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-01 00:40:14,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:14,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:14,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:14,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:14,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:15,197 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:15,197 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 [2018-10-01 00:40:15,207 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:15,253 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:15,253 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:15,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:15,538 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:15,539 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 00:40:15,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 00:40:15,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 00:40:15,540 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:15,540 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-01 00:40:15,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:15,902 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 00:40:15,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 00:40:15,903 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-01 00:40:15,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:15,904 INFO L225 Difference]: With dead ends: 125 [2018-10-01 00:40:15,904 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 00:40:15,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 00:40:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-01 00:40:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-01 00:40:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-01 00:40:15,906 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-01 00:40:15,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:15,907 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-01 00:40:15,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 00:40:15,907 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-01 00:40:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 00:40:15,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:15,907 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-01 00:40:15,908 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:15,908 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:15,908 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-01 00:40:15,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:15,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:15,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:15,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:15,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:16,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:16,251 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 [2018-10-01 00:40:16,258 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:18,222 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-01 00:40:18,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:18,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:18,608 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:18,609 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 00:40:18,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:40:18,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:40:18,610 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:18,610 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-01 00:40:18,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:18,998 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-01 00:40:18,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 00:40:18,999 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-01 00:40:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:19,000 INFO L225 Difference]: With dead ends: 127 [2018-10-01 00:40:19,000 INFO L226 Difference]: Without dead ends: 125 [2018-10-01 00:40:19,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:19,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-01 00:40:19,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-01 00:40:19,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-01 00:40:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-01 00:40:19,002 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-01 00:40:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:19,003 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-01 00:40:19,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:40:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-01 00:40:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-01 00:40:19,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:19,003 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-01 00:40:19,004 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:19,004 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:19,004 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-01 00:40:19,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:19,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:19,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:19,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:19,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:20,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:20,154 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 [2018-10-01 00:40:20,162 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:20,683 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 00:40:20,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:20,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:20,911 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:20,911 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-01 00:40:20,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 00:40:20,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 00:40:20,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:20,912 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-01 00:40:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:21,315 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 00:40:21,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 00:40:21,316 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-01 00:40:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:21,316 INFO L225 Difference]: With dead ends: 129 [2018-10-01 00:40:21,316 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 00:40:21,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:40:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 00:40:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-01 00:40:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 00:40:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-01 00:40:21,319 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-01 00:40:21,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:21,319 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-01 00:40:21,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 00:40:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-01 00:40:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-01 00:40:21,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:21,320 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-01 00:40:21,320 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:21,320 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-01 00:40:21,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:21,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:21,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:21,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:21,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:21,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:21,654 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:21,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:21,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:21,955 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:21,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 00:40:21,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:40:21,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:40:21,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:21,956 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-01 00:40:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:22,317 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-01 00:40:22,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 00:40:22,318 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-01 00:40:22,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:22,319 INFO L225 Difference]: With dead ends: 131 [2018-10-01 00:40:22,319 INFO L226 Difference]: Without dead ends: 129 [2018-10-01 00:40:22,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-01 00:40:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-01 00:40:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-01 00:40:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-01 00:40:22,321 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-01 00:40:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:22,322 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-01 00:40:22,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:40:22,322 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-01 00:40:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 00:40:22,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:22,323 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-01 00:40:22,323 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:22,323 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:22,323 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-01 00:40:22,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:22,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:22,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:22,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:22,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:22,662 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:22,662 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:22,670 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:22,717 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:22,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:22,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:22,988 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:22,989 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 00:40:22,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 00:40:22,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 00:40:22,990 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:22,990 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-01 00:40:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:23,326 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 00:40:23,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 00:40:23,327 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-01 00:40:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:23,328 INFO L225 Difference]: With dead ends: 133 [2018-10-01 00:40:23,328 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 00:40:23,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 00:40:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 00:40:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 00:40:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-01 00:40:23,332 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-01 00:40:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:23,332 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-01 00:40:23,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 00:40:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-01 00:40:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-01 00:40:23,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:23,333 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-01 00:40:23,333 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:23,334 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-01 00:40:23,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:23,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:23,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:23,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:23,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:23,776 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:23,777 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 [2018-10-01 00:40:23,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:24,572 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-01 00:40:24,572 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:24,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:25,015 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:25,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 00:40:25,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:40:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:40:25,016 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:25,016 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-01 00:40:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:25,363 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-01 00:40:25,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 00:40:25,364 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-01 00:40:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:25,364 INFO L225 Difference]: With dead ends: 135 [2018-10-01 00:40:25,364 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 00:40:25,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 00:40:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-01 00:40:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-01 00:40:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-01 00:40:25,368 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-01 00:40:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:25,368 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-01 00:40:25,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:40:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-01 00:40:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-01 00:40:25,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:25,369 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-01 00:40:25,370 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:25,370 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-01 00:40:25,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:25,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:25,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:25,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:25,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:25,713 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:25,713 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 [2018-10-01 00:40:25,721 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:25,788 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:25,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:25,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:26,262 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:26,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 00:40:26,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 00:40:26,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 00:40:26,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:26,263 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-01 00:40:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:26,680 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 00:40:26,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 00:40:26,680 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-01 00:40:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:26,681 INFO L225 Difference]: With dead ends: 137 [2018-10-01 00:40:26,681 INFO L226 Difference]: Without dead ends: 135 [2018-10-01 00:40:26,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-01 00:40:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-01 00:40:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 00:40:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-01 00:40:26,685 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-01 00:40:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:26,685 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-01 00:40:26,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 00:40:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-01 00:40:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 00:40:26,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:26,686 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-01 00:40:26,687 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:26,687 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:26,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-01 00:40:26,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:26,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:26,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:26,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:26,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:27,038 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:27,038 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:27,045 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:29,865 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-01 00:40:29,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:29,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:30,328 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:30,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 00:40:30,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:40:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:40:30,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:30,329 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-01 00:40:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:30,755 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-01 00:40:30,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 00:40:30,756 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-01 00:40:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:30,757 INFO L225 Difference]: With dead ends: 139 [2018-10-01 00:40:30,757 INFO L226 Difference]: Without dead ends: 137 [2018-10-01 00:40:30,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:30,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-01 00:40:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-01 00:40:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-01 00:40:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-01 00:40:30,760 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-01 00:40:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:30,760 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-01 00:40:30,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:40:30,760 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-01 00:40:30,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-01 00:40:30,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:30,761 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-01 00:40:30,761 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:30,761 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-01 00:40:30,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:30,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:30,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:30,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:30,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:31,132 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:31,132 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 [2018-10-01 00:40:31,139 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:31,843 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 00:40:31,843 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:31,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:32,091 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:32,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-01 00:40:32,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 00:40:32,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 00:40:32,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:32,092 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-01 00:40:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:32,462 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 00:40:32,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 00:40:32,463 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-01 00:40:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:32,464 INFO L225 Difference]: With dead ends: 141 [2018-10-01 00:40:32,464 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 00:40:32,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 00:40:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-01 00:40:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 00:40:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-01 00:40:32,467 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-01 00:40:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:32,467 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-01 00:40:32,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 00:40:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-01 00:40:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 00:40:32,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:32,468 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-01 00:40:32,468 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:32,468 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:32,469 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-01 00:40:32,469 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:32,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:32,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:32,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:32,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:32,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:32,817 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 [2018-10-01 00:40:32,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:32,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:33,845 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:33,845 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 00:40:33,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 00:40:33,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 00:40:33,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:33,846 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-01 00:40:34,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:34,303 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-01 00:40:34,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 00:40:34,304 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-01 00:40:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:34,304 INFO L225 Difference]: With dead ends: 143 [2018-10-01 00:40:34,304 INFO L226 Difference]: Without dead ends: 141 [2018-10-01 00:40:34,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:40:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-01 00:40:34,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-01 00:40:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-01 00:40:34,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-01 00:40:34,309 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-01 00:40:34,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:34,309 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-01 00:40:34,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 00:40:34,309 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-01 00:40:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 00:40:34,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:34,310 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-01 00:40:34,310 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:34,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:34,310 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-01 00:40:34,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:34,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:34,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:34,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:34,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:34,696 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:34,696 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 [2018-10-01 00:40:34,704 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:34,752 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:34,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:34,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:35,275 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:35,275 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 00:40:35,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 00:40:35,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 00:40:35,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:35,276 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-01 00:40:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:35,757 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 00:40:35,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 00:40:35,758 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-01 00:40:35,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:35,759 INFO L225 Difference]: With dead ends: 145 [2018-10-01 00:40:35,759 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 00:40:35,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 00:40:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-01 00:40:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 00:40:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-01 00:40:35,762 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-01 00:40:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:35,763 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-01 00:40:35,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 00:40:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-01 00:40:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 00:40:35,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:35,764 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-01 00:40:35,764 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:35,764 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-01 00:40:35,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:35,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:35,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:35,765 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:35,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:36,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:36,349 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:36,356 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:37,373 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-01 00:40:37,374 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:37,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:37,873 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:37,873 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 00:40:37,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:40:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:40:37,874 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:37,874 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-01 00:40:38,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:38,344 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-01 00:40:38,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 00:40:38,344 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-01 00:40:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:38,345 INFO L225 Difference]: With dead ends: 147 [2018-10-01 00:40:38,345 INFO L226 Difference]: Without dead ends: 145 [2018-10-01 00:40:38,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:40:38,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-01 00:40:38,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-01 00:40:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 00:40:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-01 00:40:38,348 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-01 00:40:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:38,349 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-01 00:40:38,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:40:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-01 00:40:38,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-01 00:40:38,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:38,350 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-01 00:40:38,350 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:38,350 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:38,350 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-01 00:40:38,350 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:38,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:38,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:38,351 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:38,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:38,722 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:38,722 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 [2018-10-01 00:40:38,730 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:38,781 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:38,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:38,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:39,048 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:39,048 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 00:40:39,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 00:40:39,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 00:40:39,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:39,049 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-10-01 00:40:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:39,539 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 00:40:39,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 00:40:39,539 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-10-01 00:40:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:39,540 INFO L225 Difference]: With dead ends: 149 [2018-10-01 00:40:39,540 INFO L226 Difference]: Without dead ends: 147 [2018-10-01 00:40:39,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-01 00:40:39,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-01 00:40:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-01 00:40:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-01 00:40:39,544 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-10-01 00:40:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:39,544 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-01 00:40:39,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 00:40:39,544 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-01 00:40:39,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 00:40:39,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:39,545 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-01 00:40:39,546 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:39,546 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:39,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-10-01 00:40:39,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:39,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:39,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:39,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:39,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:39,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:39,984 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 [2018-10-01 00:40:39,991 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:43,824 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-01 00:40:43,824 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:43,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:44,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:44,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 00:40:44,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:40:44,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:40:44,133 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:44,133 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-10-01 00:40:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:44,657 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-01 00:40:44,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 00:40:44,657 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-01 00:40:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:44,658 INFO L225 Difference]: With dead ends: 151 [2018-10-01 00:40:44,658 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 00:40:44,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 00:40:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-01 00:40:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 00:40:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-01 00:40:44,662 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-10-01 00:40:44,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:44,662 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-01 00:40:44,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:40:44,662 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-01 00:40:44,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 00:40:44,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:44,663 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-10-01 00:40:44,663 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:44,664 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:44,664 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-10-01 00:40:44,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:44,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:44,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:44,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:44,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:45,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:45,100 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 [2018-10-01 00:40:45,107 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:46,053 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 00:40:46,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:46,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:46,367 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:46,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-01 00:40:46,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 00:40:46,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 00:40:46,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:46,369 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-10-01 00:40:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:46,715 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 00:40:46,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 00:40:46,715 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-10-01 00:40:46,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:46,717 INFO L225 Difference]: With dead ends: 153 [2018-10-01 00:40:46,717 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 00:40:46,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 00:40:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 00:40:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 00:40:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-01 00:40:46,721 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-10-01 00:40:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:46,721 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-01 00:40:46,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 00:40:46,721 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-01 00:40:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-01 00:40:46,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:46,722 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-01 00:40:46,722 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:46,723 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:46,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-10-01 00:40:46,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:46,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:46,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:46,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:46,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:47,235 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:47,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:47,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:47,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:47,591 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:47,591 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 00:40:47,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:40:47,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:40:47,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:47,592 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-10-01 00:40:48,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:48,114 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-01 00:40:48,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 00:40:48,115 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-01 00:40:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:48,116 INFO L225 Difference]: With dead ends: 155 [2018-10-01 00:40:48,116 INFO L226 Difference]: Without dead ends: 153 [2018-10-01 00:40:48,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-01 00:40:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-01 00:40:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-01 00:40:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-01 00:40:48,119 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-10-01 00:40:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:48,119 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-01 00:40:48,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:40:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-01 00:40:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 00:40:48,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:48,120 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-10-01 00:40:48,121 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:48,121 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:48,121 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-10-01 00:40:48,121 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:48,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:48,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:48,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:48,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:48,538 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:48,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:48,545 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:48,603 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:48,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:48,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:48,895 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:48,895 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 00:40:48,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 00:40:48,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 00:40:48,896 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:48,896 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-10-01 00:40:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:49,296 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 00:40:49,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 00:40:49,297 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-10-01 00:40:49,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:49,298 INFO L225 Difference]: With dead ends: 157 [2018-10-01 00:40:49,298 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 00:40:49,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 00:40:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-01 00:40:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 00:40:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-01 00:40:49,302 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-10-01 00:40:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:49,303 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-01 00:40:49,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 00:40:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-01 00:40:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-01 00:40:49,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:49,304 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-01 00:40:49,304 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:49,304 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:49,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-10-01 00:40:49,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:49,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:49,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:49,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:49,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:49,733 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:49,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:49,740 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:51,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-01 00:40:51,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:51,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:51,447 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:51,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 00:40:51,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 00:40:51,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 00:40:51,448 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:51,448 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-10-01 00:40:51,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:51,787 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-01 00:40:51,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 00:40:51,787 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-01 00:40:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:51,788 INFO L225 Difference]: With dead ends: 159 [2018-10-01 00:40:51,788 INFO L226 Difference]: Without dead ends: 157 [2018-10-01 00:40:51,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-01 00:40:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-01 00:40:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-01 00:40:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-01 00:40:51,791 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-10-01 00:40:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:51,791 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-01 00:40:51,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 00:40:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-01 00:40:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-01 00:40:51,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:51,792 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-10-01 00:40:51,792 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:51,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:51,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-10-01 00:40:51,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:51,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:51,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:51,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:51,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:52,214 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:52,214 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 [2018-10-01 00:40:52,222 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:52,277 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:52,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:52,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:52,551 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:52,552 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-01 00:40:52,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-01 00:40:52,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-01 00:40:52,553 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:52,553 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-10-01 00:40:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:53,206 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 00:40:53,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 00:40:53,207 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-10-01 00:40:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:53,207 INFO L225 Difference]: With dead ends: 161 [2018-10-01 00:40:53,207 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 00:40:53,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 00:40:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-01 00:40:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 00:40:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-01 00:40:53,213 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-10-01 00:40:53,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:53,214 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-01 00:40:53,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-01 00:40:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-01 00:40:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 00:40:53,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:53,216 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-10-01 00:40:53,216 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:53,216 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:53,216 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-10-01 00:40:53,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:53,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:53,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:53,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:53,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:53,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:53,780 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:53,786 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:59,265 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-01 00:40:59,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:59,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:59,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:59,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 00:40:59,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 00:40:59,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 00:40:59,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:59,551 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-10-01 00:41:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:00,181 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-01 00:41:00,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 00:41:00,182 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-01 00:41:00,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:00,182 INFO L225 Difference]: With dead ends: 163 [2018-10-01 00:41:00,182 INFO L226 Difference]: Without dead ends: 161 [2018-10-01 00:41:00,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-01 00:41:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-01 00:41:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-01 00:41:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-01 00:41:00,187 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-10-01 00:41:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:00,187 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-01 00:41:00,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 00:41:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-01 00:41:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-01 00:41:00,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:00,188 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-10-01 00:41:00,188 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:00,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:00,189 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-10-01 00:41:00,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:00,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:00,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:00,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:00,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:00,882 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:00,882 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 [2018-10-01 00:41:00,889 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:02,191 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 00:41:02,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:02,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:02,497 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:02,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-01 00:41:02,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-01 00:41:02,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-01 00:41:02,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:02,498 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-10-01 00:41:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:02,870 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 00:41:02,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 00:41:02,870 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-10-01 00:41:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:02,871 INFO L225 Difference]: With dead ends: 165 [2018-10-01 00:41:02,871 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 00:41:02,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 00:41:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-01 00:41:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 00:41:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-01 00:41:02,875 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-10-01 00:41:02,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:02,875 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-01 00:41:02,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-01 00:41:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-01 00:41:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 00:41:02,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:02,877 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-10-01 00:41:02,877 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:02,877 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:02,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-10-01 00:41:02,877 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:02,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:02,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:02,878 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:02,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:03,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:03,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:03,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:41:03,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:03,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:03,954 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:03,954 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 00:41:03,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 00:41:03,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 00:41:03,955 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:03,955 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-10-01 00:41:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:04,432 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-01 00:41:04,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 00:41:04,432 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-01 00:41:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:04,433 INFO L225 Difference]: With dead ends: 167 [2018-10-01 00:41:04,433 INFO L226 Difference]: Without dead ends: 165 [2018-10-01 00:41:04,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:04,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-01 00:41:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-01 00:41:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-01 00:41:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-01 00:41:04,437 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-10-01 00:41:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:04,437 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-01 00:41:04,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 00:41:04,437 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-01 00:41:04,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 00:41:04,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:04,438 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-10-01 00:41:04,438 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:04,438 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:04,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-10-01 00:41:04,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:04,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:04,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:04,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:04,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:04,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:04,928 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:41:04,934 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:04,992 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:04,993 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:04,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:05,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:05,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-01 00:41:05,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 00:41:05,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 00:41:05,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:05,315 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-10-01 00:41:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:06,067 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 00:41:06,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 00:41:06,067 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-10-01 00:41:06,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:06,068 INFO L225 Difference]: With dead ends: 169 [2018-10-01 00:41:06,068 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 00:41:06,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 00:41:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-01 00:41:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 00:41:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-01 00:41:06,071 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-10-01 00:41:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:06,071 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-01 00:41:06,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 00:41:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-01 00:41:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-01 00:41:06,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:06,072 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-10-01 00:41:06,072 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:06,072 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:06,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-10-01 00:41:06,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:06,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:06,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:06,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:06,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:06,739 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:06,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:41:06,746 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:08,635 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-01 00:41:08,635 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:08,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:08,934 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:08,934 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-01 00:41:08,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 00:41:08,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 00:41:08,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:08,935 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-10-01 00:41:09,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:09,489 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-01 00:41:09,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 00:41:09,489 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-01 00:41:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:09,490 INFO L225 Difference]: With dead ends: 171 [2018-10-01 00:41:09,490 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 00:41:09,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:09,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 00:41:09,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-01 00:41:09,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 00:41:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-01 00:41:09,493 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-10-01 00:41:09,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:09,493 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-01 00:41:09,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 00:41:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-01 00:41:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 00:41:09,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:09,494 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-10-01 00:41:09,494 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:09,494 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:09,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-10-01 00:41:09,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:09,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:09,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:09,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:10,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:10,115 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:41:10,123 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:10,180 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:10,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:10,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:10,553 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:10,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-01 00:41:10,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-01 00:41:10,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-01 00:41:10,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:10,554 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-10-01 00:41:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:11,177 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 00:41:11,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 00:41:11,177 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-10-01 00:41:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:11,178 INFO L225 Difference]: With dead ends: 173 [2018-10-01 00:41:11,178 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 00:41:11,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 00:41:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-01 00:41:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 00:41:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-01 00:41:11,181 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-10-01 00:41:11,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:11,181 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-01 00:41:11,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-01 00:41:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-01 00:41:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 00:41:11,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:11,182 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-10-01 00:41:11,182 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:11,182 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:11,182 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-10-01 00:41:11,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:11,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:11,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,183 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:11,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:11,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:11,860 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 [2018-10-01 00:41:11,869 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:19,094 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-01 00:41:19,094 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:19,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:19,401 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:19,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 00:41:19,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 00:41:19,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 00:41:19,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:19,402 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-10-01 00:41:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:19,825 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-01 00:41:19,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 00:41:19,826 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-01 00:41:19,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:19,826 INFO L225 Difference]: With dead ends: 175 [2018-10-01 00:41:19,826 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 00:41:19,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 00:41:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-01 00:41:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-01 00:41:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-01 00:41:19,829 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-10-01 00:41:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:19,830 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-01 00:41:19,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 00:41:19,830 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-01 00:41:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-01 00:41:19,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:19,831 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-10-01 00:41:19,831 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:19,831 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:19,831 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-10-01 00:41:19,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:19,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:19,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:19,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:19,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:20,317 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:20,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:20,328 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:21,967 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 00:41:21,967 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:21,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:22,271 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:22,272 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-01 00:41:22,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-01 00:41:22,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-01 00:41:22,273 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:22,273 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-10-01 00:41:22,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:22,892 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 00:41:22,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 00:41:22,892 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-10-01 00:41:22,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:22,893 INFO L225 Difference]: With dead ends: 177 [2018-10-01 00:41:22,893 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 00:41:22,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:22,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 00:41:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-01 00:41:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 00:41:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-01 00:41:22,897 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-10-01 00:41:22,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:22,897 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-01 00:41:22,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-01 00:41:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-01 00:41:22,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-01 00:41:22,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:22,899 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-10-01 00:41:22,899 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:22,899 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:22,899 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-10-01 00:41:22,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:22,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:22,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:22,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:22,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:23,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:23,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:23,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:23,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:23,794 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:23,795 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 00:41:23,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 00:41:23,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 00:41:23,796 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:23,796 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-10-01 00:41:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:24,197 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-01 00:41:24,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 00:41:24,197 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-01 00:41:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:24,198 INFO L225 Difference]: With dead ends: 179 [2018-10-01 00:41:24,198 INFO L226 Difference]: Without dead ends: 177 [2018-10-01 00:41:24,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:24,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-01 00:41:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-01 00:41:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-01 00:41:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-01 00:41:24,202 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-10-01 00:41:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:24,203 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-01 00:41:24,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 00:41:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-01 00:41:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-01 00:41:24,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:24,204 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-10-01 00:41:24,204 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:24,204 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:24,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-10-01 00:41:24,204 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:24,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:24,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:24,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:24,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:24,718 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:24,718 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:24,724 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:24,786 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:24,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:24,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:25,099 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:25,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-01 00:41:25,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 00:41:25,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 00:41:25,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:25,101 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-10-01 00:41:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:25,632 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 00:41:25,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 00:41:25,633 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-10-01 00:41:25,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:25,634 INFO L225 Difference]: With dead ends: 181 [2018-10-01 00:41:25,634 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 00:41:25,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 00:41:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-01 00:41:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 00:41:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-01 00:41:25,637 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-10-01 00:41:25,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:25,637 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-01 00:41:25,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 00:41:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-01 00:41:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 00:41:25,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:25,638 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-10-01 00:41:25,638 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:25,638 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:25,638 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-10-01 00:41:25,638 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:25,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:25,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:25,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:25,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:26,425 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:26,426 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:26,436 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:28,875 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-01 00:41:28,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:28,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:29,192 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:29,192 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-01 00:41:29,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 00:41:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 00:41:29,193 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:29,193 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-10-01 00:41:29,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:29,637 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-01 00:41:29,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 00:41:29,637 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-01 00:41:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:29,638 INFO L225 Difference]: With dead ends: 183 [2018-10-01 00:41:29,638 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 00:41:29,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 00:41:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 00:41:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 00:41:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-01 00:41:29,641 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-10-01 00:41:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:29,641 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-01 00:41:29,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 00:41:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-01 00:41:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-01 00:41:29,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:29,642 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-10-01 00:41:29,642 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:29,642 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:29,643 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-10-01 00:41:29,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:29,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:29,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:29,643 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:29,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:30,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:30,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:30,160 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:30,223 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:30,223 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:30,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:30,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:30,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-01 00:41:30,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-01 00:41:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-01 00:41:30,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:30,546 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-10-01 00:41:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:31,117 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 00:41:31,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 00:41:31,117 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-10-01 00:41:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:31,118 INFO L225 Difference]: With dead ends: 185 [2018-10-01 00:41:31,118 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 00:41:31,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 00:41:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-01 00:41:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-01 00:41:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-01 00:41:31,121 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-10-01 00:41:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:31,121 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-01 00:41:31,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-01 00:41:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-01 00:41:31,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 00:41:31,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:31,122 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-10-01 00:41:31,122 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:31,123 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:31,123 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-10-01 00:41:31,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:31,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:31,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:31,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:31,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:31,876 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:31,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:31,900 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:41,631 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-01 00:41:41,632 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:41,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:42,038 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:42,038 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 00:41:42,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 00:41:42,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 00:41:42,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:42,039 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-10-01 00:41:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:42,455 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-01 00:41:42,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 00:41:42,456 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-01 00:41:42,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:42,456 INFO L225 Difference]: With dead ends: 187 [2018-10-01 00:41:42,456 INFO L226 Difference]: Without dead ends: 185 [2018-10-01 00:41:42,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-01 00:41:42,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-01 00:41:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 00:41:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-01 00:41:42,460 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-10-01 00:41:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:42,461 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-01 00:41:42,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 00:41:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-01 00:41:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-01 00:41:42,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:42,462 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-10-01 00:41:42,462 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:42,462 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:42,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-10-01 00:41:42,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:42,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:42,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:42,463 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:42,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:42,977 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:42,977 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:42,985 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:45,127 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 00:41:45,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:45,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:45,456 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:45,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-01 00:41:45,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-01 00:41:45,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-01 00:41:45,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:45,457 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-10-01 00:41:45,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:45,894 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 00:41:45,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 00:41:45,894 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-10-01 00:41:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:45,895 INFO L225 Difference]: With dead ends: 189 [2018-10-01 00:41:45,895 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 00:41:45,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 00:41:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-01 00:41:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 00:41:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-01 00:41:45,899 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-10-01 00:41:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:45,900 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-01 00:41:45,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-01 00:41:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-01 00:41:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-01 00:41:45,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:45,901 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-10-01 00:41:45,901 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:45,901 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:45,901 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-10-01 00:41:45,902 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:45,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:45,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:45,902 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:45,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:46,518 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:46,518 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:46,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:46,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:47,071 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:47,071 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 00:41:47,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 00:41:47,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 00:41:47,072 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:47,072 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-10-01 00:41:47,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:47,511 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-01 00:41:47,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 00:41:47,511 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-01 00:41:47,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:47,512 INFO L225 Difference]: With dead ends: 191 [2018-10-01 00:41:47,512 INFO L226 Difference]: Without dead ends: 189 [2018-10-01 00:41:47,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-01 00:41:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-01 00:41:47,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-01 00:41:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-01 00:41:47,516 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-10-01 00:41:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:47,517 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-01 00:41:47,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 00:41:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-01 00:41:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 00:41:47,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:47,518 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-10-01 00:41:47,518 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:47,518 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:47,518 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-10-01 00:41:47,518 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:47,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:47,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:47,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:47,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:48,084 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:48,084 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:48,091 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:48,158 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:48,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:48,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:48,539 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:48,539 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-01 00:41:48,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 00:41:48,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 00:41:48,540 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:48,540 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-10-01 00:41:48,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:48,978 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 00:41:48,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 00:41:48,978 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-10-01 00:41:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:48,979 INFO L225 Difference]: With dead ends: 193 [2018-10-01 00:41:48,979 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 00:41:48,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 00:41:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 00:41:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 00:41:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-01 00:41:48,983 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-10-01 00:41:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:48,983 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-01 00:41:48,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 00:41:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-01 00:41:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-01 00:41:48,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:48,985 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-10-01 00:41:48,985 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:48,985 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:48,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-10-01 00:41:48,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:48,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:48,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:48,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:48,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:49,562 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:49,562 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:49,569 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:52,765 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-01 00:41:52,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:52,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:53,126 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:53,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 00:41:53,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 00:41:53,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 00:41:53,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:53,128 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-10-01 00:41:53,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:53,739 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-01 00:41:53,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 00:41:53,739 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-01 00:41:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:53,740 INFO L225 Difference]: With dead ends: 195 [2018-10-01 00:41:53,740 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 00:41:53,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 00:41:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-01 00:41:53,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-01 00:41:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-01 00:41:53,743 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-10-01 00:41:53,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:53,743 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-01 00:41:53,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 00:41:53,744 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-01 00:41:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-01 00:41:53,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:53,744 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-10-01 00:41:53,745 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:53,745 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:53,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-10-01 00:41:53,745 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:53,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:53,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:53,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:53,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:54,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:54,291 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:54,298 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:54,366 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:54,366 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:54,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:54,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:54,707 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-01 00:41:54,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 00:41:54,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 00:41:54,708 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:54,708 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-10-01 00:41:55,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:55,221 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 00:41:55,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 00:41:55,221 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-10-01 00:41:55,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:55,222 INFO L225 Difference]: With dead ends: 197 [2018-10-01 00:41:55,222 INFO L226 Difference]: Without dead ends: 195 [2018-10-01 00:41:55,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-01 00:41:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-01 00:41:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 00:41:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-01 00:41:55,226 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-10-01 00:41:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:55,226 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-01 00:41:55,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 00:41:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-01 00:41:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 00:41:55,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:55,227 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-10-01 00:41:55,227 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:55,227 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:55,227 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-10-01 00:41:55,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:55,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:55,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:55,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:55,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:55,798 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:55,798 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:41:55,805 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:08,059 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-01 00:42:08,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:08,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:08,408 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:08,408 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 00:42:08,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 00:42:08,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 00:42:08,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:08,410 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-10-01 00:42:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:09,024 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-01 00:42:09,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 00:42:09,024 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-01 00:42:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:09,025 INFO L225 Difference]: With dead ends: 199 [2018-10-01 00:42:09,025 INFO L226 Difference]: Without dead ends: 197 [2018-10-01 00:42:09,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:42:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-01 00:42:09,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-01 00:42:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-01 00:42:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-01 00:42:09,029 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-10-01 00:42:09,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:09,029 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-01 00:42:09,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 00:42:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-01 00:42:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-01 00:42:09,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:09,031 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-10-01 00:42:09,031 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:09,031 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:09,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-10-01 00:42:09,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:09,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:09,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:09,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:09,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:09,647 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:09,647 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:09,667 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:12,371 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 00:42:12,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:12,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:12,786 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:12,787 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-01 00:42:12,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-01 00:42:12,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-01 00:42:12,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:12,788 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-10-01 00:42:13,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:13,258 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 00:42:13,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 00:42:13,259 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-10-01 00:42:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:13,260 INFO L225 Difference]: With dead ends: 201 [2018-10-01 00:42:13,260 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 00:42:13,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:42:13,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 00:42:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-01 00:42:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 00:42:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-01 00:42:13,264 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-10-01 00:42:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:13,264 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-01 00:42:13,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-01 00:42:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-01 00:42:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 00:42:13,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:13,265 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-10-01 00:42:13,265 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:13,265 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:13,266 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-10-01 00:42:13,266 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:13,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:13,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:13,266 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:13,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:13,877 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:13,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:13,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:13,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:14,312 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:14,312 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 00:42:14,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 00:42:14,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 00:42:14,313 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:14,313 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-10-01 00:42:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:14,914 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-01 00:42:14,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 00:42:14,915 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-10-01 00:42:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:14,916 INFO L225 Difference]: With dead ends: 203 [2018-10-01 00:42:14,916 INFO L226 Difference]: Without dead ends: 201 [2018-10-01 00:42:14,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:42:14,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-01 00:42:14,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-01 00:42:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-01 00:42:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-01 00:42:14,919 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-10-01 00:42:14,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:14,919 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-01 00:42:14,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 00:42:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-01 00:42:14,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 00:42:14,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:14,920 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-10-01 00:42:14,920 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:14,920 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:14,920 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-10-01 00:42:14,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:14,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:14,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:14,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:14,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:15,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:15,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:15,515 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:15,585 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:15,585 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:15,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:15,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:15,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-01 00:42:15,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 00:42:15,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 00:42:15,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:15,948 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-10-01 00:42:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:16,497 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 00:42:16,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 00:42:16,497 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-10-01 00:42:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:16,498 INFO L225 Difference]: With dead ends: 205 [2018-10-01 00:42:16,498 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 00:42:16,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:42:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 00:42:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-01 00:42:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 00:42:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-01 00:42:16,501 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-10-01 00:42:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:16,501 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-01 00:42:16,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 00:42:16,501 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-01 00:42:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 00:42:16,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:16,502 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-10-01 00:42:16,502 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:16,503 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:16,503 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-10-01 00:42:16,503 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:16,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:16,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:16,504 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:16,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:17,144 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:17,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:17,165 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:21,326 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-01 00:42:21,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:21,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:21,687 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:21,687 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 00:42:21,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 00:42:21,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 00:42:21,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:21,689 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-10-01 00:42:22,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:22,206 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-01 00:42:22,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 00:42:22,207 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-10-01 00:42:22,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:22,208 INFO L225 Difference]: With dead ends: 207 [2018-10-01 00:42:22,208 INFO L226 Difference]: Without dead ends: 205 [2018-10-01 00:42:22,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:42:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-01 00:42:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-01 00:42:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 00:42:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-01 00:42:22,211 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-10-01 00:42:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:22,212 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-01 00:42:22,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 00:42:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-01 00:42:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-01 00:42:22,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:22,213 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-10-01 00:42:22,213 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:22,213 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:22,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-10-01 00:42:22,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:22,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:22,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:22,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:22,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:23,167 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:23,167 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:23,175 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:23,245 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:23,245 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:23,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:23,605 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:23,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-01 00:42:23,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 00:42:23,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 00:42:23,607 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:23,607 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-10-01 00:42:24,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:24,177 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 00:42:24,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 00:42:24,178 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-10-01 00:42:24,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:24,179 INFO L225 Difference]: With dead ends: 209 [2018-10-01 00:42:24,179 INFO L226 Difference]: Without dead ends: 207 [2018-10-01 00:42:24,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-01 00:42:24,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-01 00:42:24,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-01 00:42:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-01 00:42:24,183 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-10-01 00:42:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:24,183 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-01 00:42:24,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 00:42:24,183 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-01 00:42:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 00:42:24,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:24,184 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-10-01 00:42:24,185 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:24,185 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:24,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-10-01 00:42:24,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:24,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:24,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:24,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:24,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:24,830 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:24,830 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:24,840 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:40,924 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-01 00:42:40,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:40,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:41,418 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:41,418 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 00:42:41,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 00:42:41,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 00:42:41,421 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:41,421 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-10-01 00:42:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:42,269 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-01 00:42:42,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 00:42:42,269 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-10-01 00:42:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:42,270 INFO L225 Difference]: With dead ends: 211 [2018-10-01 00:42:42,270 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 00:42:42,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 00:42:42,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-01 00:42:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 00:42:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-01 00:42:42,274 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-10-01 00:42:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:42,274 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-01 00:42:42,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 00:42:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-01 00:42:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 00:42:42,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:42,275 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-10-01 00:42:42,275 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:42,275 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:42,275 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-10-01 00:42:42,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:42,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:42,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:42,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:42,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:43,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:43,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:43,016 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:46,407 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 00:42:46,408 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:46,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:46,784 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:46,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-01 00:42:46,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-01 00:42:46,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-01 00:42:46,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:46,786 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-10-01 00:42:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:47,451 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 00:42:47,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 00:42:47,451 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-10-01 00:42:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:47,451 INFO L225 Difference]: With dead ends: 213 [2018-10-01 00:42:47,451 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 00:42:47,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 00:42:47,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 00:42:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 00:42:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-01 00:42:47,456 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-10-01 00:42:47,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:47,456 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-01 00:42:47,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-01 00:42:47,456 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-01 00:42:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-01 00:42:47,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:47,458 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-10-01 00:42:47,458 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:47,458 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:47,458 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-10-01 00:42:47,458 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:47,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:47,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:47,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:47,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:48,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:48,226 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:48,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:48,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:48,688 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:48,689 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-01 00:42:48,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 00:42:48,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 00:42:48,690 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:48,690 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-10-01 00:42:49,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:49,262 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-01 00:42:49,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 00:42:49,262 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-10-01 00:42:49,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:49,263 INFO L225 Difference]: With dead ends: 215 [2018-10-01 00:42:49,263 INFO L226 Difference]: Without dead ends: 213 [2018-10-01 00:42:49,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-01 00:42:49,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-01 00:42:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-01 00:42:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-01 00:42:49,266 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-10-01 00:42:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:49,266 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-01 00:42:49,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 00:42:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-01 00:42:49,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 00:42:49,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:49,268 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-10-01 00:42:49,268 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:49,268 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:49,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-10-01 00:42:49,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:49,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:49,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:49,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:49,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:49,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:49,904 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:49,912 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:49,986 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:49,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:49,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:50,445 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:50,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-01 00:42:50,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 00:42:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 00:42:50,446 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:50,446 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-10-01 00:42:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:51,287 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 00:42:51,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 00:42:51,287 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-10-01 00:42:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:51,288 INFO L225 Difference]: With dead ends: 217 [2018-10-01 00:42:51,288 INFO L226 Difference]: Without dead ends: 215 [2018-10-01 00:42:51,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:51,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-01 00:42:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-01 00:42:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 00:42:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-01 00:42:51,294 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-10-01 00:42:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:51,294 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-01 00:42:51,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 00:42:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-01 00:42:51,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-01 00:42:51,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:51,296 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-10-01 00:42:51,296 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:51,296 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:51,296 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-10-01 00:42:51,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:51,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:51,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:51,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:51,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:51,955 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:51,955 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:51,962 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:57,002 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-01 00:42:57,003 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:57,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:57,404 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:57,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 00:42:57,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 00:42:57,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 00:42:57,405 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:57,405 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-10-01 00:42:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:58,369 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-01 00:42:58,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 00:42:58,369 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-10-01 00:42:58,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:58,369 INFO L225 Difference]: With dead ends: 219 [2018-10-01 00:42:58,370 INFO L226 Difference]: Without dead ends: 217 [2018-10-01 00:42:58,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:42:58,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-01 00:42:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-01 00:42:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-01 00:42:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-01 00:42:58,374 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-10-01 00:42:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:58,374 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-01 00:42:58,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 00:42:58,375 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-01 00:42:58,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-01 00:42:58,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:58,376 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-10-01 00:42:58,376 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:58,376 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:58,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-10-01 00:42:58,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:58,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:58,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:58,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:58,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:59,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:59,106 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:59,113 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:59,189 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:59,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:59,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:59,571 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:59,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-01 00:42:59,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-01 00:42:59,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-01 00:42:59,573 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:59,573 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-10-01 00:43:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:00,471 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 00:43:00,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 00:43:00,471 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-10-01 00:43:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:00,471 INFO L225 Difference]: With dead ends: 221 [2018-10-01 00:43:00,472 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 00:43:00,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:43:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 00:43:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-01 00:43:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 00:43:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-01 00:43:00,475 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-10-01 00:43:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:00,476 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-01 00:43:00,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-01 00:43:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-01 00:43:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 00:43:00,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:00,477 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-10-01 00:43:00,477 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:00,477 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:00,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-10-01 00:43:00,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:00,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:00,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:00,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:00,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:01,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:01,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:01,151 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:43:22,029 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-01 00:43:22,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:22,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:22,426 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:22,427 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-01 00:43:22,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 00:43:22,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 00:43:22,428 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:22,428 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-10-01 00:43:23,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:23,013 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-01 00:43:23,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 00:43:23,013 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-10-01 00:43:23,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:23,014 INFO L225 Difference]: With dead ends: 223 [2018-10-01 00:43:23,014 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 00:43:23,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:43:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 00:43:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 00:43:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 00:43:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-01 00:43:23,017 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-10-01 00:43:23,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:23,018 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-01 00:43:23,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 00:43:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-01 00:43:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-01 00:43:23,019 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:23,019 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-10-01 00:43:23,019 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:23,019 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:23,019 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-10-01 00:43:23,019 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:23,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:23,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:23,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:23,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:23,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:23,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:23,676 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:43:27,960 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 00:43:27,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:27,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:28,357 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:28,357 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-01 00:43:28,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-01 00:43:28,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-01 00:43:28,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:28,359 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-10-01 00:43:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:29,323 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 00:43:29,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 00:43:29,324 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-10-01 00:43:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:29,324 INFO L225 Difference]: With dead ends: 225 [2018-10-01 00:43:29,324 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 00:43:29,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:43:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 00:43:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-01 00:43:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 00:43:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-01 00:43:29,327 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-10-01 00:43:29,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:29,327 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-01 00:43:29,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-01 00:43:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-01 00:43:29,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 00:43:29,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:29,328 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-10-01 00:43:29,328 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:29,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:29,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-10-01 00:43:29,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:29,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:29,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:29,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:29,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:30,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:30,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:30,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:30,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:30,500 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:30,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 00:43:30,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 00:43:30,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 00:43:30,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:30,502 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-10-01 00:43:31,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:31,312 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-01 00:43:31,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 00:43:31,312 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-10-01 00:43:31,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:31,313 INFO L225 Difference]: With dead ends: 227 [2018-10-01 00:43:31,313 INFO L226 Difference]: Without dead ends: 225 [2018-10-01 00:43:31,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:43:31,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-01 00:43:31,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-01 00:43:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-01 00:43:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-01 00:43:31,316 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-10-01 00:43:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:31,316 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-01 00:43:31,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 00:43:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-01 00:43:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 00:43:31,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:31,317 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-10-01 00:43:31,317 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:31,317 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:31,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-10-01 00:43:31,317 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:31,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:31,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:31,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:31,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:32,006 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:32,007 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:32,015 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:43:32,093 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:43:32,093 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:32,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:32,511 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:32,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-01 00:43:32,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 00:43:32,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 00:43:32,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:32,513 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-10-01 00:43:33,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:33,511 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 00:43:33,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 00:43:33,512 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-10-01 00:43:33,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:33,512 INFO L225 Difference]: With dead ends: 229 [2018-10-01 00:43:33,512 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 00:43:33,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:43:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 00:43:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-01 00:43:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 00:43:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-01 00:43:33,516 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-10-01 00:43:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:33,516 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-01 00:43:33,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 00:43:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-01 00:43:33,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-01 00:43:33,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:33,517 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-10-01 00:43:33,517 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:33,517 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:33,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-10-01 00:43:33,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:33,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:33,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:33,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:33,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:34,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:34,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:34,445 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:43:40,778 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-10-01 00:43:40,778 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:40,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:41,198 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:41,198 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 00:43:41,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 00:43:41,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 00:43:41,199 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:41,199 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-10-01 00:43:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:42,039 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-01 00:43:42,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 00:43:42,039 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-10-01 00:43:42,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:42,040 INFO L225 Difference]: With dead ends: 231 [2018-10-01 00:43:42,040 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 00:43:42,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:43:42,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 00:43:42,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-01 00:43:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 00:43:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-01 00:43:42,043 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-10-01 00:43:42,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:42,043 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-01 00:43:42,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 00:43:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-01 00:43:42,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 00:43:42,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:42,044 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-10-01 00:43:42,044 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:42,044 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:42,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-10-01 00:43:42,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:42,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:42,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:42,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:42,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:42,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:42,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:42,756 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:43:42,834 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:43:42,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:42,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:43,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:43,255 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-01 00:43:43,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 00:43:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 00:43:43,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:43,257 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-10-01 00:43:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:44,045 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 00:43:44,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 00:43:44,045 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-10-01 00:43:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:44,046 INFO L225 Difference]: With dead ends: 233 [2018-10-01 00:43:44,046 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 00:43:44,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:43:44,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 00:43:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-01 00:43:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 00:43:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-01 00:43:44,049 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-10-01 00:43:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:44,049 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-01 00:43:44,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 00:43:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-01 00:43:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 00:43:44,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:44,050 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-10-01 00:43:44,050 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:44,050 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:44,050 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-10-01 00:43:44,050 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:44,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:44,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:44,051 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:44,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:45,098 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:45,098 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:45,105 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:44:10,978 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-10-01 00:44:10,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:10,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:11,537 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:11,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 00:44:11,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 00:44:11,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 00:44:11,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:11,539 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-10-01 00:44:12,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:12,455 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-01 00:44:12,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 00:44:12,455 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-10-01 00:44:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:12,456 INFO L225 Difference]: With dead ends: 235 [2018-10-01 00:44:12,456 INFO L226 Difference]: Without dead ends: 233 [2018-10-01 00:44:12,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:44:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-01 00:44:12,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-01 00:44:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-01 00:44:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-10-01 00:44:12,459 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-10-01 00:44:12,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:12,459 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-10-01 00:44:12,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 00:44:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-10-01 00:44:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-01 00:44:12,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:12,460 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-10-01 00:44:12,460 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:12,460 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:12,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-10-01 00:44:12,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:12,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:12,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:12,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:12,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:13,177 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:13,177 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:13,184 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:44:18,430 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 00:44:18,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:18,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:18,843 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:18,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-01 00:44:18,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-01 00:44:18,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-01 00:44:18,845 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:18,845 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-10-01 00:44:19,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:19,925 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 00:44:19,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 00:44:19,925 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-10-01 00:44:19,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:19,926 INFO L225 Difference]: With dead ends: 237 [2018-10-01 00:44:19,926 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 00:44:19,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:44:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 00:44:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-01 00:44:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 00:44:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-01 00:44:19,929 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-10-01 00:44:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:19,929 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-01 00:44:19,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-01 00:44:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-01 00:44:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-01 00:44:19,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:19,930 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-10-01 00:44:19,930 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:19,930 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:19,930 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-10-01 00:44:19,930 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:19,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:19,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:19,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:19,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:20,832 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:20,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:20,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:20,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:21,350 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:21,350 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 00:44:21,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 00:44:21,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 00:44:21,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:21,352 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-10-01 00:44:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:22,326 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-01 00:44:22,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 00:44:22,326 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-10-01 00:44:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:22,327 INFO L225 Difference]: With dead ends: 239 [2018-10-01 00:44:22,327 INFO L226 Difference]: Without dead ends: 237 [2018-10-01 00:44:22,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:44:22,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-01 00:44:22,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-01 00:44:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-01 00:44:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-10-01 00:44:22,330 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-10-01 00:44:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:22,330 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-10-01 00:44:22,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 00:44:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-10-01 00:44:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 00:44:22,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:22,331 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-10-01 00:44:22,331 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:22,332 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:22,332 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-10-01 00:44:22,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:22,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:22,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:22,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:22,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:23,066 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:23,066 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:23,073 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:44:23,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:44:23,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:23,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:23,627 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:23,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-01 00:44:23,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 00:44:23,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 00:44:23,629 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:23,629 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-10-01 00:44:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:24,704 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 00:44:24,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 00:44:24,704 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-10-01 00:44:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:24,705 INFO L225 Difference]: With dead ends: 241 [2018-10-01 00:44:24,705 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 00:44:24,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:44:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 00:44:24,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-01 00:44:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 00:44:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-01 00:44:24,708 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-10-01 00:44:24,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:24,708 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-01 00:44:24,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 00:44:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-01 00:44:24,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 00:44:24,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:24,709 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-10-01 00:44:24,709 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:24,709 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-10-01 00:44:24,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:24,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:24,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:24,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:24,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:25,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:25,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:25,634 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:44:33,658 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-10-01 00:44:33,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:33,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:34,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:34,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 00:44:34,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 00:44:34,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 00:44:34,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:34,089 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-10-01 00:44:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:34,820 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-01 00:44:34,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 00:44:34,821 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-10-01 00:44:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:34,821 INFO L225 Difference]: With dead ends: 243 [2018-10-01 00:44:34,822 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 00:44:34,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:44:34,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 00:44:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 00:44:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 00:44:34,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-01 00:44:34,825 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-10-01 00:44:34,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:34,826 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-01 00:44:34,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 00:44:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-01 00:44:34,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-01 00:44:34,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:34,826 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-10-01 00:44:34,827 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:34,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:34,827 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-10-01 00:44:34,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:34,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:34,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:34,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:34,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:35,653 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:35,653 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:35,660 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:44:35,746 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:44:35,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:35,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:36,234 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:36,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-10-01 00:44:36,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-10-01 00:44:36,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-10-01 00:44:36,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:36,236 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-10-01 00:44:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:37,240 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 00:44:37,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 00:44:37,240 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-10-01 00:44:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:37,241 INFO L225 Difference]: With dead ends: 245 [2018-10-01 00:44:37,241 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 00:44:37,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:44:37,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 00:44:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-01 00:44:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-01 00:44:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-01 00:44:37,244 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-10-01 00:44:37,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:37,244 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-01 00:44:37,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-10-01 00:44:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-01 00:44:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 00:44:37,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:37,245 INFO L375 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-10-01 00:44:37,245 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:37,245 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:37,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-10-01 00:44:37,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:37,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:37,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:37,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:37,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:38,016 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:38,016 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:38,024 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:45:09,989 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2018-10-01 00:45:09,989 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:09,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:10,428 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:10,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-10-01 00:45:10,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 00:45:10,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 00:45:10,430 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:10,430 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-10-01 00:45:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:11,181 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-01 00:45:11,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 00:45:11,181 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-10-01 00:45:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:11,182 INFO L225 Difference]: With dead ends: 247 [2018-10-01 00:45:11,182 INFO L226 Difference]: Without dead ends: 245 [2018-10-01 00:45:11,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:45:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-01 00:45:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-01 00:45:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 00:45:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-10-01 00:45:11,185 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-10-01 00:45:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:11,185 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-10-01 00:45:11,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 00:45:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-10-01 00:45:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-01 00:45:11,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:11,186 INFO L375 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-10-01 00:45:11,186 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:11,186 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-10-01 00:45:11,187 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:11,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:11,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:11,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:11,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:12,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:12,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:12,181 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:45:18,717 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 00:45:18,718 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:18,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:19,182 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:19,183 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-10-01 00:45:19,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-10-01 00:45:19,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-10-01 00:45:19,184 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:19,184 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-10-01 00:45:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:20,212 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 00:45:20,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 00:45:20,213 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-10-01 00:45:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:20,213 INFO L225 Difference]: With dead ends: 249 [2018-10-01 00:45:20,214 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 00:45:20,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:45:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 00:45:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-01 00:45:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 00:45:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-01 00:45:20,217 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-10-01 00:45:20,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:20,217 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-01 00:45:20,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-10-01 00:45:20,217 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-01 00:45:20,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-01 00:45:20,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:20,218 INFO L375 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-10-01 00:45:20,218 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:20,218 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:20,218 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-10-01 00:45:20,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:20,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:20,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:20,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:20,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:21,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:21,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:21,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:21,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:21,555 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:21,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 00:45:21,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 00:45:21,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 00:45:21,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:21,558 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-10-01 00:45:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:22,458 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-01 00:45:22,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 00:45:22,458 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-10-01 00:45:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:22,459 INFO L225 Difference]: With dead ends: 251 [2018-10-01 00:45:22,459 INFO L226 Difference]: Without dead ends: 249 [2018-10-01 00:45:22,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:45:22,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-01 00:45:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-10-01 00:45:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-01 00:45:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-01 00:45:22,463 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-10-01 00:45:22,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:22,463 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-01 00:45:22,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 00:45:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-01 00:45:22,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 00:45:22,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:22,465 INFO L375 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-10-01 00:45:22,465 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:22,465 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:22,465 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-10-01 00:45:22,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:22,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:22,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:22,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:22,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:23,292 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:23,292 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:23,299 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:45:23,387 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:45:23,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:23,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:23,829 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:23,829 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-10-01 00:45:23,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 00:45:23,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 00:45:23,830 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:23,830 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-10-01 00:45:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:25,052 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 00:45:25,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 00:45:25,052 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-10-01 00:45:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:25,053 INFO L225 Difference]: With dead ends: 253 [2018-10-01 00:45:25,053 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 00:45:25,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:45:25,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 00:45:25,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-01 00:45:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 00:45:25,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-01 00:45:25,057 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-10-01 00:45:25,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:25,057 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-01 00:45:25,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 00:45:25,057 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-01 00:45:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-01 00:45:25,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:25,058 INFO L375 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-10-01 00:45:25,058 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:25,058 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:25,059 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-10-01 00:45:25,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:25,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:25,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:25,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:25,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:25,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:25,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:25,854 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:45:35,408 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 124 check-sat command(s) [2018-10-01 00:45:35,409 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:35,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:35,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:35,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-10-01 00:45:35,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 00:45:35,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 00:45:35,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:35,881 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-10-01 00:45:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:36,988 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-01 00:45:36,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 00:45:36,988 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-10-01 00:45:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:36,989 INFO L225 Difference]: With dead ends: 255 [2018-10-01 00:45:36,989 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 00:45:36,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:45:36,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 00:45:36,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-01 00:45:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-01 00:45:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-01 00:45:36,992 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-10-01 00:45:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:36,992 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-01 00:45:36,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 00:45:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-01 00:45:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-01 00:45:36,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:36,993 INFO L375 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-10-01 00:45:36,993 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:36,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:36,993 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-10-01 00:45:36,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:36,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:36,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:36,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:36,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:37,927 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:37,927 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:37,934 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:45:38,018 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:45:38,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:38,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:38,467 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:38,468 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-10-01 00:45:38,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-10-01 00:45:38,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-10-01 00:45:38,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:38,469 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-10-01 00:45:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:39,697 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 00:45:39,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 00:45:39,697 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-10-01 00:45:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:39,698 INFO L225 Difference]: With dead ends: 257 [2018-10-01 00:45:39,698 INFO L226 Difference]: Without dead ends: 255 [2018-10-01 00:45:39,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:45:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-01 00:45:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-01 00:45:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 00:45:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-01 00:45:39,701 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-10-01 00:45:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:39,701 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-01 00:45:39,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-10-01 00:45:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-01 00:45:39,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 00:45:39,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:39,702 INFO L375 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-10-01 00:45:39,703 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:39,703 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:39,703 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-10-01 00:45:39,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:39,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:39,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:39,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:39,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:40,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:40,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:40,504 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:46:19,461 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2018-10-01 00:46:19,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:19,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:19,948 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:19,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 00:46:19,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 00:46:19,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 00:46:19,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:19,950 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-10-01 00:46:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:21,112 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-10-01 00:46:21,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 00:46:21,112 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-10-01 00:46:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:21,113 INFO L225 Difference]: With dead ends: 259 [2018-10-01 00:46:21,113 INFO L226 Difference]: Without dead ends: 257 [2018-10-01 00:46:21,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:46:21,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-01 00:46:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-10-01 00:46:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-01 00:46:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-10-01 00:46:21,117 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-10-01 00:46:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:21,117 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-10-01 00:46:21,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 00:46:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-10-01 00:46:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-01 00:46:21,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:21,118 INFO L375 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-10-01 00:46:21,118 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:21,119 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:21,119 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-10-01 00:46:21,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:21,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:21,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:21,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:21,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:21,975 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:21,975 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:21,982 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:46:29,779 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-10-01 00:46:29,780 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:29,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:30,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:30,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-10-01 00:46:30,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-10-01 00:46:30,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-10-01 00:46:30,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:30,246 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-10-01 00:46:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:31,325 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-01 00:46:31,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 00:46:31,325 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-10-01 00:46:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:31,326 INFO L225 Difference]: With dead ends: 261 [2018-10-01 00:46:31,326 INFO L226 Difference]: Without dead ends: 259 [2018-10-01 00:46:31,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:46:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-01 00:46:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-01 00:46:31,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-01 00:46:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-01 00:46:31,329 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-10-01 00:46:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:31,329 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-01 00:46:31,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-10-01 00:46:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-01 00:46:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-01 00:46:31,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:31,330 INFO L375 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-10-01 00:46:31,331 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:31,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:31,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-10-01 00:46:31,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:31,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:31,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:31,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:31,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:32,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:32,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:32,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:32,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:32,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:32,728 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-10-01 00:46:32,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 00:46:32,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 00:46:32,729 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:32,730 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-10-01 00:46:33,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:33,849 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-10-01 00:46:33,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 00:46:33,850 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-10-01 00:46:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:33,851 INFO L225 Difference]: With dead ends: 263 [2018-10-01 00:46:33,851 INFO L226 Difference]: Without dead ends: 261 [2018-10-01 00:46:33,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:46:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-01 00:46:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-10-01 00:46:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-10-01 00:46:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-10-01 00:46:33,855 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-10-01 00:46:33,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:33,855 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-10-01 00:46:33,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 00:46:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-10-01 00:46:33,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-01 00:46:33,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:33,856 INFO L375 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-10-01 00:46:33,856 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:33,857 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:33,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-10-01 00:46:33,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:33,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:33,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:33,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:33,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:34,686 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:34,686 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:34,696 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:46:34,784 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:46:34,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:34,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:35,248 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:35,248 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-10-01 00:46:35,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-01 00:46:35,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-01 00:46:35,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:35,250 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-10-01 00:46:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:36,572 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-01 00:46:36,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 00:46:36,572 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-10-01 00:46:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:36,573 INFO L225 Difference]: With dead ends: 265 [2018-10-01 00:46:36,573 INFO L226 Difference]: Without dead ends: 263 [2018-10-01 00:46:36,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:46:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-01 00:46:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-01 00:46:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-01 00:46:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-10-01 00:46:36,577 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-10-01 00:46:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:36,577 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-10-01 00:46:36,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-01 00:46:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-10-01 00:46:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-01 00:46:36,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:36,579 INFO L375 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-10-01 00:46:36,579 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:36,579 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:36,579 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-10-01 00:46:36,579 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:36,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:36,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:36,580 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:36,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:37,429 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:37,429 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:37,436 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:46:49,526 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 130 check-sat command(s) [2018-10-01 00:46:49,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:49,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:50,001 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:50,002 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-10-01 00:46:50,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 00:46:50,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 00:46:50,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:50,003 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-10-01 00:46:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:51,274 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-10-01 00:46:51,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 00:46:51,274 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-10-01 00:46:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:51,275 INFO L225 Difference]: With dead ends: 267 [2018-10-01 00:46:51,275 INFO L226 Difference]: Without dead ends: 265 [2018-10-01 00:46:51,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:46:51,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-01 00:46:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-10-01 00:46:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-01 00:46:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-10-01 00:46:51,278 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-10-01 00:46:51,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:51,279 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-10-01 00:46:51,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 00:46:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-10-01 00:46:51,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-01 00:46:51,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:51,280 INFO L375 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-10-01 00:46:51,280 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:51,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:51,280 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-10-01 00:46:51,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:51,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:51,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:51,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:51,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:52,145 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:52,145 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:52,152 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:46:52,243 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:46:52,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:52,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:52,712 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:52,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-10-01 00:46:52,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-10-01 00:46:52,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-10-01 00:46:52,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:52,714 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-10-01 00:46:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:54,130 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-01 00:46:54,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 00:46:54,131 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-10-01 00:46:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:54,131 INFO L225 Difference]: With dead ends: 269 [2018-10-01 00:46:54,131 INFO L226 Difference]: Without dead ends: 267 [2018-10-01 00:46:54,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:46:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-01 00:46:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-10-01 00:46:54,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-01 00:46:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-10-01 00:46:54,135 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-10-01 00:46:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:54,135 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-10-01 00:46:54,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-10-01 00:46:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-10-01 00:46:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-01 00:46:54,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:54,136 INFO L375 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-10-01 00:46:54,136 INFO L423 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:54,136 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:54,136 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-10-01 00:46:54,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:54,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:54,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:54,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:54,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:55,002 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:55,002 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:55,009 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:47:49,166 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 132 check-sat command(s) [2018-10-01 00:47:49,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:49,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:49,662 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:49,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-10-01 00:47:49,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 00:47:49,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 00:47:49,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:49,664 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-10-01 00:47:50,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:50,612 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-10-01 00:47:50,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 00:47:50,612 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-10-01 00:47:50,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:50,613 INFO L225 Difference]: With dead ends: 271 [2018-10-01 00:47:50,613 INFO L226 Difference]: Without dead ends: 269 [2018-10-01 00:47:50,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:47:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-01 00:47:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-10-01 00:47:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-01 00:47:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-10-01 00:47:50,616 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-10-01 00:47:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:50,616 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-10-01 00:47:50,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 00:47:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-10-01 00:47:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-01 00:47:50,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:50,617 INFO L375 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-10-01 00:47:50,618 INFO L423 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:50,618 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:50,618 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-10-01 00:47:50,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:50,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:50,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:50,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:50,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:51,494 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:51,494 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:51,501 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:48:00,947 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 133 check-sat command(s) [2018-10-01 00:48:00,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:00,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:01,440 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:01,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-10-01 00:48:01,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-10-01 00:48:01,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-10-01 00:48:01,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:01,442 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-10-01 00:48:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:02,977 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-01 00:48:02,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 00:48:02,977 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-10-01 00:48:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:02,978 INFO L225 Difference]: With dead ends: 273 [2018-10-01 00:48:02,978 INFO L226 Difference]: Without dead ends: 271 [2018-10-01 00:48:02,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:48:02,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-01 00:48:02,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-01 00:48:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-01 00:48:02,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-01 00:48:02,981 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-10-01 00:48:02,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:02,981 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-01 00:48:02,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-10-01 00:48:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-01 00:48:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-01 00:48:02,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:02,982 INFO L375 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-10-01 00:48:02,982 INFO L423 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:02,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:02,983 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-10-01 00:48:02,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:02,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:02,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:02,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:02,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:03,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:03,878 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:03,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:48:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:03,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:04,492 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:04,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-10-01 00:48:04,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 00:48:04,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 00:48:04,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:04,494 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-10-01 00:48:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:05,650 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-10-01 00:48:05,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 00:48:05,650 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-10-01 00:48:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:05,651 INFO L225 Difference]: With dead ends: 275 [2018-10-01 00:48:05,651 INFO L226 Difference]: Without dead ends: 273 [2018-10-01 00:48:05,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:48:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-10-01 00:48:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-10-01 00:48:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-10-01 00:48:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-10-01 00:48:05,655 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-10-01 00:48:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:05,655 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-10-01 00:48:05,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 00:48:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-10-01 00:48:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-01 00:48:05,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:05,656 INFO L375 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-10-01 00:48:05,656 INFO L423 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:05,656 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:05,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-10-01 00:48:05,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:05,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:05,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:05,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:48:05,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:06,538 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:06,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:06,545 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:48:06,639 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:48:06,639 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:06,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:07,138 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:07,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-10-01 00:48:07,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-01 00:48:07,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-01 00:48:07,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:07,140 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-10-01 00:48:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:08,661 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-01 00:48:08,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 00:48:08,661 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-10-01 00:48:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:08,662 INFO L225 Difference]: With dead ends: 277 [2018-10-01 00:48:08,662 INFO L226 Difference]: Without dead ends: 275 [2018-10-01 00:48:08,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:48:08,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-01 00:48:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-10-01 00:48:08,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-01 00:48:08,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-10-01 00:48:08,666 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-10-01 00:48:08,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:08,666 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-10-01 00:48:08,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-01 00:48:08,667 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-10-01 00:48:08,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-01 00:48:08,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:08,668 INFO L375 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-10-01 00:48:08,668 INFO L423 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:08,668 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:08,668 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-10-01 00:48:08,668 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:08,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:08,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:08,669 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:08,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:09,688 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:09,688 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:09,695 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:48:23,808 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 136 check-sat command(s) [2018-10-01 00:48:23,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:23,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:24,301 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:24,301 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-10-01 00:48:24,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 00:48:24,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 00:48:24,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:24,303 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-10-01 00:48:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:25,284 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-10-01 00:48:25,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 00:48:25,284 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-10-01 00:48:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:25,285 INFO L225 Difference]: With dead ends: 279 [2018-10-01 00:48:25,285 INFO L226 Difference]: Without dead ends: 277 [2018-10-01 00:48:25,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:48:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-10-01 00:48:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-10-01 00:48:25,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-10-01 00:48:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-10-01 00:48:25,288 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-10-01 00:48:25,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:25,289 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-10-01 00:48:25,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 00:48:25,289 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-10-01 00:48:25,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-01 00:48:25,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:25,290 INFO L375 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-10-01 00:48:25,290 INFO L423 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:25,290 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:25,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-10-01 00:48:25,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:25,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:25,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:25,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:25,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:26,360 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:26,360 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:26,369 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:48:26,466 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:48:26,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:26,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:26,991 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:26,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2018-10-01 00:48:26,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-10-01 00:48:26,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-10-01 00:48:26,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:26,993 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-10-01 00:48:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:28,436 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-10-01 00:48:28,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 00:48:28,437 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-10-01 00:48:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:28,437 INFO L225 Difference]: With dead ends: 281 [2018-10-01 00:48:28,437 INFO L226 Difference]: Without dead ends: 279 [2018-10-01 00:48:28,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:48:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-01 00:48:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-10-01 00:48:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-01 00:48:28,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-10-01 00:48:28,442 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-10-01 00:48:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:28,442 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-10-01 00:48:28,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-10-01 00:48:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-10-01 00:48:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-01 00:48:28,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:28,443 INFO L375 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-10-01 00:48:28,444 INFO L423 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:28,444 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:28,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-10-01 00:48:28,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:28,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:28,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:28,444 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:28,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:29,383 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:29,383 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:29,389 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:50:17,533 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2018-10-01 00:50:17,534 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:17,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:18,086 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:18,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-10-01 00:50:18,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 00:50:18,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 00:50:18,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:18,088 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-10-01 00:50:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:19,710 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-10-01 00:50:19,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 00:50:19,711 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-10-01 00:50:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:19,711 INFO L225 Difference]: With dead ends: 283 [2018-10-01 00:50:19,712 INFO L226 Difference]: Without dead ends: 281 [2018-10-01 00:50:19,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:50:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-10-01 00:50:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-10-01 00:50:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-10-01 00:50:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-10-01 00:50:19,715 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-10-01 00:50:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:19,715 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-10-01 00:50:19,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 00:50:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-10-01 00:50:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-01 00:50:19,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:19,716 INFO L375 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-10-01 00:50:19,716 INFO L423 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:19,716 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:19,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-10-01 00:50:19,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:19,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:19,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:19,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:19,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:20,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:20,654 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:20,662 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:50:31,932 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 139 check-sat command(s) [2018-10-01 00:50:31,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:31,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:32,446 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:32,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2018-10-01 00:50:32,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-10-01 00:50:32,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-10-01 00:50:32,448 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:32,448 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-10-01 00:50:33,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:33,707 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-01 00:50:33,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 00:50:33,707 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-10-01 00:50:33,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:33,708 INFO L225 Difference]: With dead ends: 285 [2018-10-01 00:50:33,708 INFO L226 Difference]: Without dead ends: 283 [2018-10-01 00:50:33,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:50:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-01 00:50:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-10-01 00:50:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-01 00:50:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-10-01 00:50:33,711 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-10-01 00:50:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:33,711 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-10-01 00:50:33,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-10-01 00:50:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-10-01 00:50:33,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-01 00:50:33,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:33,712 INFO L375 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-10-01 00:50:33,712 INFO L423 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:33,712 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:33,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-10-01 00:50:33,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:33,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:33,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:33,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:33,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:34,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:34,874 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:34,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:50:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:34,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:35,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:35,477 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-10-01 00:50:35,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 00:50:35,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 00:50:35,478 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:35,478 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-10-01 00:50:36,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:36,467 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-10-01 00:50:36,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 00:50:36,468 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-10-01 00:50:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:36,468 INFO L225 Difference]: With dead ends: 287 [2018-10-01 00:50:36,468 INFO L226 Difference]: Without dead ends: 285 [2018-10-01 00:50:36,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:50:36,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-10-01 00:50:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-10-01 00:50:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-10-01 00:50:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-10-01 00:50:36,472 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-10-01 00:50:36,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:36,472 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-10-01 00:50:36,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 00:50:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-10-01 00:50:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-01 00:50:36,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:36,473 INFO L375 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-10-01 00:50:36,473 INFO L423 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:36,474 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:36,474 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-10-01 00:50:36,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:36,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:36,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:36,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:50:36,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:37,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:37,451 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:37,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:50:37,559 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:50:37,559 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:37,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:38,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:38,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2018-10-01 00:50:38,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-10-01 00:50:38,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-10-01 00:50:38,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:38,089 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-10-01 00:50:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:39,185 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-10-01 00:50:39,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 00:50:39,186 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-10-01 00:50:39,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:39,186 INFO L225 Difference]: With dead ends: 289 [2018-10-01 00:50:39,187 INFO L226 Difference]: Without dead ends: 287 [2018-10-01 00:50:39,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:50:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-01 00:50:39,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-10-01 00:50:39,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-01 00:50:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-10-01 00:50:39,191 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-10-01 00:50:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:39,191 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-10-01 00:50:39,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-10-01 00:50:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-10-01 00:50:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-01 00:50:39,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:39,193 INFO L375 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-10-01 00:50:39,193 INFO L423 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:39,193 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:39,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-10-01 00:50:39,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:39,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:39,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:39,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:39,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:40,148 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:40,148 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:40,155 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:50:57,754 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 142 check-sat command(s) [2018-10-01 00:50:57,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:57,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:58,305 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:58,305 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-10-01 00:50:58,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 00:50:58,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 00:50:58,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:58,307 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-10-01 00:50:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:59,314 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-10-01 00:50:59,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 00:50:59,314 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-10-01 00:50:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:59,315 INFO L225 Difference]: With dead ends: 291 [2018-10-01 00:50:59,315 INFO L226 Difference]: Without dead ends: 289 [2018-10-01 00:50:59,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:50:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-10-01 00:50:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-10-01 00:50:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-10-01 00:50:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-10-01 00:50:59,318 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-10-01 00:50:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:59,319 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-10-01 00:50:59,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 00:50:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-10-01 00:50:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-01 00:50:59,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:59,320 INFO L375 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-10-01 00:50:59,320 INFO L423 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:59,320 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:59,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-10-01 00:50:59,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:59,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:59,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:59,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:59,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:00,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:00,524 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:00,531 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:51:00,630 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:51:00,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:00,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:01,154 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:01,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2018-10-01 00:51:01,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-10-01 00:51:01,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-10-01 00:51:01,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:01,157 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-10-01 00:51:02,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:02,258 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-10-01 00:51:02,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 00:51:02,259 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-10-01 00:51:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:02,259 INFO L225 Difference]: With dead ends: 293 [2018-10-01 00:51:02,259 INFO L226 Difference]: Without dead ends: 291 [2018-10-01 00:51:02,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:51:02,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-01 00:51:02,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-10-01 00:51:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-10-01 00:51:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-10-01 00:51:02,262 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-10-01 00:51:02,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:02,263 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-10-01 00:51:02,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-10-01 00:51:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-10-01 00:51:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-01 00:51:02,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:02,264 INFO L375 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-10-01 00:51:02,264 INFO L423 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:02,264 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:02,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-10-01 00:51:02,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:02,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:02,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:02,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:02,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:03,234 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:03,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:03,243 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown