java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 01:03:14,558 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 01:03:14,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 01:03:14,573 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 01:03:14,612 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 01:03:14,639 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 01:03:14,640 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 01:03:14,640 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 01:03:14,640 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 01:03:14,641 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 01:03:14,641 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 01:03:14,641 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 01:03:14,642 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 01:03:14,642 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 01:03:14,642 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 01:03:14,642 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 01:03:14,643 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 01:03:14,643 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 01:03:14,643 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 01:03:14,643 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 01:03:14,643 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 01:03:14,643 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 01:03:14,644 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 01:03:14,644 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 01:03:14,644 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 01:03:14,644 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 01:03:14,644 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 01:03:14,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:03:14,645 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 01:03:14,645 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 01:03:14,645 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 01:03:14,645 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 01:03:14,646 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 01:03:14,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 01:03:14,646 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 01:03:14,646 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 01:03:14,692 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 01:03:14,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 01:03:14,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 01:03:14,710 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 01:03:14,710 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 01:03:14,711 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl [2018-10-01 01:03:14,711 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl' [2018-10-01 01:03:14,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 01:03:14,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 01:03:14,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 01:03:14,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 01:03:14,765 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 01:03:14,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/1) ... [2018-10-01 01:03:14,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/1) ... [2018-10-01 01:03:14,802 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-01 01:03:14,802 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-01 01:03:14,803 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-01 01:03:14,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 01:03:14,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 01:03:14,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 01:03:14,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 01:03:14,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/1) ... [2018-10-01 01:03:14,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/1) ... [2018-10-01 01:03:14,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/1) ... [2018-10-01 01:03:14,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/1) ... [2018-10-01 01:03:14,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/1) ... [2018-10-01 01:03:14,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/1) ... [2018-10-01 01:03:14,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/1) ... [2018-10-01 01:03:14,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 01:03:14,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 01:03:14,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 01:03:14,830 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 01:03:14,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (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 01:03:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-01 01:03:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-01 01:03:15,099 INFO L345 CfgBuilder]: Using library mode [2018-10-01 01:03:15,100 INFO L202 PluginConnector]: Adding new model LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:03:15 BoogieIcfgContainer [2018-10-01 01:03:15,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 01:03:15,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 01:03:15,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 01:03:15,105 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 01:03:15,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:14" (1/2) ... [2018-10-01 01:03:15,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d630e5 and model type LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 01:03:15, skipping insertion in model container [2018-10-01 01:03:15,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:03:15" (2/2) ... [2018-10-01 01:03:15,109 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Pointer-Reduced.bpl [2018-10-01 01:03:15,120 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 01:03:15,134 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 01:03:15,191 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 01:03:15,192 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 01:03:15,192 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 01:03:15,192 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 01:03:15,193 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 01:03:15,193 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 01:03:15,193 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 01:03:15,193 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 01:03:15,193 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 01:03:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-01 01:03:15,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-01 01:03:15,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:15,219 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-01 01:03:15,220 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:15,226 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:15,227 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-10-01 01:03:15,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:15,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:15,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:15,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:15,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:15,425 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 01:03:15,428 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 01:03:15,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-10-01 01:03:15,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 01:03:15,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 01:03:15,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:15,453 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-01 01:03:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:15,789 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 01:03:15,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 01:03:15,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-01 01:03:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:15,803 INFO L225 Difference]: With dead ends: 11 [2018-10-01 01:03:15,803 INFO L226 Difference]: Without dead ends: 6 [2018-10-01 01:03:15,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:03:15,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-01 01:03:15,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-01 01:03:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-01 01:03:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-01 01:03:15,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-10-01 01:03:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:15,843 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-01 01:03:15,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 01:03:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-01 01:03:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 01:03:15,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:15,844 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-01 01:03:15,844 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:15,844 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-10-01 01:03:15,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:15,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:15,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:15,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:15,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:15,925 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 01:03:15,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:15,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:15,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:15,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:16,044 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 01:03:16,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:16,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2018-10-01 01:03:16,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 01:03:16,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 01:03:16,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:16,069 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-10-01 01:03:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:16,252 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-01 01:03:16,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 01:03:16,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-10-01 01:03:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:16,253 INFO L225 Difference]: With dead ends: 9 [2018-10-01 01:03:16,253 INFO L226 Difference]: Without dead ends: 8 [2018-10-01 01:03:16,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:03:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-01 01:03:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-01 01:03:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-01 01:03:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-01 01:03:16,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-10-01 01:03:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:16,258 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-01 01:03:16,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 01:03:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-01 01:03:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 01:03:16,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:16,259 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-10-01 01:03:16,260 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:16,260 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-10-01 01:03:16,260 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:16,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:16,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:16,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:16,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:16,335 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 01:03:16,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:16,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:16,354 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:16,389 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:16,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:16,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:16,619 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 01:03:16,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:16,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2018-10-01 01:03:16,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 01:03:16,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 01:03:16,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:16,642 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2018-10-01 01:03:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:16,797 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 01:03:16,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 01:03:16,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-10-01 01:03:16,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:16,798 INFO L225 Difference]: With dead ends: 11 [2018-10-01 01:03:16,799 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 01:03:16,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:03:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 01:03:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 01:03:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 01:03:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-01 01:03:16,804 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-10-01 01:03:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:16,804 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-01 01:03:16,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 01:03:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-01 01:03:16,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-01 01:03:16,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:16,805 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-10-01 01:03:16,806 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:16,806 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:16,806 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-10-01 01:03:16,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:16,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:16,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:16,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:16,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:16,969 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 01:03:16,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:16,970 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 01:03:16,978 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:16,986 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-01 01:03:16,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:16,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:17,085 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 01:03:17,105 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:17,106 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2018-10-01 01:03:17,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 01:03:17,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 01:03:17,107 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:17,107 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2018-10-01 01:03:17,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:17,279 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 01:03:17,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 01:03:17,280 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2018-10-01 01:03:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:17,281 INFO L225 Difference]: With dead ends: 13 [2018-10-01 01:03:17,282 INFO L226 Difference]: Without dead ends: 12 [2018-10-01 01:03:17,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:03:17,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-01 01:03:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-01 01:03:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-01 01:03:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-01 01:03:17,287 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-10-01 01:03:17,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:17,287 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-01 01:03:17,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 01:03:17,287 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-01 01:03:17,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 01:03:17,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:17,288 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1] [2018-10-01 01:03:17,288 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:17,288 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:17,288 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times [2018-10-01 01:03:17,289 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:17,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:17,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:17,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:17,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:17,544 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 01:03:17,547 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:17,547 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 01:03:17,562 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:17,593 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:17,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:17,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:17,875 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 01:03:17,897 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:17,897 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2018-10-01 01:03:17,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 01:03:17,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 01:03:17,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:17,899 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-10-01 01:03:18,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:18,178 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 01:03:18,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 01:03:18,179 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2018-10-01 01:03:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:18,180 INFO L225 Difference]: With dead ends: 15 [2018-10-01 01:03:18,180 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 01:03:18,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:18,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 01:03:18,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 01:03:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 01:03:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-01 01:03:18,184 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-01 01:03:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:18,185 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-01 01:03:18,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 01:03:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-01 01:03:18,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 01:03:18,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:18,186 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1] [2018-10-01 01:03:18,186 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:18,186 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:18,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times [2018-10-01 01:03:18,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:18,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:18,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:18,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:18,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:18,312 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 01:03:18,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:18,313 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:18,323 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:18,333 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-01 01:03:18,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:18,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:18,476 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 01:03:18,498 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:18,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2018-10-01 01:03:18,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 01:03:18,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 01:03:18,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:18,499 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2018-10-01 01:03:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:18,725 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 01:03:18,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 01:03:18,725 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-10-01 01:03:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:18,727 INFO L225 Difference]: With dead ends: 17 [2018-10-01 01:03:18,727 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 01:03:18,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:03:18,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 01:03:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 01:03:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 01:03:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-01 01:03:18,732 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-10-01 01:03:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:18,732 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-01 01:03:18,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 01:03:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-01 01:03:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-01 01:03:18,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:18,733 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1] [2018-10-01 01:03:18,733 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:18,734 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:18,734 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times [2018-10-01 01:03:18,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:18,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:18,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:18,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:18,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:18,840 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 01:03:18,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:18,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:18,850 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:18,858 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 01:03:18,858 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:18,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:19,151 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 01:03:19,176 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:19,177 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2018-10-01 01:03:19,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 01:03:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 01:03:19,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:19,178 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 16 states. [2018-10-01 01:03:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:19,304 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 01:03:19,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 01:03:19,305 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2018-10-01 01:03:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:19,306 INFO L225 Difference]: With dead ends: 19 [2018-10-01 01:03:19,306 INFO L226 Difference]: Without dead ends: 18 [2018-10-01 01:03:19,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-01 01:03:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-01 01:03:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-01 01:03:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-01 01:03:19,311 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-10-01 01:03:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:19,312 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-01 01:03:19,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 01:03:19,312 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-01 01:03:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 01:03:19,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:19,313 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1] [2018-10-01 01:03:19,313 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:19,313 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times [2018-10-01 01:03:19,314 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:19,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:19,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:19,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:19,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:19,418 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 01:03:19,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:19,419 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 01:03:19,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:19,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:19,573 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 01:03:19,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:19,596 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2018-10-01 01:03:19,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 01:03:19,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 01:03:19,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:19,597 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-10-01 01:03:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:19,745 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 01:03:19,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 01:03:19,745 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-10-01 01:03:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:19,747 INFO L225 Difference]: With dead ends: 21 [2018-10-01 01:03:19,747 INFO L226 Difference]: Without dead ends: 20 [2018-10-01 01:03:19,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:03:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-01 01:03:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-01 01:03:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 01:03:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-01 01:03:19,752 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-10-01 01:03:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:19,752 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-01 01:03:19,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 01:03:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-01 01:03:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-01 01:03:19,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:19,753 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1] [2018-10-01 01:03:19,754 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:19,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:19,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times [2018-10-01 01:03:19,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:19,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:19,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:19,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:19,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:19,856 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 01:03:19,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:19,856 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 01:03:19,868 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:19,876 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:19,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:19,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:20,016 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 01:03:20,038 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:20,039 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2018-10-01 01:03:20,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 01:03:20,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 01:03:20,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:20,040 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 20 states. [2018-10-01 01:03:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:20,227 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 01:03:20,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 01:03:20,228 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2018-10-01 01:03:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:20,229 INFO L225 Difference]: With dead ends: 23 [2018-10-01 01:03:20,230 INFO L226 Difference]: Without dead ends: 22 [2018-10-01 01:03:20,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:03:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-01 01:03:20,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-01 01:03:20,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-01 01:03:20,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-01 01:03:20,234 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-10-01 01:03:20,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:20,234 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-01 01:03:20,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 01:03:20,235 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-01 01:03:20,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-01 01:03:20,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:20,236 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1] [2018-10-01 01:03:20,236 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:20,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:20,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times [2018-10-01 01:03:20,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:20,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:20,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:20,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:20,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:20,348 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 01:03:20,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:20,349 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:20,358 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:20,397 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-01 01:03:20,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:20,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:20,643 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 01:03:20,665 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:20,665 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2018-10-01 01:03:20,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 01:03:20,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 01:03:20,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:20,666 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 22 states. [2018-10-01 01:03:21,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:21,028 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 01:03:21,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 01:03:21,029 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2018-10-01 01:03:21,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:21,030 INFO L225 Difference]: With dead ends: 25 [2018-10-01 01:03:21,031 INFO L226 Difference]: Without dead ends: 24 [2018-10-01 01:03:21,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-01 01:03:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-01 01:03:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-01 01:03:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-01 01:03:21,036 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-10-01 01:03:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:21,036 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-01 01:03:21,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 01:03:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-01 01:03:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 01:03:21,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:21,037 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1] [2018-10-01 01:03:21,038 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:21,038 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times [2018-10-01 01:03:21,038 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:21,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:21,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,039 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:21,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:21,184 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 01:03:21,185 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:21,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:21,193 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:21,203 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:21,203 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:21,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:21,528 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 01:03:21,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:21,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2018-10-01 01:03:21,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 01:03:21,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 01:03:21,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:21,550 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 24 states. [2018-10-01 01:03:21,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:21,774 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 01:03:21,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 01:03:21,775 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 23 [2018-10-01 01:03:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:21,776 INFO L225 Difference]: With dead ends: 27 [2018-10-01 01:03:21,776 INFO L226 Difference]: Without dead ends: 26 [2018-10-01 01:03:21,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-01 01:03:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-01 01:03:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-01 01:03:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-01 01:03:21,783 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-10-01 01:03:21,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:21,783 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-01 01:03:21,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 01:03:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-01 01:03:21,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-01 01:03:21,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:21,784 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1] [2018-10-01 01:03:21,785 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:21,785 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:21,785 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times [2018-10-01 01:03:21,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:21,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:21,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:21,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:21,979 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 01:03:21,980 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:21,980 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 01:03:21,988 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:22,051 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-01 01:03:22,051 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:22,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:22,392 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 01:03:22,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:22,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2018-10-01 01:03:22,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 01:03:22,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 01:03:22,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:22,414 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 26 states. [2018-10-01 01:03:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:22,604 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 01:03:22,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 01:03:22,605 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25 [2018-10-01 01:03:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:22,606 INFO L225 Difference]: With dead ends: 29 [2018-10-01 01:03:22,606 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 01:03:22,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 01:03:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-01 01:03:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-01 01:03:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-01 01:03:22,612 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-10-01 01:03:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:22,612 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-01 01:03:22,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 01:03:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-01 01:03:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-01 01:03:22,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:22,613 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1] [2018-10-01 01:03:22,613 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:22,613 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:22,613 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times [2018-10-01 01:03:22,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:22,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:22,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:22,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:22,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:22,817 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 01:03:22,818 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:22,818 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 01:03:22,829 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:22,946 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 01:03:22,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:22,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:23,126 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 01:03:23,147 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:23,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2018-10-01 01:03:23,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 01:03:23,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 01:03:23,149 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:23,149 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 28 states. [2018-10-01 01:03:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:23,333 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 01:03:23,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 01:03:23,334 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 27 [2018-10-01 01:03:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:23,335 INFO L225 Difference]: With dead ends: 31 [2018-10-01 01:03:23,335 INFO L226 Difference]: Without dead ends: 30 [2018-10-01 01:03:23,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-01 01:03:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-01 01:03:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-01 01:03:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-01 01:03:23,340 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-10-01 01:03:23,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:23,341 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-01 01:03:23,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 01:03:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-01 01:03:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 01:03:23,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:23,342 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1] [2018-10-01 01:03:23,342 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:23,342 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:23,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times [2018-10-01 01:03:23,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:23,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:23,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:23,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:23,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:23,550 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 01:03:23,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:23,550 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:23,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:23,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:24,001 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 01:03:24,023 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:24,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2018-10-01 01:03:24,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 01:03:24,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 01:03:24,024 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:24,024 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 30 states. [2018-10-01 01:03:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:24,389 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 01:03:24,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 01:03:24,390 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29 [2018-10-01 01:03:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:24,391 INFO L225 Difference]: With dead ends: 33 [2018-10-01 01:03:24,392 INFO L226 Difference]: Without dead ends: 32 [2018-10-01 01:03:24,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-01 01:03:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-01 01:03:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-01 01:03:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-01 01:03:24,396 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-10-01 01:03:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:24,397 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-01 01:03:24,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 01:03:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-01 01:03:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-01 01:03:24,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:24,398 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1] [2018-10-01 01:03:24,398 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:24,398 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:24,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times [2018-10-01 01:03:24,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:24,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:24,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:24,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:24,611 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 01:03:24,612 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:24,612 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:24,622 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:24,633 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:24,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:24,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:24,864 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 01:03:24,884 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:24,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2018-10-01 01:03:24,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 01:03:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 01:03:24,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:24,886 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 32 states. [2018-10-01 01:03:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:25,201 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 01:03:25,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 01:03:25,201 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 31 [2018-10-01 01:03:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:25,202 INFO L225 Difference]: With dead ends: 35 [2018-10-01 01:03:25,203 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 01:03:25,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:25,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 01:03:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-01 01:03:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 01:03:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-01 01:03:25,208 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-10-01 01:03:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:25,208 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-01 01:03:25,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 01:03:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-01 01:03:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 01:03:25,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:25,209 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1] [2018-10-01 01:03:25,209 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:25,210 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:25,210 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times [2018-10-01 01:03:25,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:25,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:25,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:25,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:25,364 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 01:03:25,365 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:25,365 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 01:03:25,374 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:25,576 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-01 01:03:25,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:25,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:26,258 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 01:03:26,281 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:26,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2018-10-01 01:03:26,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 01:03:26,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 01:03:26,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:26,282 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 34 states. [2018-10-01 01:03:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:26,521 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 01:03:26,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 01:03:26,521 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 33 [2018-10-01 01:03:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:26,524 INFO L225 Difference]: With dead ends: 37 [2018-10-01 01:03:26,524 INFO L226 Difference]: Without dead ends: 36 [2018-10-01 01:03:26,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:03:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-01 01:03:26,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-01 01:03:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-01 01:03:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-01 01:03:26,530 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-10-01 01:03:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:26,530 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-01 01:03:26,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 01:03:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-01 01:03:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-01 01:03:26,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:26,531 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1] [2018-10-01 01:03:26,531 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:26,532 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:26,532 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times [2018-10-01 01:03:26,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:26,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:26,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:26,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:26,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:26,733 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 01:03:26,734 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:26,734 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 01:03:26,741 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:26,755 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:26,756 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:26,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:27,018 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 01:03:27,038 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:27,038 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2018-10-01 01:03:27,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 01:03:27,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 01:03:27,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:27,039 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 36 states. [2018-10-01 01:03:27,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:27,437 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 01:03:27,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 01:03:27,437 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2018-10-01 01:03:27,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:27,438 INFO L225 Difference]: With dead ends: 39 [2018-10-01 01:03:27,438 INFO L226 Difference]: Without dead ends: 38 [2018-10-01 01:03:27,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-01 01:03:27,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-01 01:03:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-01 01:03:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-01 01:03:27,444 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-10-01 01:03:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:27,444 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-01 01:03:27,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 01:03:27,445 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-01 01:03:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-01 01:03:27,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:27,445 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1] [2018-10-01 01:03:27,446 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:27,446 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:27,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times [2018-10-01 01:03:27,446 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:27,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:27,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:27,447 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:27,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:27,721 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 01:03:27,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:27,721 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 01:03:27,730 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:27,799 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-01 01:03:27,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:27,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:28,062 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 01:03:28,083 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:28,083 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2018-10-01 01:03:28,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 01:03:28,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 01:03:28,084 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:28,084 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 38 states. [2018-10-01 01:03:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:28,415 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 01:03:28,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 01:03:28,415 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 37 [2018-10-01 01:03:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:28,416 INFO L225 Difference]: With dead ends: 41 [2018-10-01 01:03:28,416 INFO L226 Difference]: Without dead ends: 40 [2018-10-01 01:03:28,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-01 01:03:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-01 01:03:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 01:03:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-01 01:03:28,422 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-10-01 01:03:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:28,423 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-01 01:03:28,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 01:03:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-01 01:03:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-01 01:03:28,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:28,424 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1] [2018-10-01 01:03:28,424 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:28,424 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:28,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times [2018-10-01 01:03:28,425 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:28,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:28,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:28,426 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:28,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:28,594 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 01:03:28,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:28,595 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 01:03:28,602 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:28,621 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 01:03:28,622 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:28,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:28,985 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 01:03:29,006 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:29,007 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38 [2018-10-01 01:03:29,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 01:03:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 01:03:29,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:29,008 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 40 states. [2018-10-01 01:03:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:29,330 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 01:03:29,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 01:03:29,331 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 39 [2018-10-01 01:03:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:29,332 INFO L225 Difference]: With dead ends: 43 [2018-10-01 01:03:29,332 INFO L226 Difference]: Without dead ends: 42 [2018-10-01 01:03:29,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-01 01:03:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-01 01:03:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-01 01:03:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-01 01:03:29,337 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-10-01 01:03:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:29,337 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-01 01:03:29,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 01:03:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-01 01:03:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-01 01:03:29,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:29,338 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1] [2018-10-01 01:03:29,338 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:29,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:29,339 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times [2018-10-01 01:03:29,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:29,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:29,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:29,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:29,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:29,495 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 01:03:29,495 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:29,495 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 01:03:29,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:29,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:29,803 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 01:03:29,824 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:29,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 40 [2018-10-01 01:03:29,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 01:03:29,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 01:03:29,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:29,825 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 42 states. [2018-10-01 01:03:30,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:30,158 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 01:03:30,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 01:03:30,159 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 41 [2018-10-01 01:03:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:30,160 INFO L225 Difference]: With dead ends: 45 [2018-10-01 01:03:30,160 INFO L226 Difference]: Without dead ends: 44 [2018-10-01 01:03:30,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-01 01:03:30,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-01 01:03:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-01 01:03:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-01 01:03:30,165 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-10-01 01:03:30,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:30,166 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-01 01:03:30,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 01:03:30,166 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-01 01:03:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 01:03:30,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:30,167 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1] [2018-10-01 01:03:30,167 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:30,167 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:30,167 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times [2018-10-01 01:03:30,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:30,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:30,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:30,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:30,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:30,548 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 01:03:30,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:30,548 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 01:03:30,557 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:30,567 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:30,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:30,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:30,921 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 01:03:30,944 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:30,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 42 [2018-10-01 01:03:30,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 01:03:30,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 01:03:30,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:30,945 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 44 states. [2018-10-01 01:03:31,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:31,327 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 01:03:31,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 01:03:31,328 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 43 [2018-10-01 01:03:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:31,328 INFO L225 Difference]: With dead ends: 47 [2018-10-01 01:03:31,329 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 01:03:31,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 01:03:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 01:03:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 01:03:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-01 01:03:31,334 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2018-10-01 01:03:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:31,334 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-01 01:03:31,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 01:03:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-01 01:03:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-01 01:03:31,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:31,335 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1] [2018-10-01 01:03:31,336 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:31,336 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:31,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times [2018-10-01 01:03:31,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:31,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:31,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:31,337 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:31,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:31,567 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 01:03:31,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:31,567 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 01:03:31,574 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:31,605 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-01 01:03:31,605 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:31,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:31,893 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 01:03:31,913 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:31,913 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 44 [2018-10-01 01:03:31,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 01:03:31,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 01:03:31,914 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:31,914 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 46 states. [2018-10-01 01:03:32,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:32,321 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 01:03:32,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 01:03:32,324 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 45 [2018-10-01 01:03:32,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:32,324 INFO L225 Difference]: With dead ends: 49 [2018-10-01 01:03:32,325 INFO L226 Difference]: Without dead ends: 48 [2018-10-01 01:03:32,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-01 01:03:32,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-01 01:03:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-01 01:03:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-01 01:03:32,331 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2018-10-01 01:03:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:32,331 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-01 01:03:32,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 01:03:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-01 01:03:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 01:03:32,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:32,332 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1] [2018-10-01 01:03:32,332 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:32,333 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:32,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times [2018-10-01 01:03:32,333 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:32,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:32,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:32,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:32,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:33,179 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 01:03:33,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:33,179 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 01:03:33,188 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:33,200 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:33,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:33,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:33,442 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 01:03:33,468 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:33,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2018-10-01 01:03:33,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 01:03:33,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 01:03:33,470 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:33,470 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 48 states. [2018-10-01 01:03:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:33,804 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 01:03:33,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 01:03:33,804 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 47 [2018-10-01 01:03:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:33,805 INFO L225 Difference]: With dead ends: 51 [2018-10-01 01:03:33,805 INFO L226 Difference]: Without dead ends: 50 [2018-10-01 01:03:33,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:03:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-01 01:03:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-01 01:03:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 01:03:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-01 01:03:33,810 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2018-10-01 01:03:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:33,811 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-01 01:03:33,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 01:03:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-01 01:03:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-01 01:03:33,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:33,812 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1] [2018-10-01 01:03:33,812 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:33,812 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:33,812 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times [2018-10-01 01:03:33,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:33,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:33,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:33,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:33,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:34,663 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 01:03:34,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:34,664 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 01:03:34,671 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:34,692 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-01 01:03:34,693 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:34,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:35,002 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 01:03:35,023 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:35,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2018-10-01 01:03:35,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 01:03:35,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 01:03:35,024 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:35,024 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 50 states. [2018-10-01 01:03:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:35,389 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 01:03:35,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 01:03:35,390 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 49 [2018-10-01 01:03:35,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:35,391 INFO L225 Difference]: With dead ends: 53 [2018-10-01 01:03:35,391 INFO L226 Difference]: Without dead ends: 52 [2018-10-01 01:03:35,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:03:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-01 01:03:35,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-01 01:03:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-01 01:03:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-01 01:03:35,395 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2018-10-01 01:03:35,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:35,395 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-01 01:03:35,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 01:03:35,396 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-01 01:03:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-01 01:03:35,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:35,396 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1] [2018-10-01 01:03:35,397 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:35,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:35,397 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times [2018-10-01 01:03:35,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:35,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:35,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:35,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:35,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:35,732 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 01:03:35,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:35,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:35,748 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:35,770 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 01:03:35,771 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:35,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:36,223 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 01:03:36,242 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:36,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 50 [2018-10-01 01:03:36,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 01:03:36,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 01:03:36,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:36,243 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 52 states. [2018-10-01 01:03:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:36,583 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 01:03:36,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 01:03:36,583 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 51 [2018-10-01 01:03:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:36,584 INFO L225 Difference]: With dead ends: 55 [2018-10-01 01:03:36,584 INFO L226 Difference]: Without dead ends: 54 [2018-10-01 01:03:36,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:03:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-01 01:03:36,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-01 01:03:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-01 01:03:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-01 01:03:36,588 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2018-10-01 01:03:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:36,588 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-01 01:03:36,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 01:03:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-01 01:03:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 01:03:36,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:36,589 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1] [2018-10-01 01:03:36,589 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:36,590 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:36,590 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times [2018-10-01 01:03:36,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:36,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:36,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:36,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:36,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:36,809 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 01:03:36,809 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:36,809 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:36,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:36,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:37,114 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 01:03:37,134 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:37,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52 [2018-10-01 01:03:37,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 01:03:37,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 01:03:37,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:37,136 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 54 states. [2018-10-01 01:03:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:37,645 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 01:03:37,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 01:03:37,645 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 53 [2018-10-01 01:03:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:37,646 INFO L225 Difference]: With dead ends: 57 [2018-10-01 01:03:37,646 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 01:03:37,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 01:03:37,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 01:03:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 01:03:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-01 01:03:37,651 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2018-10-01 01:03:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:37,651 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-01 01:03:37,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 01:03:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-01 01:03:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-01 01:03:37,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:37,652 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1] [2018-10-01 01:03:37,653 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:37,653 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:37,653 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times [2018-10-01 01:03:37,653 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:37,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:37,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:37,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:37,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:38,012 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 01:03:38,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:38,012 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:38,020 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:38,033 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:38,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:38,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:38,334 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 01:03:38,355 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:38,355 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 54 [2018-10-01 01:03:38,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 01:03:38,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 01:03:38,356 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:38,356 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 56 states. [2018-10-01 01:03:38,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:38,826 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 01:03:38,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 01:03:38,827 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 55 [2018-10-01 01:03:38,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:38,827 INFO L225 Difference]: With dead ends: 59 [2018-10-01 01:03:38,827 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 01:03:38,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 01:03:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-01 01:03:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-01 01:03:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-01 01:03:38,830 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2018-10-01 01:03:38,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:38,830 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-01 01:03:38,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 01:03:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-01 01:03:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-01 01:03:38,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:38,832 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1] [2018-10-01 01:03:38,832 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:38,832 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:38,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times [2018-10-01 01:03:38,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:38,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:38,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:38,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:38,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:39,087 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 01:03:39,087 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:39,087 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 01:03:39,096 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:39,121 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-01 01:03:39,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:39,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:39,488 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 01:03:39,508 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:39,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2018-10-01 01:03:39,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 01:03:39,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 01:03:39,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:39,510 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 58 states. [2018-10-01 01:03:39,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:39,857 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 01:03:39,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 01:03:39,858 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 57 [2018-10-01 01:03:39,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:39,859 INFO L225 Difference]: With dead ends: 61 [2018-10-01 01:03:39,859 INFO L226 Difference]: Without dead ends: 60 [2018-10-01 01:03:39,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-01 01:03:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-01 01:03:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-01 01:03:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-01 01:03:39,864 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2018-10-01 01:03:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:39,864 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-01 01:03:39,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 01:03:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-01 01:03:39,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-01 01:03:39,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:39,865 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1] [2018-10-01 01:03:39,866 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:39,866 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:39,866 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times [2018-10-01 01:03:39,866 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:39,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:39,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:39,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:39,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:40,104 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 01:03:40,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:40,105 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 01:03:40,112 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:40,130 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:40,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:40,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:41,184 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 01:03:41,204 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:41,204 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58 [2018-10-01 01:03:41,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 01:03:41,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 01:03:41,205 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:41,205 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 60 states. [2018-10-01 01:03:41,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:41,824 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 01:03:41,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 01:03:41,825 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 59 [2018-10-01 01:03:41,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:41,826 INFO L225 Difference]: With dead ends: 63 [2018-10-01 01:03:41,826 INFO L226 Difference]: Without dead ends: 62 [2018-10-01 01:03:41,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:03:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-01 01:03:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-01 01:03:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-01 01:03:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-01 01:03:41,831 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2018-10-01 01:03:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:41,831 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-01 01:03:41,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 01:03:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-01 01:03:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-01 01:03:41,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:41,832 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1] [2018-10-01 01:03:41,832 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:41,833 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:41,833 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times [2018-10-01 01:03:41,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:41,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:41,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:41,834 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:41,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:42,099 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 01:03:42,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:42,100 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:42,107 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:42,132 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-01 01:03:42,132 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:42,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:42,560 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 01:03:42,580 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:42,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 60 [2018-10-01 01:03:42,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 01:03:42,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 01:03:42,581 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:42,581 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 62 states. [2018-10-01 01:03:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:43,098 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 01:03:43,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 01:03:43,099 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 61 [2018-10-01 01:03:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:43,100 INFO L225 Difference]: With dead ends: 65 [2018-10-01 01:03:43,100 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 01:03:43,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:43,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 01:03:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-01 01:03:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 01:03:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-01 01:03:43,103 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2018-10-01 01:03:43,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:43,103 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-01 01:03:43,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 01:03:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-01 01:03:43,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 01:03:43,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:43,104 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1] [2018-10-01 01:03:43,105 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:43,105 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times [2018-10-01 01:03:43,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:43,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:43,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:43,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:43,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:43,354 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 01:03:43,355 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:43,355 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 01:03:43,364 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:43,394 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 01:03:43,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:43,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:43,758 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 01:03:43,777 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:43,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 62 [2018-10-01 01:03:43,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 01:03:43,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 01:03:43,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:43,778 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 64 states. [2018-10-01 01:03:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:44,297 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 01:03:44,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 01:03:44,298 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 63 [2018-10-01 01:03:44,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:44,299 INFO L225 Difference]: With dead ends: 67 [2018-10-01 01:03:44,299 INFO L226 Difference]: Without dead ends: 66 [2018-10-01 01:03:44,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-01 01:03:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-01 01:03:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-01 01:03:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-01 01:03:44,303 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2018-10-01 01:03:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:44,304 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-01 01:03:44,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 01:03:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-01 01:03:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 01:03:44,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:44,304 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1] [2018-10-01 01:03:44,305 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:44,305 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:44,305 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times [2018-10-01 01:03:44,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:44,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:44,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:44,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:44,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:44,730 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 01:03:44,730 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:44,731 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:44,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:44,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:45,126 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 01:03:45,145 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:45,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 64 [2018-10-01 01:03:45,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 01:03:45,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 01:03:45,147 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:45,147 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 66 states. [2018-10-01 01:03:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:45,583 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 01:03:45,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 01:03:45,583 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 65 [2018-10-01 01:03:45,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:45,584 INFO L225 Difference]: With dead ends: 69 [2018-10-01 01:03:45,584 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 01:03:45,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:03:45,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 01:03:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-01 01:03:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-01 01:03:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-01 01:03:45,588 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2018-10-01 01:03:45,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:45,588 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-01 01:03:45,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 01:03:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-01 01:03:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-01 01:03:45,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:45,589 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1] [2018-10-01 01:03:45,589 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:45,589 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:45,589 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times [2018-10-01 01:03:45,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:45,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:45,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:45,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:45,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:45,930 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 01:03:45,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:45,930 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:45,937 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:45,957 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:45,957 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:45,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:46,402 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 01:03:46,422 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:46,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 66 [2018-10-01 01:03:46,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 01:03:46,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 01:03:46,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:46,424 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 68 states. [2018-10-01 01:03:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:46,914 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 01:03:46,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 01:03:46,915 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 67 [2018-10-01 01:03:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:46,916 INFO L225 Difference]: With dead ends: 71 [2018-10-01 01:03:46,916 INFO L226 Difference]: Without dead ends: 70 [2018-10-01 01:03:46,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:03:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-01 01:03:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-01 01:03:46,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 01:03:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-01 01:03:46,921 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2018-10-01 01:03:46,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:46,922 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-01 01:03:46,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 01:03:46,922 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-01 01:03:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-01 01:03:46,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:46,922 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1] [2018-10-01 01:03:46,923 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:46,923 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:46,923 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times [2018-10-01 01:03:46,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:46,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:46,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:46,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:46,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:47,374 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 01:03:47,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:47,374 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 01:03:47,383 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:47,420 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-01 01:03:47,420 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:47,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:48,008 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 01:03:48,028 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:48,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 68 [2018-10-01 01:03:48,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 01:03:48,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 01:03:48,029 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:48,029 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 70 states. [2018-10-01 01:03:48,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:48,567 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 01:03:48,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 01:03:48,568 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 69 [2018-10-01 01:03:48,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:48,569 INFO L225 Difference]: With dead ends: 73 [2018-10-01 01:03:48,569 INFO L226 Difference]: Without dead ends: 72 [2018-10-01 01:03:48,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:03:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-01 01:03:48,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-01 01:03:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-01 01:03:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-01 01:03:48,573 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2018-10-01 01:03:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:48,573 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-01 01:03:48,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 01:03:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-01 01:03:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-01 01:03:48,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:48,574 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1] [2018-10-01 01:03:48,574 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:48,574 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:48,574 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times [2018-10-01 01:03:48,574 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:48,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:48,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:48,575 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:48,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:49,039 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 01:03:49,039 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:49,039 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 01:03:49,049 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:49,068 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:49,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:49,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:49,508 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 01:03:49,529 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:49,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 70 [2018-10-01 01:03:49,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 01:03:49,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 01:03:49,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:49,530 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 72 states. [2018-10-01 01:03:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:49,973 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 01:03:49,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 01:03:49,974 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 71 [2018-10-01 01:03:49,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:49,974 INFO L225 Difference]: With dead ends: 75 [2018-10-01 01:03:49,975 INFO L226 Difference]: Without dead ends: 74 [2018-10-01 01:03:49,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:03:49,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-01 01:03:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-01 01:03:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-01 01:03:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-01 01:03:49,979 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2018-10-01 01:03:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:49,979 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-01 01:03:49,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 01:03:49,979 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-01 01:03:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 01:03:49,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:49,980 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1] [2018-10-01 01:03:49,980 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:49,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:49,980 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times [2018-10-01 01:03:49,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:49,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:49,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:49,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:49,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:50,327 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 01:03:50,327 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:50,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:50,334 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:50,367 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-01 01:03:50,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:50,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:50,844 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 01:03:50,863 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:50,863 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 72 [2018-10-01 01:03:50,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 01:03:50,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 01:03:50,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:50,864 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 74 states. [2018-10-01 01:03:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:51,838 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 01:03:51,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 01:03:51,838 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 73 [2018-10-01 01:03:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:51,839 INFO L225 Difference]: With dead ends: 77 [2018-10-01 01:03:51,839 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 01:03:51,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:03:51,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 01:03:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 01:03:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 01:03:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-01 01:03:51,842 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2018-10-01 01:03:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:51,842 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-01 01:03:51,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 01:03:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-01 01:03:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-01 01:03:51,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:51,843 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1] [2018-10-01 01:03:51,843 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:51,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times [2018-10-01 01:03:51,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:51,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:51,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:51,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:51,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:52,224 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 01:03:52,224 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:52,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:52,232 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:52,270 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 01:03:52,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:52,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:52,849 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 01:03:52,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:52,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 74 [2018-10-01 01:03:52,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 01:03:52,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 01:03:52,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:52,870 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 76 states. [2018-10-01 01:03:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:53,370 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 01:03:53,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 01:03:53,370 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 75 [2018-10-01 01:03:53,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:53,371 INFO L225 Difference]: With dead ends: 79 [2018-10-01 01:03:53,371 INFO L226 Difference]: Without dead ends: 78 [2018-10-01 01:03:53,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:03:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-01 01:03:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-01 01:03:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-01 01:03:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-01 01:03:53,375 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2018-10-01 01:03:53,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:53,375 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-01 01:03:53,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 01:03:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-01 01:03:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 01:03:53,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:53,376 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1] [2018-10-01 01:03:53,376 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:53,376 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:53,377 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times [2018-10-01 01:03:53,377 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:53,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:53,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:53,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:53,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:54,029 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 01:03:54,030 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:54,030 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 01:03:54,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:54,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:54,533 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 01:03:54,553 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:54,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 76 [2018-10-01 01:03:54,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 01:03:54,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 01:03:54,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:54,554 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 78 states. [2018-10-01 01:03:55,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:55,217 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 01:03:55,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 01:03:55,218 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 77 [2018-10-01 01:03:55,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:55,219 INFO L225 Difference]: With dead ends: 81 [2018-10-01 01:03:55,219 INFO L226 Difference]: Without dead ends: 80 [2018-10-01 01:03:55,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:03:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-01 01:03:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-01 01:03:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-01 01:03:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-01 01:03:55,224 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2018-10-01 01:03:55,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:55,225 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-01 01:03:55,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 01:03:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-01 01:03:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-01 01:03:55,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:55,225 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1] [2018-10-01 01:03:55,226 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:55,226 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:55,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times [2018-10-01 01:03:55,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:55,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:55,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:55,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:55,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:55,514 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 01:03:55,514 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:55,514 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:55,522 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:55,541 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:55,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:55,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:55,995 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 01:03:56,016 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:56,016 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 78 [2018-10-01 01:03:56,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 01:03:56,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 01:03:56,017 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:56,017 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 80 states. [2018-10-01 01:03:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:56,612 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-01 01:03:56,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 01:03:56,613 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 79 [2018-10-01 01:03:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:56,614 INFO L225 Difference]: With dead ends: 83 [2018-10-01 01:03:56,614 INFO L226 Difference]: Without dead ends: 82 [2018-10-01 01:03:56,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-01 01:03:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-01 01:03:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-01 01:03:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-01 01:03:56,619 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2018-10-01 01:03:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:56,619 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-01 01:03:56,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 01:03:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-01 01:03:56,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-01 01:03:56,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:56,620 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1] [2018-10-01 01:03:56,620 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:56,620 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:56,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times [2018-10-01 01:03:56,621 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:56,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:56,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:56,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:56,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:57,139 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 01:03:57,140 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:57,140 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 01:03:57,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:57,183 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-01 01:03:57,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:57,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:57,931 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 01:03:57,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:57,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 80 [2018-10-01 01:03:57,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 01:03:57,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 01:03:57,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:57,952 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 82 states. [2018-10-01 01:03:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:58,619 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 01:03:58,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 01:03:58,619 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 81 [2018-10-01 01:03:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:58,620 INFO L225 Difference]: With dead ends: 85 [2018-10-01 01:03:58,620 INFO L226 Difference]: Without dead ends: 84 [2018-10-01 01:03:58,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:03:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-01 01:03:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-01 01:03:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-01 01:03:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-01 01:03:58,623 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2018-10-01 01:03:58,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:58,624 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-01 01:03:58,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 01:03:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-01 01:03:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 01:03:58,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:58,625 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1] [2018-10-01 01:03:58,625 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:58,625 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times [2018-10-01 01:03:58,625 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:58,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:58,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:58,626 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:58,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:59,009 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 01:03:59,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:59,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:03:59,016 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:59,040 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:59,041 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:59,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:59,561 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 01:03:59,581 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:59,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 82 [2018-10-01 01:03:59,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 01:03:59,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 01:03:59,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:59,583 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 84 states. [2018-10-01 01:04:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:00,302 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-01 01:04:00,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 01:04:00,303 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 83 [2018-10-01 01:04:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:00,304 INFO L225 Difference]: With dead ends: 87 [2018-10-01 01:04:00,304 INFO L226 Difference]: Without dead ends: 86 [2018-10-01 01:04:00,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:00,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-01 01:04:00,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-01 01:04:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-01 01:04:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-01 01:04:00,308 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2018-10-01 01:04:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:00,309 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-01 01:04:00,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 01:04:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-01 01:04:00,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-01 01:04:00,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:00,310 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1] [2018-10-01 01:04:00,310 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:00,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:00,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times [2018-10-01 01:04:00,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:00,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:00,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:00,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:00,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:01,032 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 01:04:01,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:01,033 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 01:04:01,040 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:01,080 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-01 01:04:01,080 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:01,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:01,638 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 01:04:01,657 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:01,658 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 84 [2018-10-01 01:04:01,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 01:04:01,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 01:04:01,659 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:01,659 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 86 states. [2018-10-01 01:04:02,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:02,288 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 01:04:02,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 01:04:02,288 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 85 [2018-10-01 01:04:02,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:02,289 INFO L225 Difference]: With dead ends: 89 [2018-10-01 01:04:02,289 INFO L226 Difference]: Without dead ends: 88 [2018-10-01 01:04:02,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:04:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-01 01:04:02,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-01 01:04:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-01 01:04:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-01 01:04:02,293 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2018-10-01 01:04:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:02,294 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-01 01:04:02,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 01:04:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-01 01:04:02,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-01 01:04:02,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:02,295 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1] [2018-10-01 01:04:02,295 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:02,295 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:02,295 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times [2018-10-01 01:04:02,295 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:02,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:02,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:02,296 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:02,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:02,687 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 01:04:02,688 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:02,688 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:02,695 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:02,733 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 01:04:02,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:02,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:03,458 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 01:04:03,478 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:03,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 86 [2018-10-01 01:04:03,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 01:04:03,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 01:04:03,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:03,480 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 88 states. [2018-10-01 01:04:04,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:04,032 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-01 01:04:04,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 01:04:04,032 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 87 [2018-10-01 01:04:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:04,033 INFO L225 Difference]: With dead ends: 91 [2018-10-01 01:04:04,033 INFO L226 Difference]: Without dead ends: 90 [2018-10-01 01:04:04,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:04:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-01 01:04:04,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-01 01:04:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-01 01:04:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-01 01:04:04,037 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2018-10-01 01:04:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:04,037 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-01 01:04:04,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 01:04:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-01 01:04:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-01 01:04:04,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:04,037 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1] [2018-10-01 01:04:04,038 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:04,038 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:04,038 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times [2018-10-01 01:04:04,038 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:04,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:04,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:04,039 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:04,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:04,991 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 01:04:04,991 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:04,991 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:04,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:05,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:05,590 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 01:04:05,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:05,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 88 [2018-10-01 01:04:05,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 01:04:05,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 01:04:05,612 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:05,612 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 90 states. [2018-10-01 01:04:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:06,218 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 01:04:06,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 01:04:06,219 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 89 [2018-10-01 01:04:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:06,219 INFO L225 Difference]: With dead ends: 93 [2018-10-01 01:04:06,219 INFO L226 Difference]: Without dead ends: 92 [2018-10-01 01:04:06,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:04:06,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-01 01:04:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-01 01:04:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-01 01:04:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-01 01:04:06,223 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2018-10-01 01:04:06,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:06,223 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-01 01:04:06,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 01:04:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-01 01:04:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-01 01:04:06,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:06,224 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1] [2018-10-01 01:04:06,225 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:06,225 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:06,225 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times [2018-10-01 01:04:06,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:06,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:06,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:06,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:06,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:06,634 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 01:04:06,635 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:06,635 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:06,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:06,683 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:06,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:06,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:07,272 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 01:04:07,292 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:07,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 90 [2018-10-01 01:04:07,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 01:04:07,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 01:04:07,293 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:07,294 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 92 states. [2018-10-01 01:04:07,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:07,972 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-01 01:04:07,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 01:04:07,972 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 91 [2018-10-01 01:04:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:07,973 INFO L225 Difference]: With dead ends: 95 [2018-10-01 01:04:07,973 INFO L226 Difference]: Without dead ends: 94 [2018-10-01 01:04:07,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:04:07,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-01 01:04:07,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-01 01:04:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-01 01:04:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-01 01:04:07,979 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2018-10-01 01:04:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:07,979 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-01 01:04:07,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 01:04:07,979 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-01 01:04:07,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-01 01:04:07,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:07,980 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1] [2018-10-01 01:04:07,980 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:07,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:07,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times [2018-10-01 01:04:07,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:07,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:07,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:07,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:07,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:08,408 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 01:04:08,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:08,409 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 01:04:08,417 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:08,542 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-01 01:04:08,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:08,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:09,200 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 01:04:09,219 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:09,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 92 [2018-10-01 01:04:09,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 01:04:09,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 01:04:09,221 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:09,221 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 94 states. [2018-10-01 01:04:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:09,825 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 01:04:09,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 01:04:09,826 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 93 [2018-10-01 01:04:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:09,826 INFO L225 Difference]: With dead ends: 97 [2018-10-01 01:04:09,827 INFO L226 Difference]: Without dead ends: 96 [2018-10-01 01:04:09,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:04:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-01 01:04:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-01 01:04:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-01 01:04:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-01 01:04:09,830 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-10-01 01:04:09,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:09,831 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-01 01:04:09,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 01:04:09,831 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-01 01:04:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-01 01:04:09,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:09,831 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1] [2018-10-01 01:04:09,832 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:09,832 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:09,832 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times [2018-10-01 01:04:09,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:09,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:09,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:09,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:09,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:10,295 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 01:04:10,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:10,295 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 01:04:10,303 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:10,326 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:10,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:10,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:11,017 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 01:04:11,038 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:11,038 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 94 [2018-10-01 01:04:11,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 01:04:11,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 01:04:11,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:11,040 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 96 states. [2018-10-01 01:04:11,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:11,674 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-01 01:04:11,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 01:04:11,674 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 95 [2018-10-01 01:04:11,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:11,675 INFO L225 Difference]: With dead ends: 99 [2018-10-01 01:04:11,675 INFO L226 Difference]: Without dead ends: 98 [2018-10-01 01:04:11,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:04:11,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-01 01:04:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-01 01:04:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-01 01:04:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-01 01:04:11,679 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2018-10-01 01:04:11,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:11,680 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-01 01:04:11,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 01:04:11,680 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-01 01:04:11,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-01 01:04:11,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:11,681 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1] [2018-10-01 01:04:11,681 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:11,681 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:11,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times [2018-10-01 01:04:11,681 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:11,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:11,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:11,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:11,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:12,381 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 01:04:12,381 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:12,381 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 01:04:12,388 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:12,435 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-01 01:04:12,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:12,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:13,333 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 01:04:13,353 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:13,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 96 [2018-10-01 01:04:13,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 01:04:13,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 01:04:13,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:13,355 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 98 states. [2018-10-01 01:04:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:14,016 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 01:04:14,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 01:04:14,016 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 97 [2018-10-01 01:04:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:14,017 INFO L225 Difference]: With dead ends: 101 [2018-10-01 01:04:14,017 INFO L226 Difference]: Without dead ends: 100 [2018-10-01 01:04:14,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:04:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-01 01:04:14,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-01 01:04:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-01 01:04:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-01 01:04:14,022 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2018-10-01 01:04:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:14,022 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-01 01:04:14,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 01:04:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-01 01:04:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-01 01:04:14,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:14,023 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1] [2018-10-01 01:04:14,024 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:14,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:14,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times [2018-10-01 01:04:14,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:14,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:14,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:14,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:14,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:14,405 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 01:04:14,405 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:14,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:14,413 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:14,460 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 01:04:14,460 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:14,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:15,072 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 01:04:15,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:15,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 98 [2018-10-01 01:04:15,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 01:04:15,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 01:04:15,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:15,093 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 100 states. [2018-10-01 01:04:15,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:15,688 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-01 01:04:15,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 01:04:15,688 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 99 [2018-10-01 01:04:15,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:15,689 INFO L225 Difference]: With dead ends: 103 [2018-10-01 01:04:15,689 INFO L226 Difference]: Without dead ends: 102 [2018-10-01 01:04:15,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:04:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-01 01:04:15,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-01 01:04:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-01 01:04:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-01 01:04:15,693 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2018-10-01 01:04:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:15,693 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-01 01:04:15,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 01:04:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-01 01:04:15,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-01 01:04:15,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:15,694 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1] [2018-10-01 01:04:15,695 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:15,695 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:15,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times [2018-10-01 01:04:15,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:15,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:15,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:15,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:15,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:16,089 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 01:04:16,089 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:16,089 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 01:04:16,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:16,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:17,594 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 01:04:17,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:17,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 100 [2018-10-01 01:04:17,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 01:04:17,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 01:04:17,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:17,615 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 102 states. [2018-10-01 01:04:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:18,259 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 01:04:18,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 01:04:18,260 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 101 [2018-10-01 01:04:18,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:18,261 INFO L225 Difference]: With dead ends: 105 [2018-10-01 01:04:18,261 INFO L226 Difference]: Without dead ends: 104 [2018-10-01 01:04:18,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:04:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-01 01:04:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-01 01:04:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-01 01:04:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-01 01:04:18,265 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2018-10-01 01:04:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:18,266 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-01 01:04:18,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 01:04:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-01 01:04:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-01 01:04:18,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:18,266 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1] [2018-10-01 01:04:18,267 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:18,267 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:18,267 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times [2018-10-01 01:04:18,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:18,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:18,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:18,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:18,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:18,733 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 01:04:18,733 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:18,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:18,741 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:18,776 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:18,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:18,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:19,506 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 01:04:19,526 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:19,526 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 102 [2018-10-01 01:04:19,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 01:04:19,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 01:04:19,528 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:19,528 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 104 states. [2018-10-01 01:04:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:20,601 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-01 01:04:20,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 01:04:20,602 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 103 [2018-10-01 01:04:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:20,602 INFO L225 Difference]: With dead ends: 107 [2018-10-01 01:04:20,603 INFO L226 Difference]: Without dead ends: 106 [2018-10-01 01:04:20,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:04:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-01 01:04:20,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-01 01:04:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-01 01:04:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-01 01:04:20,607 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2018-10-01 01:04:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:20,608 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-01 01:04:20,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 01:04:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-01 01:04:20,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-01 01:04:20,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:20,609 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1] [2018-10-01 01:04:20,609 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:20,609 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times [2018-10-01 01:04:20,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:20,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:20,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:20,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:20,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:20,974 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 01:04:20,975 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:20,975 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:20,982 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:21,033 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-01 01:04:21,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:21,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:21,767 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 01:04:21,787 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:21,787 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 104 [2018-10-01 01:04:21,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 01:04:21,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 01:04:21,789 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:21,789 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 106 states. [2018-10-01 01:04:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:22,562 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 01:04:22,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 01:04:22,562 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 105 [2018-10-01 01:04:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:22,563 INFO L225 Difference]: With dead ends: 109 [2018-10-01 01:04:22,563 INFO L226 Difference]: Without dead ends: 108 [2018-10-01 01:04:22,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:04:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-01 01:04:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-01 01:04:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-01 01:04:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-01 01:04:22,567 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2018-10-01 01:04:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:22,567 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-01 01:04:22,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 01:04:22,567 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-01 01:04:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 01:04:22,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:22,568 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1] [2018-10-01 01:04:22,568 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:22,568 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:22,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times [2018-10-01 01:04:22,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:22,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:22,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:22,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:22,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:23,131 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 01:04:23,131 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:23,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:23,146 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:23,193 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:23,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:23,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:24,762 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 01:04:24,782 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:24,782 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 106 [2018-10-01 01:04:24,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 01:04:24,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 01:04:24,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:24,784 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 108 states. [2018-10-01 01:04:25,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:25,725 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-01 01:04:25,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 01:04:25,725 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 107 [2018-10-01 01:04:25,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:25,726 INFO L225 Difference]: With dead ends: 111 [2018-10-01 01:04:25,726 INFO L226 Difference]: Without dead ends: 110 [2018-10-01 01:04:25,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:04:25,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-01 01:04:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-01 01:04:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-01 01:04:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-01 01:04:25,730 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2018-10-01 01:04:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:25,731 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-01 01:04:25,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 01:04:25,731 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-01 01:04:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-01 01:04:25,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:25,732 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1] [2018-10-01 01:04:25,732 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:25,732 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times [2018-10-01 01:04:25,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:25,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:25,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:25,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:25,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:26,390 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 01:04:26,390 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:26,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:26,409 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:26,542 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-01 01:04:26,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:26,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:27,500 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 01:04:27,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:27,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 108 [2018-10-01 01:04:27,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 01:04:27,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 01:04:27,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:27,522 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 110 states. [2018-10-01 01:04:28,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:28,171 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 01:04:28,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 01:04:28,171 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 109 [2018-10-01 01:04:28,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:28,172 INFO L225 Difference]: With dead ends: 113 [2018-10-01 01:04:28,172 INFO L226 Difference]: Without dead ends: 112 [2018-10-01 01:04:28,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:04:28,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-01 01:04:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-01 01:04:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-01 01:04:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-01 01:04:28,176 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2018-10-01 01:04:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:28,176 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-01 01:04:28,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 01:04:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-01 01:04:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-01 01:04:28,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:28,176 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1] [2018-10-01 01:04:28,177 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:28,177 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:28,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times [2018-10-01 01:04:28,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:28,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:28,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:28,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:28,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:28,763 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 01:04:28,763 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:28,763 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 01:04:28,773 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:28,825 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 01:04:28,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:28,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:29,687 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 01:04:29,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:29,707 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 110 [2018-10-01 01:04:29,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 01:04:29,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 01:04:29,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:29,709 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 112 states. [2018-10-01 01:04:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:31,179 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-01 01:04:31,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 01:04:31,180 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 111 [2018-10-01 01:04:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:31,181 INFO L225 Difference]: With dead ends: 115 [2018-10-01 01:04:31,181 INFO L226 Difference]: Without dead ends: 114 [2018-10-01 01:04:31,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:04:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-01 01:04:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-01 01:04:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-01 01:04:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-01 01:04:31,185 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2018-10-01 01:04:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:31,185 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-01 01:04:31,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 01:04:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-01 01:04:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 01:04:31,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:31,186 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1] [2018-10-01 01:04:31,186 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:31,186 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:31,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times [2018-10-01 01:04:31,187 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:31,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:31,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:31,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:31,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:31,617 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 01:04:31,618 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:31,618 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 01:04:31,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:31,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:32,393 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 01:04:32,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:32,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 112 [2018-10-01 01:04:32,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 01:04:32,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 01:04:32,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:32,414 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 114 states. [2018-10-01 01:04:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:33,079 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 01:04:33,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 01:04:33,079 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 113 [2018-10-01 01:04:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:33,080 INFO L225 Difference]: With dead ends: 117 [2018-10-01 01:04:33,080 INFO L226 Difference]: Without dead ends: 116 [2018-10-01 01:04:33,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:04:33,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-01 01:04:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-01 01:04:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-01 01:04:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-01 01:04:33,086 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2018-10-01 01:04:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:33,087 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-01 01:04:33,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 01:04:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-01 01:04:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-01 01:04:33,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:33,088 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1] [2018-10-01 01:04:33,088 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:33,088 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:33,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times [2018-10-01 01:04:33,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:33,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:33,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:33,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:33,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:33,761 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 01:04:33,761 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:33,761 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:33,768 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:33,796 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:33,796 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:33,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:34,569 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 01:04:34,588 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:34,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 114 [2018-10-01 01:04:34,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 01:04:34,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 01:04:34,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:34,591 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 116 states. [2018-10-01 01:04:35,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:35,540 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-01 01:04:35,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 01:04:35,540 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 115 [2018-10-01 01:04:35,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:35,541 INFO L225 Difference]: With dead ends: 119 [2018-10-01 01:04:35,541 INFO L226 Difference]: Without dead ends: 118 [2018-10-01 01:04:35,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:04:35,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-01 01:04:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-01 01:04:35,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-01 01:04:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-01 01:04:35,545 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2018-10-01 01:04:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:35,545 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-01 01:04:35,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 01:04:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-01 01:04:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-01 01:04:35,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:35,546 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1] [2018-10-01 01:04:35,546 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:35,546 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:35,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times [2018-10-01 01:04:35,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:35,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:35,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:35,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:35,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:36,028 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 01:04:36,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:36,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:36,036 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:36,097 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-01 01:04:36,097 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:36,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:36,926 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 01:04:36,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:36,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 116 [2018-10-01 01:04:36,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 01:04:36,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 01:04:36,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:36,948 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 118 states. [2018-10-01 01:04:37,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:37,731 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 01:04:37,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 01:04:37,731 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 117 [2018-10-01 01:04:37,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:37,732 INFO L225 Difference]: With dead ends: 121 [2018-10-01 01:04:37,732 INFO L226 Difference]: Without dead ends: 120 [2018-10-01 01:04:37,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:04:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-01 01:04:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-01 01:04:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-01 01:04:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-01 01:04:37,736 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2018-10-01 01:04:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:37,736 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-01 01:04:37,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 01:04:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-01 01:04:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-01 01:04:37,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:37,737 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1] [2018-10-01 01:04:37,737 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:37,737 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:37,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times [2018-10-01 01:04:37,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:37,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:37,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:37,738 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:37,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:38,118 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 01:04:38,118 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:38,118 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 01:04:38,128 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:38,155 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:38,156 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:38,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:39,336 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 01:04:39,357 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:39,357 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 118 [2018-10-01 01:04:39,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 01:04:39,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 01:04:39,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:39,359 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 120 states. [2018-10-01 01:04:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:40,091 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-01 01:04:40,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 01:04:40,092 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 119 [2018-10-01 01:04:40,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:40,093 INFO L225 Difference]: With dead ends: 123 [2018-10-01 01:04:40,093 INFO L226 Difference]: Without dead ends: 122 [2018-10-01 01:04:40,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:04:40,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-01 01:04:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-01 01:04:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-01 01:04:40,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-01 01:04:40,097 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2018-10-01 01:04:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:40,097 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-01 01:04:40,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 01:04:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-01 01:04:40,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-01 01:04:40,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:40,098 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1] [2018-10-01 01:04:40,098 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:40,099 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:40,099 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times [2018-10-01 01:04:40,099 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:40,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:40,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:40,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:40,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:40,520 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 01:04:40,520 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:40,520 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 01:04:40,531 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:40,596 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-01 01:04:40,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:40,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:41,501 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 01:04:41,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:41,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 120 [2018-10-01 01:04:41,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 01:04:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 01:04:41,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:41,523 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 122 states. [2018-10-01 01:04:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:42,565 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 01:04:42,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 01:04:42,565 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 121 [2018-10-01 01:04:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:42,566 INFO L225 Difference]: With dead ends: 125 [2018-10-01 01:04:42,566 INFO L226 Difference]: Without dead ends: 124 [2018-10-01 01:04:42,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:04:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-01 01:04:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-01 01:04:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-01 01:04:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-01 01:04:42,569 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2018-10-01 01:04:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:42,569 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-01 01:04:42,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 01:04:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-01 01:04:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-01 01:04:42,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:42,570 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1] [2018-10-01 01:04:42,571 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:42,571 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:42,571 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times [2018-10-01 01:04:42,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:42,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:42,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:42,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:42,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:43,063 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 01:04:43,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:43,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:43,071 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:43,133 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 01:04:43,134 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:43,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:44,078 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 01:04:44,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:44,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 122 [2018-10-01 01:04:44,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 01:04:44,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 01:04:44,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:44,099 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 124 states. [2018-10-01 01:04:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:45,111 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-01 01:04:45,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 01:04:45,111 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 123 [2018-10-01 01:04:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:45,112 INFO L225 Difference]: With dead ends: 127 [2018-10-01 01:04:45,112 INFO L226 Difference]: Without dead ends: 126 [2018-10-01 01:04:45,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:04:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-01 01:04:45,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-01 01:04:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-01 01:04:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-01 01:04:45,118 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2018-10-01 01:04:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:45,118 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-01 01:04:45,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 01:04:45,118 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-01 01:04:45,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-01 01:04:45,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:45,119 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1] [2018-10-01 01:04:45,119 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:45,119 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:45,119 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times [2018-10-01 01:04:45,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:45,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:45,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:45,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:45,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:46,548 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 01:04:46,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:46,548 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 01:04:46,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:46,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:47,480 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 01:04:47,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:47,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 124 [2018-10-01 01:04:47,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 01:04:47,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 01:04:47,501 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:47,501 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 126 states. [2018-10-01 01:04:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:48,426 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 01:04:48,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 01:04:48,426 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 125 [2018-10-01 01:04:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:48,427 INFO L225 Difference]: With dead ends: 129 [2018-10-01 01:04:48,427 INFO L226 Difference]: Without dead ends: 128 [2018-10-01 01:04:48,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:04:48,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-01 01:04:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-01 01:04:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-01 01:04:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-10-01 01:04:48,430 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2018-10-01 01:04:48,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:48,431 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-10-01 01:04:48,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 01:04:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-10-01 01:04:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-01 01:04:48,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:48,431 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1] [2018-10-01 01:04:48,432 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:48,432 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:48,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times [2018-10-01 01:04:48,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:48,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:48,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:48,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:48,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:49,692 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 01:04:49,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:49,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:49,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:49,736 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:49,736 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:49,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:50,692 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 01:04:50,713 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:50,713 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 126 [2018-10-01 01:04:50,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 01:04:50,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 01:04:50,715 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:50,715 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 128 states. [2018-10-01 01:04:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:51,617 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-01 01:04:51,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 01:04:51,617 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 127 [2018-10-01 01:04:51,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:51,618 INFO L225 Difference]: With dead ends: 131 [2018-10-01 01:04:51,618 INFO L226 Difference]: Without dead ends: 130 [2018-10-01 01:04:51,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:04:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-01 01:04:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-01 01:04:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-01 01:04:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-01 01:04:51,621 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2018-10-01 01:04:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:51,622 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-01 01:04:51,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 01:04:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-01 01:04:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-01 01:04:51,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:51,622 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1] [2018-10-01 01:04:51,622 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:51,623 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:51,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times [2018-10-01 01:04:51,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:51,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:51,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:51,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:51,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:52,029 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 01:04:52,030 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:52,030 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 01:04:52,041 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:52,109 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-01 01:04:52,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:52,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:52,991 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 01:04:53,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:53,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 128 [2018-10-01 01:04:53,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 01:04:53,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 01:04:53,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:53,013 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 130 states. [2018-10-01 01:04:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:53,924 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 01:04:53,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 01:04:53,925 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 129 [2018-10-01 01:04:53,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:53,925 INFO L225 Difference]: With dead ends: 133 [2018-10-01 01:04:53,925 INFO L226 Difference]: Without dead ends: 132 [2018-10-01 01:04:53,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:04:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-01 01:04:53,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-10-01 01:04:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-01 01:04:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-01 01:04:53,929 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2018-10-01 01:04:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:53,929 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-01 01:04:53,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 01:04:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-01 01:04:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-01 01:04:53,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:53,930 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1] [2018-10-01 01:04:53,930 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:53,931 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times [2018-10-01 01:04:53,931 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:53,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:53,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:53,932 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:53,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:54,513 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 01:04:54,513 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:54,513 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:54,523 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:54,559 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:54,560 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:54,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:55,484 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 01:04:55,504 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:55,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 130 [2018-10-01 01:04:55,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 01:04:55,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 01:04:55,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:55,506 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 132 states. [2018-10-01 01:04:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:56,477 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-01 01:04:56,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 01:04:56,477 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 131 [2018-10-01 01:04:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:56,478 INFO L225 Difference]: With dead ends: 135 [2018-10-01 01:04:56,478 INFO L226 Difference]: Without dead ends: 134 [2018-10-01 01:04:56,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:04:56,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-01 01:04:56,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-10-01 01:04:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-01 01:04:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-10-01 01:04:56,481 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2018-10-01 01:04:56,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:56,481 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-10-01 01:04:56,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 01:04:56,482 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-10-01 01:04:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-01 01:04:56,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:56,483 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1] [2018-10-01 01:04:56,483 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:56,483 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:56,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times [2018-10-01 01:04:56,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:56,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:56,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:56,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:56,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:57,137 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 01:04:57,137 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:57,137 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:04:57,144 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:57,216 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-01 01:04:57,216 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:57,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:59,486 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 01:04:59,506 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:59,506 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 132 [2018-10-01 01:04:59,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 01:04:59,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 01:04:59,508 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:59,508 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 134 states. [2018-10-01 01:05:00,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:00,569 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 01:05:00,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 01:05:00,570 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 133 [2018-10-01 01:05:00,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:00,571 INFO L225 Difference]: With dead ends: 137 [2018-10-01 01:05:00,571 INFO L226 Difference]: Without dead ends: 136 [2018-10-01 01:05:00,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:05:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-01 01:05:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-01 01:05:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-01 01:05:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-01 01:05:00,575 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2018-10-01 01:05:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:00,576 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-01 01:05:00,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 01:05:00,576 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-01 01:05:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-01 01:05:00,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:00,577 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1] [2018-10-01 01:05:00,577 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:00,577 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:00,577 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times [2018-10-01 01:05:00,577 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:00,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:00,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:00,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:00,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:01,005 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 01:05:01,005 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:01,005 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 01:05:01,013 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:01,080 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 01:05:01,080 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:01,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:02,312 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 01:05:02,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:02,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 134 [2018-10-01 01:05:02,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 01:05:02,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 01:05:02,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:02,334 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 136 states. [2018-10-01 01:05:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:03,477 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-01 01:05:03,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 01:05:03,478 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 135 [2018-10-01 01:05:03,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:03,478 INFO L225 Difference]: With dead ends: 139 [2018-10-01 01:05:03,478 INFO L226 Difference]: Without dead ends: 138 [2018-10-01 01:05:03,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:05:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-01 01:05:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-10-01 01:05:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-01 01:05:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-10-01 01:05:03,482 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2018-10-01 01:05:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:03,482 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-10-01 01:05:03,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 01:05:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-10-01 01:05:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 01:05:03,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:03,483 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1] [2018-10-01 01:05:03,483 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:03,483 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:03,483 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times [2018-10-01 01:05:03,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:03,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:03,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:03,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:03,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:04,003 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 01:05:04,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:04,003 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 01:05:04,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:04,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:05,182 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 01:05:05,203 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:05,203 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 136 [2018-10-01 01:05:05,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 01:05:05,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 01:05:05,205 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:05,205 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 138 states. [2018-10-01 01:05:06,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:06,175 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 01:05:06,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 01:05:06,176 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 137 [2018-10-01 01:05:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:06,176 INFO L225 Difference]: With dead ends: 141 [2018-10-01 01:05:06,176 INFO L226 Difference]: Without dead ends: 140 [2018-10-01 01:05:06,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:05:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-01 01:05:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-01 01:05:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-01 01:05:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-10-01 01:05:06,181 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2018-10-01 01:05:06,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:06,181 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-10-01 01:05:06,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 01:05:06,181 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-10-01 01:05:06,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-01 01:05:06,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:06,182 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1] [2018-10-01 01:05:06,182 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:06,182 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:06,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times [2018-10-01 01:05:06,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:06,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:06,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:06,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:06,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:06,625 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 01:05:06,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:06,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:05:06,634 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:06,673 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:06,673 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:06,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:07,681 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 01:05:07,700 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:07,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 138 [2018-10-01 01:05:07,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 01:05:07,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 01:05:07,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:07,702 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 140 states. [2018-10-01 01:05:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:08,684 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-01 01:05:08,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 01:05:08,685 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 139 [2018-10-01 01:05:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:08,686 INFO L225 Difference]: With dead ends: 143 [2018-10-01 01:05:08,686 INFO L226 Difference]: Without dead ends: 142 [2018-10-01 01:05:08,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:05:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-01 01:05:08,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-01 01:05:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-01 01:05:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-01 01:05:08,689 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2018-10-01 01:05:08,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:08,689 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-01 01:05:08,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 01:05:08,689 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-01 01:05:08,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-01 01:05:08,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:08,690 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1] [2018-10-01 01:05:08,691 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:08,691 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:08,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times [2018-10-01 01:05:08,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:08,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:08,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:08,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:08,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:09,129 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 01:05:09,129 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:09,129 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 01:05:09,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:09,213 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-01 01:05:09,214 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:09,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:10,416 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 01:05:10,437 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:10,438 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 140 [2018-10-01 01:05:10,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 01:05:10,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 01:05:10,440 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:10,440 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 142 states. [2018-10-01 01:05:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:11,562 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 01:05:11,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 01:05:11,562 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 141 [2018-10-01 01:05:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:11,563 INFO L225 Difference]: With dead ends: 145 [2018-10-01 01:05:11,563 INFO L226 Difference]: Without dead ends: 144 [2018-10-01 01:05:11,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:05:11,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-01 01:05:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-10-01 01:05:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-01 01:05:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-10-01 01:05:11,568 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2018-10-01 01:05:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:11,568 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-10-01 01:05:11,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 01:05:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-10-01 01:05:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 01:05:11,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:11,569 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1] [2018-10-01 01:05:11,569 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:11,569 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:11,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times [2018-10-01 01:05:11,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:11,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:11,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:11,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:11,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:12,083 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 01:05:12,083 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:12,083 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:05:12,091 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:12,130 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:12,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:12,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:13,139 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 01:05:13,160 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:13,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 142 [2018-10-01 01:05:13,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 01:05:13,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 01:05:13,162 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:13,162 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 144 states. [2018-10-01 01:05:14,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:14,145 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-01 01:05:14,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 01:05:14,145 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 143 [2018-10-01 01:05:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:14,146 INFO L225 Difference]: With dead ends: 147 [2018-10-01 01:05:14,146 INFO L226 Difference]: Without dead ends: 146 [2018-10-01 01:05:14,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:05:14,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-01 01:05:14,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-01 01:05:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-01 01:05:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-01 01:05:14,150 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2018-10-01 01:05:14,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:14,151 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-01 01:05:14,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 01:05:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-01 01:05:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-01 01:05:14,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:14,151 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1] [2018-10-01 01:05:14,152 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:14,152 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:14,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times [2018-10-01 01:05:14,152 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:14,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:14,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:14,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:14,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:14,780 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 01:05:14,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:14,780 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:05:14,787 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:14,986 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-01 01:05:14,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:14,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:16,364 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 01:05:16,385 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:16,385 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 144 [2018-10-01 01:05:16,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 01:05:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 01:05:16,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:16,388 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 146 states. [2018-10-01 01:05:17,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:17,532 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 01:05:17,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 01:05:17,532 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 145 [2018-10-01 01:05:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:17,533 INFO L225 Difference]: With dead ends: 149 [2018-10-01 01:05:17,533 INFO L226 Difference]: Without dead ends: 148 [2018-10-01 01:05:17,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:05:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-01 01:05:17,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-01 01:05:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-01 01:05:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-01 01:05:17,538 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2018-10-01 01:05:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:17,538 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-01 01:05:17,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 01:05:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-01 01:05:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-01 01:05:17,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:17,539 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1] [2018-10-01 01:05:17,540 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:17,540 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:17,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times [2018-10-01 01:05:17,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:17,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:17,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:17,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:17,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:18,470 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 01:05:18,471 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:18,471 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:05:18,477 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:18,568 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 01:05:18,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:18,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:20,015 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 01:05:20,035 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:20,035 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 146 [2018-10-01 01:05:20,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 01:05:20,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 01:05:20,038 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:20,038 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 148 states. [2018-10-01 01:05:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:21,038 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-01 01:05:21,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 01:05:21,039 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 147 [2018-10-01 01:05:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:21,040 INFO L225 Difference]: With dead ends: 151 [2018-10-01 01:05:21,040 INFO L226 Difference]: Without dead ends: 150 [2018-10-01 01:05:21,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:05:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-01 01:05:21,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-01 01:05:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-01 01:05:21,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-01 01:05:21,045 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2018-10-01 01:05:21,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:21,045 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-01 01:05:21,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 01:05:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-01 01:05:21,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-01 01:05:21,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:21,046 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1] [2018-10-01 01:05:21,046 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:21,046 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:21,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times [2018-10-01 01:05:21,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:21,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:21,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:21,048 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:21,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:21,534 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 01:05:21,534 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:21,534 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:05:21,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:21,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:22,644 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 01:05:22,665 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:22,665 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 148 [2018-10-01 01:05:22,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 01:05:22,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 01:05:22,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:22,668 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 150 states. [2018-10-01 01:05:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:23,939 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 01:05:23,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 01:05:23,939 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 149 [2018-10-01 01:05:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:23,940 INFO L225 Difference]: With dead ends: 153 [2018-10-01 01:05:23,940 INFO L226 Difference]: Without dead ends: 152 [2018-10-01 01:05:23,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:05:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-01 01:05:23,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-10-01 01:05:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-01 01:05:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-10-01 01:05:23,945 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2018-10-01 01:05:23,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:23,945 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-10-01 01:05:23,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 01:05:23,945 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-10-01 01:05:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-01 01:05:23,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:23,946 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1] [2018-10-01 01:05:23,946 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:23,946 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:23,947 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times [2018-10-01 01:05:23,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:23,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:23,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:23,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:23,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:24,466 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 01:05:24,466 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:24,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:05:24,473 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:24,511 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:24,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:24,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:25,850 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 01:05:25,870 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:25,870 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 150 [2018-10-01 01:05:25,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 01:05:25,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 01:05:25,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:25,873 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 152 states. [2018-10-01 01:05:26,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:26,982 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-01 01:05:26,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 01:05:26,982 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 151 [2018-10-01 01:05:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:26,983 INFO L225 Difference]: With dead ends: 155 [2018-10-01 01:05:26,983 INFO L226 Difference]: Without dead ends: 154 [2018-10-01 01:05:26,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:05:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-01 01:05:26,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-01 01:05:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-01 01:05:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-01 01:05:26,987 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2018-10-01 01:05:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:26,987 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-01 01:05:26,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 01:05:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-01 01:05:26,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-01 01:05:26,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:26,988 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1] [2018-10-01 01:05:26,988 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:26,988 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:26,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times [2018-10-01 01:05:26,988 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:26,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:26,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:26,989 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:26,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:27,470 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 01:05:27,470 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:27,470 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 01:05:27,477 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:27,564 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-01 01:05:27,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:27,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:28,660 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 01:05:28,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:28,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 152 [2018-10-01 01:05:28,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 01:05:28,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 01:05:28,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:28,684 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 154 states. [2018-10-01 01:05:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:29,723 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 01:05:29,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 01:05:29,723 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 153 [2018-10-01 01:05:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:29,724 INFO L225 Difference]: With dead ends: 157 [2018-10-01 01:05:29,724 INFO L226 Difference]: Without dead ends: 156 [2018-10-01 01:05:29,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:05:29,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-01 01:05:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-01 01:05:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-01 01:05:29,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-01 01:05:29,728 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2018-10-01 01:05:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:29,728 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-01 01:05:29,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 01:05:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-01 01:05:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-01 01:05:29,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:29,729 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1] [2018-10-01 01:05:29,729 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:29,729 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:29,729 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times [2018-10-01 01:05:29,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:29,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:29,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:29,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:29,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:30,376 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 01:05:30,376 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:30,376 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 01:05:30,383 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:30,429 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:30,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:30,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:31,557 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 01:05:31,577 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:31,577 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 154 [2018-10-01 01:05:31,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 01:05:31,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 01:05:31,579 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:31,580 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 156 states. [2018-10-01 01:05:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:32,718 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-01 01:05:32,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 01:05:32,719 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 155 [2018-10-01 01:05:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:32,719 INFO L225 Difference]: With dead ends: 159 [2018-10-01 01:05:32,719 INFO L226 Difference]: Without dead ends: 158 [2018-10-01 01:05:32,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:05:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-01 01:05:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-01 01:05:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-01 01:05:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-01 01:05:32,723 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2018-10-01 01:05:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:32,723 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-01 01:05:32,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 01:05:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-01 01:05:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-01 01:05:32,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:32,724 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1] [2018-10-01 01:05:32,724 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:32,724 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:32,725 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times [2018-10-01 01:05:32,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:32,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:32,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:32,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:32,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:33,214 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 01:05:33,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:33,215 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 01:05:33,222 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:33,314 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-01 01:05:33,314 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:33,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:34,503 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 01:05:34,524 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:34,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 156 [2018-10-01 01:05:34,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-01 01:05:34,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-01 01:05:34,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:34,527 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 158 states. [2018-10-01 01:05:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:36,117 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 01:05:36,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 01:05:36,117 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 157 [2018-10-01 01:05:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:36,118 INFO L225 Difference]: With dead ends: 161 [2018-10-01 01:05:36,118 INFO L226 Difference]: Without dead ends: 160 [2018-10-01 01:05:36,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:05:36,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-01 01:05:36,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-01 01:05:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-01 01:05:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-01 01:05:36,123 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2018-10-01 01:05:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:36,124 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-01 01:05:36,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-01 01:05:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-01 01:05:36,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-01 01:05:36,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:36,125 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1] [2018-10-01 01:05:36,125 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:36,125 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times [2018-10-01 01:05:36,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:36,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:36,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:36,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:36,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:36,631 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 01:05:36,631 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:36,631 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:05:36,638 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:36,764 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 01:05:36,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:36,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:37,962 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 01:05:37,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:37,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 158 [2018-10-01 01:05:37,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 01:05:37,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 01:05:37,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:37,986 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 160 states. [2018-10-01 01:05:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:39,358 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-01 01:05:39,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 01:05:39,358 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 159 [2018-10-01 01:05:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:39,359 INFO L225 Difference]: With dead ends: 163 [2018-10-01 01:05:39,359 INFO L226 Difference]: Without dead ends: 162 [2018-10-01 01:05:39,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:05:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-01 01:05:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-10-01 01:05:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-01 01:05:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-10-01 01:05:39,364 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2018-10-01 01:05:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:39,364 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-10-01 01:05:39,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 01:05:39,364 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-10-01 01:05:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-01 01:05:39,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:39,365 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1] [2018-10-01 01:05:39,365 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:39,365 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:39,365 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times [2018-10-01 01:05:39,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:39,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:39,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:39,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:39,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:39,894 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 01:05:39,895 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:39,895 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 01:05:39,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:39,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:41,295 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 01:05:41,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:41,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 160 [2018-10-01 01:05:41,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-01 01:05:41,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-01 01:05:41,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:41,317 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 162 states. [2018-10-01 01:05:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:42,696 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 01:05:42,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 01:05:42,696 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 161 [2018-10-01 01:05:42,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:42,697 INFO L225 Difference]: With dead ends: 165 [2018-10-01 01:05:42,697 INFO L226 Difference]: Without dead ends: 164 [2018-10-01 01:05:42,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:05:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-01 01:05:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-01 01:05:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-01 01:05:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-10-01 01:05:42,703 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2018-10-01 01:05:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:42,703 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-10-01 01:05:42,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-01 01:05:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-10-01 01:05:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-01 01:05:42,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:42,705 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1] [2018-10-01 01:05:42,705 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:42,705 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times [2018-10-01 01:05:42,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:42,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:42,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:42,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:42,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:43,284 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 01:05:43,285 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:43,285 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:43,293 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:43,333 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:43,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:43,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:44,542 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 01:05:44,562 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:44,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 162 [2018-10-01 01:05:44,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 01:05:44,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 01:05:44,565 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:44,565 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 164 states. [2018-10-01 01:05:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:46,181 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-01 01:05:46,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 01:05:46,181 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 163 [2018-10-01 01:05:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:46,182 INFO L225 Difference]: With dead ends: 167 [2018-10-01 01:05:46,182 INFO L226 Difference]: Without dead ends: 166 [2018-10-01 01:05:46,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:05:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-01 01:05:46,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-01 01:05:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-01 01:05:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-01 01:05:46,186 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2018-10-01 01:05:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:46,186 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-01 01:05:46,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 01:05:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-01 01:05:46,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-01 01:05:46,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:46,187 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1] [2018-10-01 01:05:46,187 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:46,187 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:46,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times [2018-10-01 01:05:46,187 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:46,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:46,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:46,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:46,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:46,712 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 01:05:46,712 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:46,712 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 01:05:46,720 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:46,817 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-01 01:05:46,817 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:46,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:48,033 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 01:05:48,053 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:48,053 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 164 [2018-10-01 01:05:48,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-01 01:05:48,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-01 01:05:48,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:48,056 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 166 states. [2018-10-01 01:05:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:49,350 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 01:05:49,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 01:05:49,351 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 165 [2018-10-01 01:05:49,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:49,351 INFO L225 Difference]: With dead ends: 169 [2018-10-01 01:05:49,352 INFO L226 Difference]: Without dead ends: 168 [2018-10-01 01:05:49,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:05:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-01 01:05:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-10-01 01:05:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-01 01:05:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-10-01 01:05:49,355 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2018-10-01 01:05:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:49,356 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-10-01 01:05:49,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-01 01:05:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-10-01 01:05:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-01 01:05:49,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:49,356 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1] [2018-10-01 01:05:49,357 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:49,357 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:49,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times [2018-10-01 01:05:49,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:49,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:49,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:49,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:49,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:49,904 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 01:05:49,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:49,904 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:05:49,912 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:49,962 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:49,962 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:49,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:51,395 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 01:05:51,415 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:51,416 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 166 [2018-10-01 01:05:51,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 01:05:51,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 01:05:51,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:51,418 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 168 states. [2018-10-01 01:05:52,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:52,626 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-01 01:05:52,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 01:05:52,627 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 167 [2018-10-01 01:05:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:52,627 INFO L225 Difference]: With dead ends: 171 [2018-10-01 01:05:52,627 INFO L226 Difference]: Without dead ends: 170 [2018-10-01 01:05:52,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:05:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-01 01:05:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-10-01 01:05:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-01 01:05:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-10-01 01:05:52,631 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2018-10-01 01:05:52,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:52,632 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-10-01 01:05:52,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 01:05:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-10-01 01:05:52,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-01 01:05:52,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:52,632 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1] [2018-10-01 01:05:52,632 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:52,633 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:52,633 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times [2018-10-01 01:05:52,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:52,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:52,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:52,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:52,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:53,180 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 01:05:53,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:53,181 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 01:05:53,187 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:53,307 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-01 01:05:53,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:53,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:54,607 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 01:05:54,628 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:54,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 168 [2018-10-01 01:05:54,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-10-01 01:05:54,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-10-01 01:05:54,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:54,631 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 170 states. [2018-10-01 01:05:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:55,996 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 01:05:55,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 01:05:55,996 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 169 [2018-10-01 01:05:55,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:55,997 INFO L225 Difference]: With dead ends: 173 [2018-10-01 01:05:55,997 INFO L226 Difference]: Without dead ends: 172 [2018-10-01 01:05:55,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:05:55,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-01 01:05:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-10-01 01:05:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-01 01:05:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-01 01:05:56,001 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2018-10-01 01:05:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:56,001 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-01 01:05:56,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-10-01 01:05:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-01 01:05:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-01 01:05:56,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:56,002 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1] [2018-10-01 01:05:56,002 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:56,002 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:56,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1887452040, now seen corresponding path program 84 times [2018-10-01 01:05:56,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:56,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:56,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:56,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:56,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:56,647 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 01:05:56,647 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:56,647 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 01:05:56,656 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:56,760 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 01:05:56,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:56,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:58,049 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 01:05:58,069 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:58,070 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 170 [2018-10-01 01:05:58,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 01:05:58,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 01:05:58,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:58,073 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 172 states. [2018-10-01 01:05:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:59,556 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-01 01:05:59,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 01:05:59,556 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 171 [2018-10-01 01:05:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:59,557 INFO L225 Difference]: With dead ends: 175 [2018-10-01 01:05:59,557 INFO L226 Difference]: Without dead ends: 174 [2018-10-01 01:05:59,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:05:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-01 01:05:59,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-10-01 01:05:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-01 01:05:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-01 01:05:59,562 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2018-10-01 01:05:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:59,563 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-01 01:05:59,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 01:05:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-01 01:05:59,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 01:05:59,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:59,564 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1] [2018-10-01 01:05:59,564 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:59,564 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:59,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1365212618, now seen corresponding path program 85 times [2018-10-01 01:05:59,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:59,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:59,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:59,565 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:59,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:00,139 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 01:06:00,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:00,139 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 01:06:00,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:00,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:01,740 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 01:06:01,761 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:01,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 172 [2018-10-01 01:06:01,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-10-01 01:06:01,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-10-01 01:06:01,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:01,764 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 174 states. [2018-10-01 01:06:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:03,077 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 01:06:03,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 01:06:03,077 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 173 [2018-10-01 01:06:03,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:03,078 INFO L225 Difference]: With dead ends: 177 [2018-10-01 01:06:03,078 INFO L226 Difference]: Without dead ends: 176 [2018-10-01 01:06:03,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:06:03,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-01 01:06:03,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-01 01:06:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-01 01:06:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-10-01 01:06:03,084 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2018-10-01 01:06:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:03,085 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-10-01 01:06:03,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-10-01 01:06:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-10-01 01:06:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-01 01:06:03,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:03,086 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1] [2018-10-01 01:06:03,086 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:03,086 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:03,086 INFO L82 PathProgramCache]: Analyzing trace with hash 2004301708, now seen corresponding path program 86 times [2018-10-01 01:06:03,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:03,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:03,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:03,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:03,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:03,693 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 01:06:03,694 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:03,694 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:06:03,700 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:06:03,746 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:06:03,747 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:03,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:05,119 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 01:06:05,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:05,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 174 [2018-10-01 01:06:05,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 01:06:05,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 01:06:05,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:05,143 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 176 states. [2018-10-01 01:06:06,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:06,668 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-01 01:06:06,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 01:06:06,668 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 175 [2018-10-01 01:06:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:06,669 INFO L225 Difference]: With dead ends: 179 [2018-10-01 01:06:06,669 INFO L226 Difference]: Without dead ends: 178 [2018-10-01 01:06:06,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:06:06,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-01 01:06:06,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-01 01:06:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-01 01:06:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-01 01:06:06,673 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2018-10-01 01:06:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:06,673 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-01 01:06:06,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 01:06:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-01 01:06:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-01 01:06:06,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:06,674 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1] [2018-10-01 01:06:06,674 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:06,674 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1988593870, now seen corresponding path program 87 times [2018-10-01 01:06:06,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:06,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:06,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:06,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:06,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:07,502 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 01:06:07,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:07,503 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 01:06:07,510 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:06:07,621 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-01 01:06:07,621 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:07,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:09,008 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 01:06:09,030 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:09,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 176 [2018-10-01 01:06:09,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-10-01 01:06:09,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-10-01 01:06:09,034 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:09,034 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 178 states. [2018-10-01 01:06:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:10,417 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 01:06:10,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 01:06:10,417 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 177 [2018-10-01 01:06:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:10,418 INFO L225 Difference]: With dead ends: 181 [2018-10-01 01:06:10,418 INFO L226 Difference]: Without dead ends: 180 [2018-10-01 01:06:10,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:06:10,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-01 01:06:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-10-01 01:06:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-01 01:06:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-10-01 01:06:10,422 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2018-10-01 01:06:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:10,422 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-10-01 01:06:10,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-10-01 01:06:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-10-01 01:06:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-01 01:06:10,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:10,423 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1] [2018-10-01 01:06:10,423 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:10,423 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:10,423 INFO L82 PathProgramCache]: Analyzing trace with hash -221736560, now seen corresponding path program 88 times [2018-10-01 01:06:10,424 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:10,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:10,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:10,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:10,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:11,151 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 01:06:11,151 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:11,151 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 01:06:11,158 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:06:11,207 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:06:11,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:11,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:12,560 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 01:06:12,580 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:12,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 178 [2018-10-01 01:06:12,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 01:06:12,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 01:06:12,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:12,583 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 180 states. [2018-10-01 01:06:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:14,094 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-01 01:06:14,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 01:06:14,094 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 179 [2018-10-01 01:06:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:14,095 INFO L225 Difference]: With dead ends: 183 [2018-10-01 01:06:14,095 INFO L226 Difference]: Without dead ends: 182 [2018-10-01 01:06:14,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:06:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-01 01:06:14,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-10-01 01:06:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-01 01:06:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-10-01 01:06:14,099 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2018-10-01 01:06:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:14,099 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-10-01 01:06:14,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 01:06:14,099 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-10-01 01:06:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-01 01:06:14,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:14,100 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1] [2018-10-01 01:06:14,100 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:14,100 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:14,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1659531730, now seen corresponding path program 89 times [2018-10-01 01:06:14,100 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:14,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:14,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:14,101 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:14,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:14,692 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 01:06:14,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:14,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:06:14,702 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:06:14,819 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-01 01:06:14,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:14,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:16,347 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 01:06:16,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:16,369 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 180 [2018-10-01 01:06:16,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-10-01 01:06:16,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-10-01 01:06:16,372 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:16,372 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 182 states. [2018-10-01 01:06:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:17,688 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 01:06:17,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 01:06:17,688 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 181 [2018-10-01 01:06:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:17,689 INFO L225 Difference]: With dead ends: 185 [2018-10-01 01:06:17,689 INFO L226 Difference]: Without dead ends: 184 [2018-10-01 01:06:17,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:06:17,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-01 01:06:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-01 01:06:17,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-01 01:06:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-01 01:06:17,693 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2018-10-01 01:06:17,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:17,693 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-01 01:06:17,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-10-01 01:06:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-01 01:06:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-01 01:06:17,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:17,694 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1] [2018-10-01 01:06:17,694 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:17,695 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:17,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1377126804, now seen corresponding path program 90 times [2018-10-01 01:06:17,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:17,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:17,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:17,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:17,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:18,304 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 01:06:18,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:18,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:06:18,312 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:06:18,421 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 01:06:18,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:18,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:19,895 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 01:06:19,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:19,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 182 [2018-10-01 01:06:19,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 01:06:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 01:06:19,918 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:19,918 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 184 states. [2018-10-01 01:06:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:21,681 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-01 01:06:21,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 01:06:21,681 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 183 [2018-10-01 01:06:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:21,682 INFO L225 Difference]: With dead ends: 187 [2018-10-01 01:06:21,682 INFO L226 Difference]: Without dead ends: 186 [2018-10-01 01:06:21,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:06:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-01 01:06:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-01 01:06:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-01 01:06:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-10-01 01:06:21,688 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2018-10-01 01:06:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:21,688 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-10-01 01:06:21,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 01:06:21,688 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-10-01 01:06:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-01 01:06:21,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:21,689 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1] [2018-10-01 01:06:21,690 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:21,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:21,690 INFO L82 PathProgramCache]: Analyzing trace with hash 568932566, now seen corresponding path program 91 times [2018-10-01 01:06:21,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:21,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:21,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:21,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:21,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:22,463 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 01:06:22,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:22,463 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 01:06:22,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:22,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:23,929 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 01:06:23,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:23,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 184 [2018-10-01 01:06:23,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-10-01 01:06:23,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-10-01 01:06:23,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:23,953 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 186 states. [2018-10-01 01:06:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:25,419 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 01:06:25,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 01:06:25,419 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 185 [2018-10-01 01:06:25,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:25,420 INFO L225 Difference]: With dead ends: 189 [2018-10-01 01:06:25,420 INFO L226 Difference]: Without dead ends: 188 [2018-10-01 01:06:25,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:06:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-01 01:06:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-10-01 01:06:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-10-01 01:06:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-10-01 01:06:25,426 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2018-10-01 01:06:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:25,426 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-10-01 01:06:25,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-10-01 01:06:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-10-01 01:06:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-01 01:06:25,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:25,427 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1] [2018-10-01 01:06:25,427 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:25,427 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:25,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350424, now seen corresponding path program 92 times [2018-10-01 01:06:25,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:25,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:25,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:25,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:25,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:26,092 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 01:06:26,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:26,093 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 01:06:26,101 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:06:26,149 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:06:26,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:26,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:27,782 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 01:06:27,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:27,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 186 [2018-10-01 01:06:27,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 01:06:27,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 01:06:27,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:27,805 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 188 states. [2018-10-01 01:06:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:29,142 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-01 01:06:29,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 01:06:29,142 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 187 [2018-10-01 01:06:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:29,143 INFO L225 Difference]: With dead ends: 191 [2018-10-01 01:06:29,143 INFO L226 Difference]: Without dead ends: 190 [2018-10-01 01:06:29,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:06:29,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-01 01:06:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-10-01 01:06:29,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-01 01:06:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-10-01 01:06:29,149 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2018-10-01 01:06:29,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:29,150 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-10-01 01:06:29,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 01:06:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-10-01 01:06:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-01 01:06:29,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:29,151 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1] [2018-10-01 01:06:29,151 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:29,151 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:29,152 INFO L82 PathProgramCache]: Analyzing trace with hash 644144602, now seen corresponding path program 93 times [2018-10-01 01:06:29,152 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:29,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:29,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:29,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:29,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:29,976 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 01:06:29,977 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:29,977 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:06:29,985 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:06:30,101 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-01 01:06:30,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:30,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:31,700 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 01:06:31,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:31,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 188 [2018-10-01 01:06:31,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-10-01 01:06:31,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-10-01 01:06:31,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:31,723 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 190 states. [2018-10-01 01:06:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:33,124 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 01:06:33,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 01:06:33,124 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 189 [2018-10-01 01:06:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:33,125 INFO L225 Difference]: With dead ends: 193 [2018-10-01 01:06:33,125 INFO L226 Difference]: Without dead ends: 192 [2018-10-01 01:06:33,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:06:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-01 01:06:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-10-01 01:06:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-10-01 01:06:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-10-01 01:06:33,129 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2018-10-01 01:06:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:33,129 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-10-01 01:06:33,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-10-01 01:06:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-10-01 01:06:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-01 01:06:33,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:33,130 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1] [2018-10-01 01:06:33,131 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:33,131 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:33,131 INFO L82 PathProgramCache]: Analyzing trace with hash 547672988, now seen corresponding path program 94 times [2018-10-01 01:06:33,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:33,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:33,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:33,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:33,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:33,783 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 01:06:33,783 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:33,783 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 01:06:33,791 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:06:33,848 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:06:33,848 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:33,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:35,372 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 01:06:35,392 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:35,392 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 190 [2018-10-01 01:06:35,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 01:06:35,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 01:06:35,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:35,395 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 192 states. [2018-10-01 01:06:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:36,927 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-01 01:06:36,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 01:06:36,927 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 191 [2018-10-01 01:06:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:36,928 INFO L225 Difference]: With dead ends: 195 [2018-10-01 01:06:36,928 INFO L226 Difference]: Without dead ends: 194 [2018-10-01 01:06:36,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:06:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-01 01:06:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-10-01 01:06:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-01 01:06:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-10-01 01:06:36,932 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2018-10-01 01:06:36,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:36,932 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-10-01 01:06:36,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 01:06:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-10-01 01:06:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-01 01:06:36,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:36,933 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1] [2018-10-01 01:06:36,933 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:36,933 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:36,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234850, now seen corresponding path program 95 times [2018-10-01 01:06:36,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:36,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:36,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:36,934 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:36,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:37,594 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 01:06:37,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:37,595 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 01:06:37,604 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:06:37,733 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-01 01:06:37,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:37,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:39,438 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 01:06:39,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:39,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 192 [2018-10-01 01:06:39,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-10-01 01:06:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-10-01 01:06:39,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:39,462 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 194 states. [2018-10-01 01:06:40,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:40,936 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 01:06:40,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 01:06:40,937 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 193 [2018-10-01 01:06:40,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:40,938 INFO L225 Difference]: With dead ends: 197 [2018-10-01 01:06:40,938 INFO L226 Difference]: Without dead ends: 196 [2018-10-01 01:06:40,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:06:40,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-01 01:06:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-01 01:06:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-01 01:06:40,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-10-01 01:06:40,942 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2018-10-01 01:06:40,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:40,942 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-10-01 01:06:40,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-10-01 01:06:40,942 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-10-01 01:06:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-01 01:06:40,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:40,943 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1] [2018-10-01 01:06:40,943 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:40,943 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:40,943 INFO L82 PathProgramCache]: Analyzing trace with hash -727079520, now seen corresponding path program 96 times [2018-10-01 01:06:40,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:40,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:40,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:40,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:40,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:41,673 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 01:06:41,674 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:41,674 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 01:06:41,682 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:06:41,842 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 01:06:41,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:41,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:43,461 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 01:06:43,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:43,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 194 [2018-10-01 01:06:43,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 01:06:43,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 01:06:43,485 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:43,485 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 196 states. [2018-10-01 01:06:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:44,900 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-01 01:06:44,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 01:06:44,900 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 195 [2018-10-01 01:06:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:44,901 INFO L225 Difference]: With dead ends: 199 [2018-10-01 01:06:44,901 INFO L226 Difference]: Without dead ends: 198 [2018-10-01 01:06:44,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:06:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-01 01:06:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-10-01 01:06:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-01 01:06:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-01 01:06:44,907 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2018-10-01 01:06:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:44,907 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-01 01:06:44,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 01:06:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-01 01:06:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 01:06:44,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:44,908 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1] [2018-10-01 01:06:44,908 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:44,908 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:44,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1356251618, now seen corresponding path program 97 times [2018-10-01 01:06:44,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:44,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:44,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:44,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:44,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:45,595 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 01:06:45,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:45,595 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 01:06:45,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:45,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:47,394 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 01:06:47,415 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:47,416 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 196 [2018-10-01 01:06:47,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-10-01 01:06:47,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-10-01 01:06:47,419 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:47,419 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 198 states. [2018-10-01 01:06:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:48,824 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 01:06:48,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 01:06:48,824 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 197 [2018-10-01 01:06:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:48,825 INFO L225 Difference]: With dead ends: 201 [2018-10-01 01:06:48,825 INFO L226 Difference]: Without dead ends: 200 [2018-10-01 01:06:48,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:06:48,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-01 01:06:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-10-01 01:06:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-01 01:06:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-01 01:06:48,829 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2018-10-01 01:06:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:48,829 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-01 01:06:48,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-10-01 01:06:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-01 01:06:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-01 01:06:48,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:48,830 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1] [2018-10-01 01:06:48,830 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:48,831 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:48,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1982715300, now seen corresponding path program 98 times [2018-10-01 01:06:48,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:48,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:48,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:48,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:48,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:49,517 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 01:06:49,517 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:49,517 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 01:06:49,524 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:06:49,577 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:06:49,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:49,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:51,196 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 01:06:51,217 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:51,217 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 198 [2018-10-01 01:06:51,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 01:06:51,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 01:06:51,220 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:51,220 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 200 states. [2018-10-01 01:06:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:52,768 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-01 01:06:52,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 01:06:52,769 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 199 [2018-10-01 01:06:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:52,770 INFO L225 Difference]: With dead ends: 203 [2018-10-01 01:06:52,770 INFO L226 Difference]: Without dead ends: 202 [2018-10-01 01:06:52,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:06:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-01 01:06:52,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-10-01 01:06:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-01 01:06:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-01 01:06:52,774 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2018-10-01 01:06:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:52,774 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-01 01:06:52,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 01:06:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-01 01:06:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-01 01:06:52,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:52,775 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1] [2018-10-01 01:06:52,775 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:52,775 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1576075034, now seen corresponding path program 99 times [2018-10-01 01:06:52,775 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:52,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:52,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:52,776 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:52,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:53,477 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 01:06:53,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:53,477 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:06:53,484 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:06:53,627 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-01 01:06:53,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:53,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:55,209 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 01:06:55,231 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:55,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 200 [2018-10-01 01:06:55,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-10-01 01:06:55,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-10-01 01:06:55,235 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:55,235 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 202 states. [2018-10-01 01:06:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:56,767 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 01:06:56,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 01:06:56,767 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 201 [2018-10-01 01:06:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:56,768 INFO L225 Difference]: With dead ends: 205 [2018-10-01 01:06:56,768 INFO L226 Difference]: Without dead ends: 204 [2018-10-01 01:06:56,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:06:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-01 01:06:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-10-01 01:06:56,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-01 01:06:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-10-01 01:06:56,772 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2018-10-01 01:06:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:56,773 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-10-01 01:06:56,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-10-01 01:06:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-10-01 01:06:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 01:06:56,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:56,774 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1] [2018-10-01 01:06:56,774 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:56,774 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:56,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1515348904, now seen corresponding path program 100 times [2018-10-01 01:06:56,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:56,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:56,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:56,775 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:56,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:57,649 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 01:06:57,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:57,649 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 01:06:57,656 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:06:57,716 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:06:57,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:57,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:59,374 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 01:06:59,394 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:59,394 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 202 [2018-10-01 01:06:59,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 01:06:59,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 01:06:59,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:59,398 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 204 states. [2018-10-01 01:07:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:01,079 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-01 01:07:01,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 01:07:01,080 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 203 [2018-10-01 01:07:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:01,081 INFO L225 Difference]: With dead ends: 207 [2018-10-01 01:07:01,081 INFO L226 Difference]: Without dead ends: 206 [2018-10-01 01:07:01,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:07:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-01 01:07:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-01 01:07:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-01 01:07:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-10-01 01:07:01,086 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2018-10-01 01:07:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:01,087 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-10-01 01:07:01,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 01:07:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-10-01 01:07:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-01 01:07:01,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:01,088 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1] [2018-10-01 01:07:01,088 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:01,088 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:01,089 INFO L82 PathProgramCache]: Analyzing trace with hash 256384490, now seen corresponding path program 101 times [2018-10-01 01:07:01,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:01,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:01,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:01,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:01,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:01,804 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 01:07:01,804 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:01,804 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 01:07:01,811 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:07:02,100 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-01 01:07:02,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:02,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:03,948 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 01:07:03,968 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:03,968 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 204 [2018-10-01 01:07:03,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-10-01 01:07:03,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-10-01 01:07:03,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:03,972 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 206 states. [2018-10-01 01:07:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:05,833 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 01:07:05,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 01:07:05,833 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 205 [2018-10-01 01:07:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:05,834 INFO L225 Difference]: With dead ends: 209 [2018-10-01 01:07:05,834 INFO L226 Difference]: Without dead ends: 208 [2018-10-01 01:07:05,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:07:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-01 01:07:05,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-10-01 01:07:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-01 01:07:05,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-10-01 01:07:05,839 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2018-10-01 01:07:05,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:05,839 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-10-01 01:07:05,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-10-01 01:07:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-10-01 01:07:05,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-01 01:07:05,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:05,840 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1] [2018-10-01 01:07:05,841 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:05,841 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:05,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1572360108, now seen corresponding path program 102 times [2018-10-01 01:07:05,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:05,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:05,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:05,842 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:05,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:06,573 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 01:07:06,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:06,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:07:06,581 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:07:06,710 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 01:07:06,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:06,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:08,576 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 01:07:08,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:08,596 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 206 [2018-10-01 01:07:08,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 01:07:08,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 01:07:08,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:08,600 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 208 states. [2018-10-01 01:07:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:10,710 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-01 01:07:10,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 01:07:10,710 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 207 [2018-10-01 01:07:10,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:10,711 INFO L225 Difference]: With dead ends: 211 [2018-10-01 01:07:10,711 INFO L226 Difference]: Without dead ends: 210 [2018-10-01 01:07:10,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:07:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-01 01:07:10,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-10-01 01:07:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-01 01:07:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-01 01:07:10,716 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2018-10-01 01:07:10,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:10,717 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-01 01:07:10,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 01:07:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-01 01:07:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-01 01:07:10,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:10,718 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1] [2018-10-01 01:07:10,718 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:10,718 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:10,718 INFO L82 PathProgramCache]: Analyzing trace with hash -790423314, now seen corresponding path program 103 times [2018-10-01 01:07:10,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:10,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:10,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:10,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:10,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:11,470 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 01:07:11,470 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:11,470 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 01:07:11,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:11,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:13,428 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 01:07:13,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:13,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 208 [2018-10-01 01:07:13,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-10-01 01:07:13,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-10-01 01:07:13,452 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:13,453 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 210 states. [2018-10-01 01:07:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:15,000 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 01:07:15,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 01:07:15,001 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 209 [2018-10-01 01:07:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:15,001 INFO L225 Difference]: With dead ends: 213 [2018-10-01 01:07:15,001 INFO L226 Difference]: Without dead ends: 212 [2018-10-01 01:07:15,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:07:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-01 01:07:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-10-01 01:07:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-01 01:07:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-10-01 01:07:15,024 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2018-10-01 01:07:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:15,024 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-10-01 01:07:15,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-10-01 01:07:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-10-01 01:07:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-01 01:07:15,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:15,025 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1] [2018-10-01 01:07:15,025 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:15,025 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:15,026 INFO L82 PathProgramCache]: Analyzing trace with hash 612407728, now seen corresponding path program 104 times [2018-10-01 01:07:15,026 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:15,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:15,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:15,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:15,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:15,785 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 01:07:15,785 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:15,785 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:07:15,794 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:07:15,845 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:07:15,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:15,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:17,809 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 01:07:17,830 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:17,830 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 210 [2018-10-01 01:07:17,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-10-01 01:07:17,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-10-01 01:07:17,834 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:17,834 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 212 states. [2018-10-01 01:07:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:19,660 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-01 01:07:19,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 01:07:19,661 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 211 [2018-10-01 01:07:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:19,661 INFO L225 Difference]: With dead ends: 215 [2018-10-01 01:07:19,661 INFO L226 Difference]: Without dead ends: 214 [2018-10-01 01:07:19,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:07:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-01 01:07:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-10-01 01:07:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-01 01:07:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-10-01 01:07:19,667 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2018-10-01 01:07:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:19,667 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-10-01 01:07:19,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-10-01 01:07:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-10-01 01:07:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-01 01:07:19,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:19,669 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1] [2018-10-01 01:07:19,669 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:19,669 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:19,669 INFO L82 PathProgramCache]: Analyzing trace with hash 113308146, now seen corresponding path program 105 times [2018-10-01 01:07:19,669 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:19,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:19,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:19,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:19,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:20,469 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 01:07:20,469 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:20,470 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 01:07:20,477 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:07:20,624 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-01 01:07:20,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:20,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:22,500 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 01:07:22,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:22,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 212 [2018-10-01 01:07:22,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-10-01 01:07:22,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-10-01 01:07:22,524 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:22,525 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 214 states. [2018-10-01 01:07:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:24,666 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 01:07:24,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 01:07:24,667 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 213 [2018-10-01 01:07:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:24,667 INFO L225 Difference]: With dead ends: 217 [2018-10-01 01:07:24,667 INFO L226 Difference]: Without dead ends: 216 [2018-10-01 01:07:24,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:07:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-01 01:07:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-10-01 01:07:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-01 01:07:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-10-01 01:07:24,673 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2018-10-01 01:07:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:24,674 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-10-01 01:07:24,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-10-01 01:07:24,674 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-10-01 01:07:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-01 01:07:24,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:24,675 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1] [2018-10-01 01:07:24,675 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:24,675 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:24,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1514946996, now seen corresponding path program 106 times [2018-10-01 01:07:24,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:24,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:24,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:24,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:24,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:25,452 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 01:07:25,452 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:25,452 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:07:25,460 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:07:25,526 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:07:25,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:25,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:27,358 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 01:07:27,377 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:27,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 214 [2018-10-01 01:07:27,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-10-01 01:07:27,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-10-01 01:07:27,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:27,382 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 216 states. [2018-10-01 01:07:29,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:29,359 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-01 01:07:29,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 01:07:29,359 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 215 [2018-10-01 01:07:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:29,360 INFO L225 Difference]: With dead ends: 219 [2018-10-01 01:07:29,360 INFO L226 Difference]: Without dead ends: 218 [2018-10-01 01:07:29,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:07:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-01 01:07:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-10-01 01:07:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-10-01 01:07:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-10-01 01:07:29,364 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2018-10-01 01:07:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:29,364 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-10-01 01:07:29,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-10-01 01:07:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-10-01 01:07:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-01 01:07:29,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:29,365 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1] [2018-10-01 01:07:29,365 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:29,365 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:29,365 INFO L82 PathProgramCache]: Analyzing trace with hash -129849098, now seen corresponding path program 107 times [2018-10-01 01:07:29,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:29,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:29,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:29,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:29,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:30,135 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 01:07:30,135 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:30,135 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 01:07:30,143 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:07:30,326 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-01 01:07:30,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:30,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:32,226 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 01:07:32,247 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:32,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 216 [2018-10-01 01:07:32,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-10-01 01:07:32,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-10-01 01:07:32,251 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:32,251 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 218 states. [2018-10-01 01:07:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:34,208 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 01:07:34,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 01:07:34,208 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 217 [2018-10-01 01:07:34,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:34,208 INFO L225 Difference]: With dead ends: 221 [2018-10-01 01:07:34,209 INFO L226 Difference]: Without dead ends: 220 [2018-10-01 01:07:34,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:07:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-01 01:07:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-10-01 01:07:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-01 01:07:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-10-01 01:07:34,214 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2018-10-01 01:07:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:34,214 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-10-01 01:07:34,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-10-01 01:07:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-10-01 01:07:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-01 01:07:34,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:34,216 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 1, 1] [2018-10-01 01:07:34,216 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:34,216 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:34,216 INFO L82 PathProgramCache]: Analyzing trace with hash -230930504, now seen corresponding path program 108 times [2018-10-01 01:07:34,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:34,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:34,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:34,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:34,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:34,989 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 01:07:34,990 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:34,990 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:07:34,998 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:07:35,140 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 01:07:35,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:35,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:37,019 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 01:07:37,041 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:37,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 218 [2018-10-01 01:07:37,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-10-01 01:07:37,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-10-01 01:07:37,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:37,045 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 220 states. [2018-10-01 01:07:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:39,370 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-01 01:07:39,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 01:07:39,371 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 219 [2018-10-01 01:07:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:39,371 INFO L225 Difference]: With dead ends: 223 [2018-10-01 01:07:39,371 INFO L226 Difference]: Without dead ends: 222 [2018-10-01 01:07:39,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:07:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-01 01:07:39,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-10-01 01:07:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-10-01 01:07:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-10-01 01:07:39,377 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2018-10-01 01:07:39,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:39,377 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-10-01 01:07:39,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-10-01 01:07:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-10-01 01:07:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-01 01:07:39,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:39,378 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 1, 1] [2018-10-01 01:07:39,378 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:39,378 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:39,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1414086138, now seen corresponding path program 109 times [2018-10-01 01:07:39,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:39,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:39,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:39,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:39,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:40,202 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 01:07:40,203 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:40,203 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 01:07:40,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:40,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:42,225 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 01:07:42,246 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:42,246 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 220 [2018-10-01 01:07:42,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-10-01 01:07:42,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-10-01 01:07:42,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:42,250 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 222 states. [2018-10-01 01:07:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:44,088 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 01:07:44,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 01:07:44,088 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 221 [2018-10-01 01:07:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:44,089 INFO L225 Difference]: With dead ends: 225 [2018-10-01 01:07:44,089 INFO L226 Difference]: Without dead ends: 224 [2018-10-01 01:07:44,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:07:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-01 01:07:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-10-01 01:07:44,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-01 01:07:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-01 01:07:44,093 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2018-10-01 01:07:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:44,093 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-01 01:07:44,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-10-01 01:07:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-01 01:07:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-01 01:07:44,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:44,094 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 1, 1] [2018-10-01 01:07:44,094 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:44,094 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:44,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1727114172, now seen corresponding path program 110 times [2018-10-01 01:07:44,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:44,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:44,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:44,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:44,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:44,942 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 01:07:44,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:44,943 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 01:07:44,950 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:07:45,008 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:07:45,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:45,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:47,007 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 01:07:47,028 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:47,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 222 [2018-10-01 01:07:47,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-10-01 01:07:47,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-10-01 01:07:47,032 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:47,032 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 224 states. [2018-10-01 01:07:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:49,357 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-01 01:07:49,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 01:07:49,358 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 223 [2018-10-01 01:07:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:49,358 INFO L225 Difference]: With dead ends: 227 [2018-10-01 01:07:49,358 INFO L226 Difference]: Without dead ends: 226 [2018-10-01 01:07:49,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:07:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-01 01:07:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-01 01:07:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-01 01:07:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-01 01:07:49,362 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2018-10-01 01:07:49,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:49,362 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-01 01:07:49,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-10-01 01:07:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-01 01:07:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-01 01:07:49,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:49,363 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 1, 1] [2018-10-01 01:07:49,363 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:49,364 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:49,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1899344126, now seen corresponding path program 111 times [2018-10-01 01:07:49,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:49,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:49,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:49,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:49,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:50,161 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 01:07:50,161 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:50,161 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 01:07:50,168 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:07:50,331 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-10-01 01:07:50,331 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:50,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:52,293 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 01:07:52,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:52,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 224 [2018-10-01 01:07:52,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-10-01 01:07:52,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-10-01 01:07:52,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:52,318 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 226 states. [2018-10-01 01:07:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:54,173 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 01:07:54,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 01:07:54,173 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 225 [2018-10-01 01:07:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:54,174 INFO L225 Difference]: With dead ends: 229 [2018-10-01 01:07:54,174 INFO L226 Difference]: Without dead ends: 228 [2018-10-01 01:07:54,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:07:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-01 01:07:54,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-10-01 01:07:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-10-01 01:07:54,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-10-01 01:07:54,178 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2018-10-01 01:07:54,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:54,178 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-10-01 01:07:54,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-10-01 01:07:54,179 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-10-01 01:07:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 01:07:54,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:54,179 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 1, 1] [2018-10-01 01:07:54,179 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:54,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:54,180 INFO L82 PathProgramCache]: Analyzing trace with hash -91394624, now seen corresponding path program 112 times [2018-10-01 01:07:54,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:54,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:54,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:54,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:54,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:55,008 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 01:07:55,008 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:55,008 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:07:55,015 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:07:55,081 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:07:55,081 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:55,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:57,089 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 01:07:57,109 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:57,110 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 226 [2018-10-01 01:07:57,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-10-01 01:07:57,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-10-01 01:07:57,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:57,114 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 228 states. [2018-10-01 01:07:59,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:59,639 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-01 01:07:59,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 01:07:59,639 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 227 [2018-10-01 01:07:59,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:59,640 INFO L225 Difference]: With dead ends: 231 [2018-10-01 01:07:59,640 INFO L226 Difference]: Without dead ends: 230 [2018-10-01 01:07:59,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:07:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-01 01:07:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-10-01 01:07:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-01 01:07:59,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-10-01 01:07:59,645 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2018-10-01 01:07:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:59,645 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-10-01 01:07:59,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-10-01 01:07:59,645 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-10-01 01:07:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-01 01:07:59,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:59,646 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 1, 1] [2018-10-01 01:07:59,646 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:59,646 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:59,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1930886654, now seen corresponding path program 113 times [2018-10-01 01:07:59,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:59,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:59,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:59,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:59,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:00,482 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 01:08:00,483 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:00,483 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 01:08:00,490 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:00,717 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-10-01 01:08:00,718 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:00,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:02,775 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 01:08:02,795 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:02,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 228 [2018-10-01 01:08:02,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-10-01 01:08:02,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-10-01 01:08:02,800 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:02,800 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 230 states. [2018-10-01 01:08:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:04,863 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 01:08:04,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 01:08:04,864 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 229 [2018-10-01 01:08:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:04,864 INFO L225 Difference]: With dead ends: 233 [2018-10-01 01:08:04,864 INFO L226 Difference]: Without dead ends: 232 [2018-10-01 01:08:04,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:08:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-01 01:08:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-10-01 01:08:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-01 01:08:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-10-01 01:08:04,869 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2018-10-01 01:08:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:04,869 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-10-01 01:08:04,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-10-01 01:08:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-10-01 01:08:04,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-01 01:08:04,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:04,870 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 1, 1] [2018-10-01 01:08:04,870 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:04,870 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:04,870 INFO L82 PathProgramCache]: Analyzing trace with hash -156201532, now seen corresponding path program 114 times [2018-10-01 01:08:04,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:04,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:04,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:04,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:04,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:05,693 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 01:08:05,694 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:05,694 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:08:05,702 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:05,879 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 01:08:05,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:05,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:08,191 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 01:08:08,211 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:08,211 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 230 [2018-10-01 01:08:08,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-10-01 01:08:08,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-10-01 01:08:08,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:08,216 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 232 states. [2018-10-01 01:08:10,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:10,858 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-01 01:08:10,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 01:08:10,858 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 231 [2018-10-01 01:08:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:10,859 INFO L225 Difference]: With dead ends: 235 [2018-10-01 01:08:10,859 INFO L226 Difference]: Without dead ends: 234 [2018-10-01 01:08:10,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 01:08:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-01 01:08:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-10-01 01:08:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-01 01:08:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-10-01 01:08:10,863 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2018-10-01 01:08:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:10,863 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-10-01 01:08:10,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-10-01 01:08:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-10-01 01:08:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 01:08:10,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:10,864 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 1, 1] [2018-10-01 01:08:10,864 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:10,864 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:10,865 INFO L82 PathProgramCache]: Analyzing trace with hash 214184198, now seen corresponding path program 115 times [2018-10-01 01:08:10,865 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:10,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:10,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:10,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:10,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:11,683 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 01:08:11,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:11,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:08:11,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:11,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:14,020 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 01:08:14,040 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:14,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 232 [2018-10-01 01:08:14,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-10-01 01:08:14,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-10-01 01:08:14,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:14,045 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 234 states. [2018-10-01 01:08:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:16,250 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 01:08:16,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 01:08:16,250 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 233 [2018-10-01 01:08:16,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:16,251 INFO L225 Difference]: With dead ends: 237 [2018-10-01 01:08:16,251 INFO L226 Difference]: Without dead ends: 236 [2018-10-01 01:08:16,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:08:16,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-01 01:08:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-01 01:08:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-01 01:08:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-01 01:08:16,255 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2018-10-01 01:08:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:16,256 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-01 01:08:16,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-10-01 01:08:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-01 01:08:16,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-01 01:08:16,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:16,257 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 1, 1] [2018-10-01 01:08:16,257 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:16,257 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash -327414840, now seen corresponding path program 116 times [2018-10-01 01:08:16,257 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:16,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:16,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:16,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:16,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:17,112 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 01:08:17,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:17,113 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:08:17,140 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:17,203 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:17,203 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:17,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:19,465 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 01:08:19,485 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:19,485 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 234 [2018-10-01 01:08:19,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-10-01 01:08:19,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-10-01 01:08:19,489 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:19,489 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 236 states. [2018-10-01 01:08:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:21,534 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-01 01:08:21,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 01:08:21,534 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 235 [2018-10-01 01:08:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:21,535 INFO L225 Difference]: With dead ends: 239 [2018-10-01 01:08:21,535 INFO L226 Difference]: Without dead ends: 238 [2018-10-01 01:08:21,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 01:08:21,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-01 01:08:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-10-01 01:08:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-01 01:08:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-10-01 01:08:21,539 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2018-10-01 01:08:21,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:21,540 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-10-01 01:08:21,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-10-01 01:08:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-10-01 01:08:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-01 01:08:21,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:21,541 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 1, 1] [2018-10-01 01:08:21,541 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:21,541 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:21,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1113047542, now seen corresponding path program 117 times [2018-10-01 01:08:21,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:21,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:21,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:21,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:21,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:22,438 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 01:08:22,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:22,438 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 01:08:22,445 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:22,640 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-10-01 01:08:22,640 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:22,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:25,020 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 01:08:25,040 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:25,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 236 [2018-10-01 01:08:25,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-10-01 01:08:25,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-10-01 01:08:25,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:25,044 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 238 states. [2018-10-01 01:08:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:27,681 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 01:08:27,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 01:08:27,681 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 237 [2018-10-01 01:08:27,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:27,682 INFO L225 Difference]: With dead ends: 241 [2018-10-01 01:08:27,682 INFO L226 Difference]: Without dead ends: 240 [2018-10-01 01:08:27,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 01:08:27,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-01 01:08:27,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-10-01 01:08:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-01 01:08:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-10-01 01:08:27,686 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 237 [2018-10-01 01:08:27,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:27,687 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-10-01 01:08:27,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-10-01 01:08:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-10-01 01:08:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-01 01:08:27,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:27,687 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 1, 1] [2018-10-01 01:08:27,688 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:27,688 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:27,688 INFO L82 PathProgramCache]: Analyzing trace with hash -191830068, now seen corresponding path program 118 times [2018-10-01 01:08:27,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:27,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:27,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:27,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:27,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:28,588 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 01:08:28,588 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:28,588 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 01:08:28,595 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:28,666 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:28,666 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:28,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:30,994 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 01:08:31,015 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:31,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 238 [2018-10-01 01:08:31,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-10-01 01:08:31,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-10-01 01:08:31,019 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:31,019 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 240 states. [2018-10-01 01:08:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:33,459 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-01 01:08:33,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 01:08:33,459 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 239 [2018-10-01 01:08:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:33,460 INFO L225 Difference]: With dead ends: 243 [2018-10-01 01:08:33,460 INFO L226 Difference]: Without dead ends: 242 [2018-10-01 01:08:33,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 01:08:33,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-01 01:08:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-10-01 01:08:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-01 01:08:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-10-01 01:08:33,465 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 239 [2018-10-01 01:08:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:33,465 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-10-01 01:08:33,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-10-01 01:08:33,465 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-10-01 01:08:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-01 01:08:33,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:33,466 INFO L375 BasicCegarLoop]: trace histogram [120, 119, 1, 1] [2018-10-01 01:08:33,466 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:33,466 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:33,466 INFO L82 PathProgramCache]: Analyzing trace with hash 334899470, now seen corresponding path program 119 times [2018-10-01 01:08:33,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:33,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:33,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:33,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:33,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:34,579 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 01:08:34,579 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:34,579 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 01:08:34,587 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:34,789 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2018-10-01 01:08:34,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:34,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:37,095 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 01:08:37,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:37,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 240 [2018-10-01 01:08:37,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-10-01 01:08:37,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-10-01 01:08:37,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:37,121 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 242 states. [2018-10-01 01:08:39,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:39,527 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 01:08:39,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 01:08:39,527 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 241 [2018-10-01 01:08:39,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:39,528 INFO L225 Difference]: With dead ends: 245 [2018-10-01 01:08:39,528 INFO L226 Difference]: Without dead ends: 244 [2018-10-01 01:08:39,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 01:08:39,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-01 01:08:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-10-01 01:08:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-01 01:08:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-10-01 01:08:39,532 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 241 [2018-10-01 01:08:39,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:39,533 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-10-01 01:08:39,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-10-01 01:08:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-10-01 01:08:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-01 01:08:39,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:39,533 INFO L375 BasicCegarLoop]: trace histogram [121, 120, 1, 1] [2018-10-01 01:08:39,534 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:39,534 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:39,534 INFO L82 PathProgramCache]: Analyzing trace with hash -284155440, now seen corresponding path program 120 times [2018-10-01 01:08:39,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:39,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:39,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:39,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:39,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:40,474 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 01:08:40,475 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:40,475 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:08:40,482 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:40,667 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 01:08:40,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:40,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:43,035 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 01:08:43,055 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:43,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 242 [2018-10-01 01:08:43,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-10-01 01:08:43,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-10-01 01:08:43,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:43,060 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 244 states. [2018-10-01 01:08:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:45,431 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-01 01:08:45,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 01:08:45,431 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 243 [2018-10-01 01:08:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:45,432 INFO L225 Difference]: With dead ends: 247 [2018-10-01 01:08:45,432 INFO L226 Difference]: Without dead ends: 246 [2018-10-01 01:08:45,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 01:08:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-01 01:08:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-10-01 01:08:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-01 01:08:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-10-01 01:08:45,436 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 243 [2018-10-01 01:08:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:45,436 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-10-01 01:08:45,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-10-01 01:08:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-10-01 01:08:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-01 01:08:45,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:45,437 INFO L375 BasicCegarLoop]: trace histogram [122, 121, 1, 1] [2018-10-01 01:08:45,437 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:45,437 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:45,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1804530194, now seen corresponding path program 121 times [2018-10-01 01:08:45,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:45,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:45,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:45,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:45,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:46,348 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 01:08:46,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:46,348 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 01:08:46,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:46,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:48,899 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 01:08:48,919 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:48,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 244 [2018-10-01 01:08:48,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-10-01 01:08:48,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-10-01 01:08:48,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:48,924 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 246 states. [2018-10-01 01:08:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:51,882 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 01:08:51,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 01:08:51,882 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 245 [2018-10-01 01:08:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:51,883 INFO L225 Difference]: With dead ends: 249 [2018-10-01 01:08:51,883 INFO L226 Difference]: Without dead ends: 248 [2018-10-01 01:08:51,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 01:08:51,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-01 01:08:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-10-01 01:08:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-01 01:08:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-01 01:08:51,887 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 245 [2018-10-01 01:08:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:51,888 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-01 01:08:51,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-10-01 01:08:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-01 01:08:51,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-01 01:08:51,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:51,889 INFO L375 BasicCegarLoop]: trace histogram [123, 122, 1, 1] [2018-10-01 01:08:51,889 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:51,889 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:51,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1013270060, now seen corresponding path program 122 times [2018-10-01 01:08:51,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:51,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:51,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:51,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:51,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:52,839 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 01:08:52,839 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:52,840 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 01:08:52,850 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:52,915 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:52,915 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:52,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:55,364 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 01:08:55,384 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:55,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 246 [2018-10-01 01:08:55,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-10-01 01:08:55,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-10-01 01:08:55,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:55,389 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 248 states. [2018-10-01 01:08:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:58,330 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-01 01:08:58,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 01:08:58,330 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 247 [2018-10-01 01:08:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:58,331 INFO L225 Difference]: With dead ends: 251 [2018-10-01 01:08:58,331 INFO L226 Difference]: Without dead ends: 250 [2018-10-01 01:08:58,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 01:08:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-10-01 01:08:58,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-10-01 01:08:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-01 01:08:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-10-01 01:08:58,337 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 247 [2018-10-01 01:08:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:58,337 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-10-01 01:08:58,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-10-01 01:08:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-10-01 01:08:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-01 01:08:58,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:58,339 INFO L375 BasicCegarLoop]: trace histogram [124, 123, 1, 1] [2018-10-01 01:08:58,339 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:58,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:58,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1205049622, now seen corresponding path program 123 times [2018-10-01 01:08:58,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:58,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:58,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:58,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:58,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:59,272 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 01:08:59,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:59,273 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:08:59,279 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:59,484 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 124 check-sat command(s) [2018-10-01 01:08:59,484 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:59,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:02,047 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 01:09:02,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:02,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 248 [2018-10-01 01:09:02,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-10-01 01:09:02,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-10-01 01:09:02,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:02,073 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 250 states. [2018-10-01 01:09:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:04,783 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 01:09:04,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 01:09:04,784 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 249 [2018-10-01 01:09:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:04,784 INFO L225 Difference]: With dead ends: 253 [2018-10-01 01:09:04,784 INFO L226 Difference]: Without dead ends: 252 [2018-10-01 01:09:04,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 01:09:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-01 01:09:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-10-01 01:09:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-10-01 01:09:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-10-01 01:09:04,790 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 249 [2018-10-01 01:09:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:04,790 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-10-01 01:09:04,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-10-01 01:09:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-10-01 01:09:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-01 01:09:04,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:04,791 INFO L375 BasicCegarLoop]: trace histogram [125, 124, 1, 1] [2018-10-01 01:09:04,791 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:04,791 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:04,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482088, now seen corresponding path program 124 times [2018-10-01 01:09:04,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:04,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:04,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:04,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:04,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:05,932 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 01:09:05,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:05,932 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:09:05,939 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:06,010 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:06,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:06,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:08,366 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 01:09:08,386 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:08,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 250 [2018-10-01 01:09:08,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-10-01 01:09:08,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-10-01 01:09:08,391 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:08,391 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 252 states. [2018-10-01 01:09:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:11,130 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-01 01:09:11,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 01:09:11,131 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 251 [2018-10-01 01:09:11,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:11,131 INFO L225 Difference]: With dead ends: 255 [2018-10-01 01:09:11,131 INFO L226 Difference]: Without dead ends: 254 [2018-10-01 01:09:11,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 01:09:11,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-01 01:09:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-10-01 01:09:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-01 01:09:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-10-01 01:09:11,135 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 251 [2018-10-01 01:09:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:11,135 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-10-01 01:09:11,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-10-01 01:09:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-10-01 01:09:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-01 01:09:11,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:11,137 INFO L375 BasicCegarLoop]: trace histogram [126, 125, 1, 1] [2018-10-01 01:09:11,137 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:11,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:11,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1817895398, now seen corresponding path program 125 times [2018-10-01 01:09:11,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:11,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:11,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:11,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:11,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:12,099 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 01:09:12,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:12,099 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 01:09:12,107 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:12,319 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2018-10-01 01:09:12,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:12,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:14,842 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 01:09:14,863 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:14,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 252 [2018-10-01 01:09:14,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-10-01 01:09:14,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-10-01 01:09:14,868 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:14,868 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 254 states. [2018-10-01 01:09:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:17,717 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 01:09:17,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 01:09:17,718 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 253 [2018-10-01 01:09:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:17,718 INFO L225 Difference]: With dead ends: 257 [2018-10-01 01:09:17,718 INFO L226 Difference]: Without dead ends: 256 [2018-10-01 01:09:17,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 01:09:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-01 01:09:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-01 01:09:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-01 01:09:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-10-01 01:09:17,725 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 253 [2018-10-01 01:09:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:17,726 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-10-01 01:09:17,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-10-01 01:09:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-10-01 01:09:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-01 01:09:17,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:17,727 INFO L375 BasicCegarLoop]: trace histogram [127, 126, 1, 1] [2018-10-01 01:09:17,727 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:17,728 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:17,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1054213084, now seen corresponding path program 126 times [2018-10-01 01:09:17,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:17,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:17,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:17,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:17,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:18,744 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 01:09:18,744 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:18,745 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 01:09:18,753 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:18,963 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-10-01 01:09:18,963 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:18,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:21,587 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 01:09:21,608 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:21,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 254 [2018-10-01 01:09:21,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-10-01 01:09:21,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-10-01 01:09:21,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:21,613 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 256 states. [2018-10-01 01:09:24,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:24,199 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-10-01 01:09:24,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 01:09:24,200 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 255 [2018-10-01 01:09:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:24,200 INFO L225 Difference]: With dead ends: 259 [2018-10-01 01:09:24,200 INFO L226 Difference]: Without dead ends: 258 [2018-10-01 01:09:24,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 01:09:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-01 01:09:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-10-01 01:09:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-10-01 01:09:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-10-01 01:09:24,206 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 255 [2018-10-01 01:09:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:24,206 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-10-01 01:09:24,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-10-01 01:09:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-10-01 01:09:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-01 01:09:24,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:24,208 INFO L375 BasicCegarLoop]: trace histogram [128, 127, 1, 1] [2018-10-01 01:09:24,208 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:24,208 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:24,208 INFO L82 PathProgramCache]: Analyzing trace with hash -513507042, now seen corresponding path program 127 times [2018-10-01 01:09:24,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:24,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:24,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:24,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:24,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:25,220 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 01:09:25,221 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:25,221 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:09:25,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:25,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:27,914 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 01:09:27,935 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:27,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 256 [2018-10-01 01:09:27,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 258 states [2018-10-01 01:09:27,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2018-10-01 01:09:27,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:27,940 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 258 states. [2018-10-01 01:09:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:30,723 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-01 01:09:30,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 01:09:30,723 INFO L78 Accepts]: Start accepts. Automaton has 258 states. Word has length 257 [2018-10-01 01:09:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:30,724 INFO L225 Difference]: With dead ends: 261 [2018-10-01 01:09:30,724 INFO L226 Difference]: Without dead ends: 260 [2018-10-01 01:09:30,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 01:09:30,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-01 01:09:30,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2018-10-01 01:09:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-10-01 01:09:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2018-10-01 01:09:30,729 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 257 [2018-10-01 01:09:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:30,730 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2018-10-01 01:09:30,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 258 states. [2018-10-01 01:09:30,730 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2018-10-01 01:09:30,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-01 01:09:30,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:30,731 INFO L375 BasicCegarLoop]: trace histogram [129, 128, 1, 1] [2018-10-01 01:09:30,731 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:30,731 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:30,731 INFO L82 PathProgramCache]: Analyzing trace with hash 440972768, now seen corresponding path program 128 times [2018-10-01 01:09:30,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:30,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:30,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:30,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:30,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:31,795 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 01:09:31,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:31,796 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 01:09:31,804 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:31,871 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:31,871 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:31,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:34,449 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 01:09:34,469 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:34,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 258 [2018-10-01 01:09:34,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 260 states [2018-10-01 01:09:34,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2018-10-01 01:09:34,475 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:34,475 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand 260 states. [2018-10-01 01:09:37,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:37,303 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-10-01 01:09:37,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 01:09:37,304 INFO L78 Accepts]: Start accepts. Automaton has 260 states. Word has length 259 [2018-10-01 01:09:37,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:37,304 INFO L225 Difference]: With dead ends: 263 [2018-10-01 01:09:37,304 INFO L226 Difference]: Without dead ends: 262 [2018-10-01 01:09:37,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 01:09:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-10-01 01:09:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-10-01 01:09:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-10-01 01:09:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2018-10-01 01:09:37,312 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 259 [2018-10-01 01:09:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:37,312 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2018-10-01 01:09:37,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 260 states. [2018-10-01 01:09:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2018-10-01 01:09:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-01 01:09:37,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:37,314 INFO L375 BasicCegarLoop]: trace histogram [130, 129, 1, 1] [2018-10-01 01:09:37,314 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:37,314 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1426931166, now seen corresponding path program 129 times [2018-10-01 01:09:37,315 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:37,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:37,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,316 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:37,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:38,328 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 01:09:38,329 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:38,329 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:09:38,336 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:38,547 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 130 check-sat command(s) [2018-10-01 01:09:38,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:38,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:41,304 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 01:09:41,324 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:41,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 260 [2018-10-01 01:09:41,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 262 states [2018-10-01 01:09:41,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 262 interpolants. [2018-10-01 01:09:41,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:41,329 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand 262 states. [2018-10-01 01:09:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:44,303 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-01 01:09:44,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 01:09:44,303 INFO L78 Accepts]: Start accepts. Automaton has 262 states. Word has length 261 [2018-10-01 01:09:44,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:44,304 INFO L225 Difference]: With dead ends: 265 [2018-10-01 01:09:44,304 INFO L226 Difference]: Without dead ends: 264 [2018-10-01 01:09:44,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-10-01 01:09:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-10-01 01:09:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2018-10-01 01:09:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-01 01:09:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2018-10-01 01:09:44,309 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 261 [2018-10-01 01:09:44,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:44,309 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2018-10-01 01:09:44,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 262 states. [2018-10-01 01:09:44,309 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2018-10-01 01:09:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-01 01:09:44,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:44,310 INFO L375 BasicCegarLoop]: trace histogram [131, 130, 1, 1] [2018-10-01 01:09:44,310 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:44,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:44,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1186282012, now seen corresponding path program 130 times [2018-10-01 01:09:44,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:44,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:44,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:44,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:44,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:45,326 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 01:09:45,326 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:45,326 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 01:09:45,333 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:45,414 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:45,414 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:45,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:48,138 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 01:09:48,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:48,159 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 262 [2018-10-01 01:09:48,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 264 states [2018-10-01 01:09:48,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2018-10-01 01:09:48,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:48,164 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand 264 states. [2018-10-01 01:09:51,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:51,459 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-10-01 01:09:51,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 01:09:51,459 INFO L78 Accepts]: Start accepts. Automaton has 264 states. Word has length 263 [2018-10-01 01:09:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:51,460 INFO L225 Difference]: With dead ends: 267 [2018-10-01 01:09:51,460 INFO L226 Difference]: Without dead ends: 266 [2018-10-01 01:09:51,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 01:09:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-10-01 01:09:51,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-10-01 01:09:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-10-01 01:09:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2018-10-01 01:09:51,465 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 263 [2018-10-01 01:09:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:51,465 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2018-10-01 01:09:51,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 264 states. [2018-10-01 01:09:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2018-10-01 01:09:51,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-01 01:09:51,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:51,466 INFO L375 BasicCegarLoop]: trace histogram [132, 131, 1, 1] [2018-10-01 01:09:51,466 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:51,466 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:51,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1850679002, now seen corresponding path program 131 times [2018-10-01 01:09:51,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:51,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:51,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:51,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:51,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:52,504 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 01:09:52,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:52,505 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 01:09:52,512 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:52,745 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 132 check-sat command(s) [2018-10-01 01:09:52,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:52,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:55,464 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 01:09:55,484 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:55,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 264 [2018-10-01 01:09:55,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 266 states [2018-10-01 01:09:55,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 266 interpolants. [2018-10-01 01:09:55,489 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:55,489 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 266 states. [2018-10-01 01:09:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:58,850 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-01 01:09:58,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 01:09:58,850 INFO L78 Accepts]: Start accepts. Automaton has 266 states. Word has length 265 [2018-10-01 01:09:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:58,851 INFO L225 Difference]: With dead ends: 269 [2018-10-01 01:09:58,851 INFO L226 Difference]: Without dead ends: 268 [2018-10-01 01:09:58,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 01:09:58,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-10-01 01:09:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-10-01 01:09:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-10-01 01:09:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2018-10-01 01:09:58,855 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 265 [2018-10-01 01:09:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:58,856 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2018-10-01 01:09:58,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 266 states. [2018-10-01 01:09:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2018-10-01 01:09:58,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-01 01:09:58,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:58,857 INFO L375 BasicCegarLoop]: trace histogram [133, 132, 1, 1] [2018-10-01 01:09:58,857 INFO L423 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:58,857 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:58,857 INFO L82 PathProgramCache]: Analyzing trace with hash -386059288, now seen corresponding path program 132 times [2018-10-01 01:09:58,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:58,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:58,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:58,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:58,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:59,902 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 01:09:59,902 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:59,902 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 01:09:59,909 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:00,114 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 133 check-sat command(s) [2018-10-01 01:10:00,115 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:00,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:02,930 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 01:10:02,951 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:02,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 266 [2018-10-01 01:10:02,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 268 states [2018-10-01 01:10:02,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 268 interpolants. [2018-10-01 01:10:02,957 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:02,957 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand 268 states. [2018-10-01 01:10:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:06,137 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-10-01 01:10:06,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 01:10:06,138 INFO L78 Accepts]: Start accepts. Automaton has 268 states. Word has length 267 [2018-10-01 01:10:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:06,138 INFO L225 Difference]: With dead ends: 271 [2018-10-01 01:10:06,138 INFO L226 Difference]: Without dead ends: 270 [2018-10-01 01:10:06,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-10-01 01:10:06,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-10-01 01:10:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2018-10-01 01:10:06,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-10-01 01:10:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 270 transitions. [2018-10-01 01:10:06,143 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 270 transitions. Word has length 267 [2018-10-01 01:10:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:06,143 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 270 transitions. [2018-10-01 01:10:06,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 268 states. [2018-10-01 01:10:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 270 transitions. [2018-10-01 01:10:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-01 01:10:06,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:06,144 INFO L375 BasicCegarLoop]: trace histogram [134, 133, 1, 1] [2018-10-01 01:10:06,144 INFO L423 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:06,144 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:06,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1635787222, now seen corresponding path program 133 times [2018-10-01 01:10:06,145 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:06,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:06,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:06,145 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:06,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:07,390 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 01:10:07,390 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:07,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:10:07,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:07,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:10,262 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 01:10:10,282 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:10,282 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 268 [2018-10-01 01:10:10,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 270 states [2018-10-01 01:10:10,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 270 interpolants. [2018-10-01 01:10:10,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:10,289 INFO L87 Difference]: Start difference. First operand 270 states and 270 transitions. Second operand 270 states. [2018-10-01 01:10:13,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:13,463 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-01 01:10:13,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 01:10:13,464 INFO L78 Accepts]: Start accepts. Automaton has 270 states. Word has length 269 [2018-10-01 01:10:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:13,464 INFO L225 Difference]: With dead ends: 273 [2018-10-01 01:10:13,464 INFO L226 Difference]: Without dead ends: 272 [2018-10-01 01:10:13,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 01:10:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-10-01 01:10:13,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2018-10-01 01:10:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-10-01 01:10:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2018-10-01 01:10:13,470 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 269 [2018-10-01 01:10:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:13,470 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2018-10-01 01:10:13,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 270 states. [2018-10-01 01:10:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2018-10-01 01:10:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-01 01:10:13,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:13,471 INFO L375 BasicCegarLoop]: trace histogram [135, 134, 1, 1] [2018-10-01 01:10:13,471 INFO L423 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:13,471 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:13,471 INFO L82 PathProgramCache]: Analyzing trace with hash -33488916, now seen corresponding path program 134 times [2018-10-01 01:10:13,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:13,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:13,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:13,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:13,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:14,552 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 01:10:14,553 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:14,553 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 01:10:14,561 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:14,630 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:14,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:14,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:17,585 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 01:10:17,606 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:17,606 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 270 [2018-10-01 01:10:17,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 272 states [2018-10-01 01:10:17,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 272 interpolants. [2018-10-01 01:10:17,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:17,611 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand 272 states. [2018-10-01 01:10:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:20,565 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-10-01 01:10:20,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 01:10:20,566 INFO L78 Accepts]: Start accepts. Automaton has 272 states. Word has length 271 [2018-10-01 01:10:20,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:20,566 INFO L225 Difference]: With dead ends: 275 [2018-10-01 01:10:20,567 INFO L226 Difference]: Without dead ends: 274 [2018-10-01 01:10:20,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 01:10:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-10-01 01:10:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-10-01 01:10:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-01 01:10:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2018-10-01 01:10:20,574 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 271 [2018-10-01 01:10:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:20,574 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2018-10-01 01:10:20,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 272 states. [2018-10-01 01:10:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2018-10-01 01:10:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-01 01:10:20,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:20,576 INFO L375 BasicCegarLoop]: trace histogram [136, 135, 1, 1] [2018-10-01 01:10:20,576 INFO L423 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:20,576 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:20,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2118076114, now seen corresponding path program 135 times [2018-10-01 01:10:20,576 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:20,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:20,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:20,577 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:20,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:21,782 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 01:10:21,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:21,783 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 01:10:21,789 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:22,098 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 136 check-sat command(s) [2018-10-01 01:10:22,098 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:22,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:24,919 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 01:10:24,940 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:24,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 272 [2018-10-01 01:10:24,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 274 states [2018-10-01 01:10:24,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 274 interpolants. [2018-10-01 01:10:24,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:24,945 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand 274 states. [2018-10-01 01:10:28,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:28,254 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-01 01:10:28,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 01:10:28,254 INFO L78 Accepts]: Start accepts. Automaton has 274 states. Word has length 273 [2018-10-01 01:10:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:28,255 INFO L225 Difference]: With dead ends: 277 [2018-10-01 01:10:28,255 INFO L226 Difference]: Without dead ends: 276 [2018-10-01 01:10:28,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time [2018-10-01 01:10:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-10-01 01:10:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-10-01 01:10:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-10-01 01:10:28,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 276 transitions. [2018-10-01 01:10:28,260 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 276 transitions. Word has length 273 [2018-10-01 01:10:28,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:28,260 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 276 transitions. [2018-10-01 01:10:28,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 274 states. [2018-10-01 01:10:28,260 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 276 transitions. [2018-10-01 01:10:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-01 01:10:28,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:28,261 INFO L375 BasicCegarLoop]: trace histogram [137, 136, 1, 1] [2018-10-01 01:10:28,261 INFO L423 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:28,261 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:28,261 INFO L82 PathProgramCache]: Analyzing trace with hash 343353840, now seen corresponding path program 136 times [2018-10-01 01:10:28,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:28,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:28,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:28,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:28,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:29,340 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 01:10:29,340 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:29,340 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:10:29,347 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:29,432 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:29,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:29,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:32,536 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 01:10:32,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:32,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 274 [2018-10-01 01:10:32,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 276 states [2018-10-01 01:10:32,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 276 interpolants. [2018-10-01 01:10:32,562 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:32,562 INFO L87 Difference]: Start difference. First operand 276 states and 276 transitions. Second operand 276 states. [2018-10-01 01:10:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:36,046 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-10-01 01:10:36,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 01:10:36,046 INFO L78 Accepts]: Start accepts. Automaton has 276 states. Word has length 275 [2018-10-01 01:10:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:36,047 INFO L225 Difference]: With dead ends: 279 [2018-10-01 01:10:36,047 INFO L226 Difference]: Without dead ends: 278 [2018-10-01 01:10:36,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time [2018-10-01 01:10:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-10-01 01:10:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2018-10-01 01:10:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-10-01 01:10:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-10-01 01:10:36,052 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 275 [2018-10-01 01:10:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:36,052 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-10-01 01:10:36,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 276 states. [2018-10-01 01:10:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-10-01 01:10:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-01 01:10:36,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:36,053 INFO L375 BasicCegarLoop]: trace histogram [138, 137, 1, 1] [2018-10-01 01:10:36,053 INFO L423 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:36,053 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:36,053 INFO L82 PathProgramCache]: Analyzing trace with hash -749440462, now seen corresponding path program 137 times [2018-10-01 01:10:36,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:36,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:36,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:36,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:36,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:37,221 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 01:10:37,221 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:37,221 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:10:37,228 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:37,549 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2018-10-01 01:10:37,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:37,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:40,441 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 01:10:40,461 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:40,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 276 [2018-10-01 01:10:40,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 278 states [2018-10-01 01:10:40,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 278 interpolants. [2018-10-01 01:10:40,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:40,466 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 278 states. [2018-10-01 01:10:43,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:43,644 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-10-01 01:10:43,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 01:10:43,644 INFO L78 Accepts]: Start accepts. Automaton has 278 states. Word has length 277 [2018-10-01 01:10:43,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:43,645 INFO L225 Difference]: With dead ends: 281 [2018-10-01 01:10:43,645 INFO L226 Difference]: Without dead ends: 280 [2018-10-01 01:10:43,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 01:10:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-10-01 01:10:43,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-10-01 01:10:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-10-01 01:10:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 280 transitions. [2018-10-01 01:10:43,650 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 280 transitions. Word has length 277 [2018-10-01 01:10:43,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:43,650 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 280 transitions. [2018-10-01 01:10:43,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 278 states. [2018-10-01 01:10:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 280 transitions. [2018-10-01 01:10:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-01 01:10:43,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:43,651 INFO L375 BasicCegarLoop]: trace histogram [139, 138, 1, 1] [2018-10-01 01:10:43,651 INFO L423 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:43,651 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:43,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222836, now seen corresponding path program 138 times [2018-10-01 01:10:43,651 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:43,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:43,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:43,652 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:43,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:44,769 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 01:10:44,769 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:44,769 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 01:10:44,777 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:44,986 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 139 check-sat command(s) [2018-10-01 01:10:44,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:44,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:48,118 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 01:10:48,138 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:48,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 278 [2018-10-01 01:10:48,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 280 states [2018-10-01 01:10:48,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 280 interpolants. [2018-10-01 01:10:48,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:48,143 INFO L87 Difference]: Start difference. First operand 280 states and 280 transitions. Second operand 280 states. [2018-10-01 01:10:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:51,294 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-10-01 01:10:51,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 01:10:51,294 INFO L78 Accepts]: Start accepts. Automaton has 280 states. Word has length 279 [2018-10-01 01:10:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:51,295 INFO L225 Difference]: With dead ends: 283 [2018-10-01 01:10:51,295 INFO L226 Difference]: Without dead ends: 282 [2018-10-01 01:10:51,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time [2018-10-01 01:10:51,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-10-01 01:10:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2018-10-01 01:10:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-10-01 01:10:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2018-10-01 01:10:51,300 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 279 [2018-10-01 01:10:51,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:51,300 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2018-10-01 01:10:51,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 280 states. [2018-10-01 01:10:51,300 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2018-10-01 01:10:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-01 01:10:51,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:51,301 INFO L375 BasicCegarLoop]: trace histogram [140, 139, 1, 1] [2018-10-01 01:10:51,302 INFO L423 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:51,302 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:51,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1385957686, now seen corresponding path program 139 times [2018-10-01 01:10:51,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:51,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:51,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:51,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:51,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:52,467 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 01:10:52,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:52,467 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:10:52,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:52,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:55,559 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 01:10:55,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:55,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 280 [2018-10-01 01:10:55,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 282 states [2018-10-01 01:10:55,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 282 interpolants. [2018-10-01 01:10:55,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:55,585 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand 282 states. [2018-10-01 01:10:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:59,132 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-01 01:10:59,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 01:10:59,132 INFO L78 Accepts]: Start accepts. Automaton has 282 states. Word has length 281 [2018-10-01 01:10:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:59,133 INFO L225 Difference]: With dead ends: 285 [2018-10-01 01:10:59,133 INFO L226 Difference]: Without dead ends: 284 [2018-10-01 01:10:59,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time [2018-10-01 01:10:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-10-01 01:10:59,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2018-10-01 01:10:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-01 01:10:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2018-10-01 01:10:59,138 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 281 [2018-10-01 01:10:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:59,138 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2018-10-01 01:10:59,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 282 states. [2018-10-01 01:10:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2018-10-01 01:10:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-01 01:10:59,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:59,139 INFO L375 BasicCegarLoop]: trace histogram [141, 140, 1, 1] [2018-10-01 01:10:59,139 INFO L423 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:59,140 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:59,140 INFO L82 PathProgramCache]: Analyzing trace with hash 465475576, now seen corresponding path program 140 times [2018-10-01 01:10:59,140 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:59,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:59,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:59,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:59,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:00,277 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 01:11:00,278 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:00,278 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 01:11:00,285 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:00,359 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:00,359 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:00,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:03,522 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 01:11:03,542 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:03,542 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 282 [2018-10-01 01:11:03,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 284 states [2018-10-01 01:11:03,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 284 interpolants. [2018-10-01 01:11:03,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:03,547 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 284 states. [2018-10-01 01:11:06,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:06,784 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-10-01 01:11:06,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 01:11:06,784 INFO L78 Accepts]: Start accepts. Automaton has 284 states. Word has length 283 [2018-10-01 01:11:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:06,785 INFO L225 Difference]: With dead ends: 287 [2018-10-01 01:11:06,785 INFO L226 Difference]: Without dead ends: 286 [2018-10-01 01:11:06,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time [2018-10-01 01:11:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-10-01 01:11:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-10-01 01:11:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-10-01 01:11:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2018-10-01 01:11:06,792 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 283 [2018-10-01 01:11:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:06,793 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2018-10-01 01:11:06,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 284 states. [2018-10-01 01:11:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2018-10-01 01:11:06,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-01 01:11:06,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:06,794 INFO L375 BasicCegarLoop]: trace histogram [142, 141, 1, 1] [2018-10-01 01:11:06,794 INFO L423 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:06,794 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:06,794 INFO L82 PathProgramCache]: Analyzing trace with hash 645430842, now seen corresponding path program 141 times [2018-10-01 01:11:06,794 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:06,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:06,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:06,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:06,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:08,003 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 01:11:08,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:08,003 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 01:11:08,010 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:08,304 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 142 check-sat command(s) [2018-10-01 01:11:08,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:08,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:11,378 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 01:11:11,399 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:11,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 284 [2018-10-01 01:11:11,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 286 states [2018-10-01 01:11:11,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 286 interpolants. [2018-10-01 01:11:11,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:11,406 INFO L87 Difference]: Start difference. First operand 286 states and 286 transitions. Second operand 286 states. [2018-10-01 01:11:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:15,216 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-10-01 01:11:15,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 01:11:15,217 INFO L78 Accepts]: Start accepts. Automaton has 286 states. Word has length 285 [2018-10-01 01:11:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:15,217 INFO L225 Difference]: With dead ends: 289 [2018-10-01 01:11:15,217 INFO L226 Difference]: Without dead ends: 288 [2018-10-01 01:11:15,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time [2018-10-01 01:11:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-10-01 01:11:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2018-10-01 01:11:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-10-01 01:11:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2018-10-01 01:11:15,222 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 285 [2018-10-01 01:11:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:15,223 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2018-10-01 01:11:15,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 286 states. [2018-10-01 01:11:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2018-10-01 01:11:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-01 01:11:15,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:15,224 INFO L375 BasicCegarLoop]: trace histogram [143, 142, 1, 1] [2018-10-01 01:11:15,224 INFO L423 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:15,224 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:15,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1783749628, now seen corresponding path program 142 times [2018-10-01 01:11:15,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:15,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:15,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:15,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:16,373 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 01:11:16,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:16,373 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 01:11:16,380 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:16,470 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:16,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:16,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:19,665 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 01:11:19,685 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:19,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 286 [2018-10-01 01:11:19,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 288 states [2018-10-01 01:11:19,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 288 interpolants. [2018-10-01 01:11:19,690 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:19,690 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand 288 states. [2018-10-01 01:11:23,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:23,094 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-10-01 01:11:23,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 01:11:23,095 INFO L78 Accepts]: Start accepts. Automaton has 288 states. Word has length 287 [2018-10-01 01:11:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:23,095 INFO L225 Difference]: With dead ends: 291 [2018-10-01 01:11:23,095 INFO L226 Difference]: Without dead ends: 290 [2018-10-01 01:11:23,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time [2018-10-01 01:11:23,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-10-01 01:11:23,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-10-01 01:11:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-10-01 01:11:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2018-10-01 01:11:23,101 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 287 [2018-10-01 01:11:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:23,101 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2018-10-01 01:11:23,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 288 states. [2018-10-01 01:11:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2018-10-01 01:11:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-01 01:11:23,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:23,102 INFO L375 BasicCegarLoop]: trace histogram [144, 143, 1, 1] [2018-10-01 01:11:23,102 INFO L423 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:23,102 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:23,102 INFO L82 PathProgramCache]: Analyzing trace with hash 491442494, now seen corresponding path program 143 times [2018-10-01 01:11:23,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:23,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:23,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:23,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:23,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:24,421 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 01:11:24,421 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:24,421 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 01:11:24,431 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:24,705 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 144 check-sat command(s) [2018-10-01 01:11:24,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:24,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:27,791 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 01:11:27,812 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:27,812 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 288 [2018-10-01 01:11:27,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 290 states [2018-10-01 01:11:27,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 290 interpolants. [2018-10-01 01:11:27,818 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:27,818 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand 290 states. [2018-10-01 01:11:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:31,543 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-10-01 01:11:31,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 01:11:31,544 INFO L78 Accepts]: Start accepts. Automaton has 290 states. Word has length 289 [2018-10-01 01:11:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:31,544 INFO L225 Difference]: With dead ends: 293 [2018-10-01 01:11:31,545 INFO L226 Difference]: Without dead ends: 292 [2018-10-01 01:11:31,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time [2018-10-01 01:11:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-01 01:11:31,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-10-01 01:11:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-10-01 01:11:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2018-10-01 01:11:31,550 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 289 [2018-10-01 01:11:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:31,550 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2018-10-01 01:11:31,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 290 states. [2018-10-01 01:11:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2018-10-01 01:11:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-01 01:11:31,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:31,551 INFO L375 BasicCegarLoop]: trace histogram [145, 144, 1, 1] [2018-10-01 01:11:31,551 INFO L423 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:31,551 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:31,551 INFO L82 PathProgramCache]: Analyzing trace with hash -170164736, now seen corresponding path program 144 times [2018-10-01 01:11:31,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:31,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:31,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:31,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:31,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:32,737 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:32,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:32,744 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:32,972 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 145 check-sat command(s) [2018-10-01 01:11:32,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:32,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:36,265 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:36,266 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 290 [2018-10-01 01:11:36,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 292 states [2018-10-01 01:11:36,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 292 interpolants. [2018-10-01 01:11:36,272 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:36,272 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand 292 states. [2018-10-01 01:11:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:39,640 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-10-01 01:11:39,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 01:11:39,641 INFO L78 Accepts]: Start accepts. Automaton has 292 states. Word has length 291 [2018-10-01 01:11:39,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:39,641 INFO L225 Difference]: With dead ends: 295 [2018-10-01 01:11:39,641 INFO L226 Difference]: Without dead ends: 294 [2018-10-01 01:11:39,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time [2018-10-01 01:11:39,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-10-01 01:11:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2018-10-01 01:11:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-01 01:11:39,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2018-10-01 01:11:39,647 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 291 [2018-10-01 01:11:39,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:39,647 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2018-10-01 01:11:39,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 292 states. [2018-10-01 01:11:39,647 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2018-10-01 01:11:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-01 01:11:39,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:39,648 INFO L375 BasicCegarLoop]: trace histogram [146, 145, 1, 1] [2018-10-01 01:11:39,648 INFO L423 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:39,648 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash -319552958, now seen corresponding path program 145 times [2018-10-01 01:11:39,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:39,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:39,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:39,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:39,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:40,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:40,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:40,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:40,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:44,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:44,350 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 292 [2018-10-01 01:11:44,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 294 states [2018-10-01 01:11:44,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 294 interpolants. [2018-10-01 01:11:44,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:44,355 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand 294 states. [2018-10-01 01:11:48,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:48,021 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-10-01 01:11:48,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 01:11:48,021 INFO L78 Accepts]: Start accepts. Automaton has 294 states. Word has length 293 [2018-10-01 01:11:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:48,022 INFO L225 Difference]: With dead ends: 297 [2018-10-01 01:11:48,022 INFO L226 Difference]: Without dead ends: 296 [2018-10-01 01:11:48,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time [2018-10-01 01:11:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-10-01 01:11:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-10-01 01:11:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-10-01 01:11:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 296 transitions. [2018-10-01 01:11:48,027 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 296 transitions. Word has length 293 [2018-10-01 01:11:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:48,027 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 296 transitions. [2018-10-01 01:11:48,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 294 states. [2018-10-01 01:11:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 296 transitions. [2018-10-01 01:11:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-01 01:11:48,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:48,028 INFO L375 BasicCegarLoop]: trace histogram [147, 146, 1, 1] [2018-10-01 01:11:48,029 INFO L423 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:48,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:48,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2147253764, now seen corresponding path program 146 times [2018-10-01 01:11:48,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:48,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:48,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:48,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:48,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:49,426 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:49,426 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:49,434 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:49,511 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:49,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:49,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:52,844 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:52,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 294 [2018-10-01 01:11:52,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 296 states [2018-10-01 01:11:52,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 296 interpolants. [2018-10-01 01:11:52,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:52,850 INFO L87 Difference]: Start difference. First operand 296 states and 296 transitions. Second operand 296 states. [2018-10-01 01:11:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:56,144 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-10-01 01:11:56,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 01:11:56,144 INFO L78 Accepts]: Start accepts. Automaton has 296 states. Word has length 295 [2018-10-01 01:11:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:56,145 INFO L225 Difference]: With dead ends: 299 [2018-10-01 01:11:56,145 INFO L226 Difference]: Without dead ends: 298 [2018-10-01 01:11:56,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time [2018-10-01 01:11:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-01 01:11:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-10-01 01:11:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-10-01 01:11:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2018-10-01 01:11:56,153 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 295 [2018-10-01 01:11:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:56,153 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2018-10-01 01:11:56,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 296 states. [2018-10-01 01:11:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2018-10-01 01:11:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-01 01:11:56,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:56,154 INFO L375 BasicCegarLoop]: trace histogram [148, 147, 1, 1] [2018-10-01 01:11:56,155 INFO L423 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:56,155 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:56,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1926566214, now seen corresponding path program 147 times [2018-10-01 01:11:56,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:56,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:56,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:56,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:56,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:57,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:57,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:57,550 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:57,823 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 148 check-sat command(s) [2018-10-01 01:11:57,823 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:57,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:01,356 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:01,356 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 296 [2018-10-01 01:12:01,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 298 states [2018-10-01 01:12:01,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 298 interpolants. [2018-10-01 01:12:01,362 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:01,362 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand 298 states. [2018-10-01 01:12:05,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:05,533 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-10-01 01:12:05,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 01:12:05,533 INFO L78 Accepts]: Start accepts. Automaton has 298 states. Word has length 297 [2018-10-01 01:12:05,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:05,534 INFO L225 Difference]: With dead ends: 301 [2018-10-01 01:12:05,534 INFO L226 Difference]: Without dead ends: 300 [2018-10-01 01:12:05,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time [2018-10-01 01:12:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-10-01 01:12:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2018-10-01 01:12:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-10-01 01:12:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 300 transitions. [2018-10-01 01:12:05,539 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 300 transitions. Word has length 297 [2018-10-01 01:12:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:05,539 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 300 transitions. [2018-10-01 01:12:05,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 298 states. [2018-10-01 01:12:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 300 transitions. [2018-10-01 01:12:05,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-01 01:12:05,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:05,540 INFO L375 BasicCegarLoop]: trace histogram [149, 148, 1, 1] [2018-10-01 01:12:05,541 INFO L423 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:05,541 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:05,541 INFO L82 PathProgramCache]: Analyzing trace with hash 299228168, now seen corresponding path program 148 times [2018-10-01 01:12:05,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:05,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:05,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:05,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:05,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:06,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:06,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:06,808 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:06,906 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:06,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:06,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:10,555 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:10,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 298 [2018-10-01 01:12:10,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 300 states [2018-10-01 01:12:10,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 300 interpolants. [2018-10-01 01:12:10,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:10,561 INFO L87 Difference]: Start difference. First operand 300 states and 300 transitions. Second operand 300 states. [2018-10-01 01:12:14,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:14,665 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-10-01 01:12:14,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 01:12:14,666 INFO L78 Accepts]: Start accepts. Automaton has 300 states. Word has length 299 [2018-10-01 01:12:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:14,666 INFO L225 Difference]: With dead ends: 303 [2018-10-01 01:12:14,666 INFO L226 Difference]: Without dead ends: 302 [2018-10-01 01:12:14,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time [2018-10-01 01:12:14,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-10-01 01:12:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2018-10-01 01:12:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-10-01 01:12:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2018-10-01 01:12:14,672 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 299 [2018-10-01 01:12:14,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:14,672 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2018-10-01 01:12:14,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 300 states. [2018-10-01 01:12:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2018-10-01 01:12:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-01 01:12:14,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:14,673 INFO L375 BasicCegarLoop]: trace histogram [150, 149, 1, 1] [2018-10-01 01:12:14,673 INFO L423 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:14,673 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -204538294, now seen corresponding path program 149 times [2018-10-01 01:12:14,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:14,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:14,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:14,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:14,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:15,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:15,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:15,946 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:16,253 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 150 check-sat command(s) [2018-10-01 01:12:16,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:16,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:19,793 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:19,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 300 [2018-10-01 01:12:19,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 302 states [2018-10-01 01:12:19,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 302 interpolants. [2018-10-01 01:12:19,799 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:19,799 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 302 states. [2018-10-01 01:12:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:23,442 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-10-01 01:12:23,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 01:12:23,442 INFO L78 Accepts]: Start accepts. Automaton has 302 states. Word has length 301 [2018-10-01 01:12:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:23,443 INFO L225 Difference]: With dead ends: 305 [2018-10-01 01:12:23,443 INFO L226 Difference]: Without dead ends: 304 [2018-10-01 01:12:23,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time [2018-10-01 01:12:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-10-01 01:12:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-10-01 01:12:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-10-01 01:12:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2018-10-01 01:12:23,448 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 301 [2018-10-01 01:12:23,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:23,448 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2018-10-01 01:12:23,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 302 states. [2018-10-01 01:12:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2018-10-01 01:12:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-01 01:12:23,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:23,450 INFO L375 BasicCegarLoop]: trace histogram [151, 150, 1, 1] [2018-10-01 01:12:23,450 INFO L423 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:23,450 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:23,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1007196172, now seen corresponding path program 150 times [2018-10-01 01:12:23,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:23,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:23,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:23,451 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:23,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:24,759 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:24,759 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:24,767 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:25,023 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 151 check-sat command(s) [2018-10-01 01:12:25,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:25,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:28,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:28,508 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 302 [2018-10-01 01:12:28,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 304 states [2018-10-01 01:12:28,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 304 interpolants. [2018-10-01 01:12:28,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:28,513 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand 304 states. [2018-10-01 01:12:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:32,538 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-10-01 01:12:32,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 01:12:32,538 INFO L78 Accepts]: Start accepts. Automaton has 304 states. Word has length 303 [2018-10-01 01:12:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:32,539 INFO L225 Difference]: With dead ends: 307 [2018-10-01 01:12:32,539 INFO L226 Difference]: Without dead ends: 306 [2018-10-01 01:12:32,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time [2018-10-01 01:12:32,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-10-01 01:12:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2018-10-01 01:12:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-10-01 01:12:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2018-10-01 01:12:32,544 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 303 [2018-10-01 01:12:32,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:32,545 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2018-10-01 01:12:32,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 304 states. [2018-10-01 01:12:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2018-10-01 01:12:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-01 01:12:32,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:32,546 INFO L375 BasicCegarLoop]: trace histogram [152, 151, 1, 1] [2018-10-01 01:12:32,546 INFO L423 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:32,546 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:32,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1547880782, now seen corresponding path program 151 times [2018-10-01 01:12:32,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:32,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:32,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:32,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:32,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:33,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:33,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:33,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:33,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:37,632 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:37,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 304 [2018-10-01 01:12:37,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 306 states [2018-10-01 01:12:37,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 306 interpolants. [2018-10-01 01:12:37,638 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:37,638 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand 306 states. [2018-10-01 01:12:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:41,916 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-10-01 01:12:41,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 01:12:41,916 INFO L78 Accepts]: Start accepts. Automaton has 306 states. Word has length 305 [2018-10-01 01:12:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:41,917 INFO L225 Difference]: With dead ends: 309 [2018-10-01 01:12:41,917 INFO L226 Difference]: Without dead ends: 308 [2018-10-01 01:12:41,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time [2018-10-01 01:12:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-10-01 01:12:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-10-01 01:12:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-10-01 01:12:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-10-01 01:12:41,925 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 305 [2018-10-01 01:12:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:41,926 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-10-01 01:12:41,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 306 states. [2018-10-01 01:12:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-10-01 01:12:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-01 01:12:41,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:41,928 INFO L375 BasicCegarLoop]: trace histogram [153, 152, 1, 1] [2018-10-01 01:12:41,928 INFO L423 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:41,928 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:41,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1454748176, now seen corresponding path program 152 times [2018-10-01 01:12:41,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:41,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:41,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:41,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:41,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:43,472 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:43,473 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:43,480 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:43,558 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:43,558 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:43,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:47,264 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:47,264 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 306 [2018-10-01 01:12:47,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 308 states [2018-10-01 01:12:47,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 308 interpolants. [2018-10-01 01:12:47,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:47,270 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 308 states. [2018-10-01 01:12:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:51,244 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-10-01 01:12:51,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 01:12:51,244 INFO L78 Accepts]: Start accepts. Automaton has 308 states. Word has length 307 [2018-10-01 01:12:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:51,245 INFO L225 Difference]: With dead ends: 311 [2018-10-01 01:12:51,245 INFO L226 Difference]: Without dead ends: 310 [2018-10-01 01:12:51,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time [2018-10-01 01:12:51,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-10-01 01:12:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-10-01 01:12:51,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-10-01 01:12:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 310 transitions. [2018-10-01 01:12:51,252 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 310 transitions. Word has length 307 [2018-10-01 01:12:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:51,252 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 310 transitions. [2018-10-01 01:12:51,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 308 states. [2018-10-01 01:12:51,252 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 310 transitions. [2018-10-01 01:12:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-01 01:12:51,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:51,253 INFO L375 BasicCegarLoop]: trace histogram [154, 153, 1, 1] [2018-10-01 01:12:51,253 INFO L423 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:51,253 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2146340270, now seen corresponding path program 153 times [2018-10-01 01:12:51,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:51,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:51,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:51,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:51,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:52,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:52,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:52,589 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:52,871 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 154 check-sat command(s) [2018-10-01 01:12:52,871 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:52,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:56,677 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:56,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 308 [2018-10-01 01:12:56,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 310 states [2018-10-01 01:12:56,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 310 interpolants. [2018-10-01 01:12:56,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:56,683 INFO L87 Difference]: Start difference. First operand 310 states and 310 transitions. Second operand 310 states. [2018-10-01 01:13:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:00,491 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-01 01:13:00,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-10-01 01:13:00,491 INFO L78 Accepts]: Start accepts. Automaton has 310 states. Word has length 309 [2018-10-01 01:13:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:00,492 INFO L225 Difference]: With dead ends: 313 [2018-10-01 01:13:00,492 INFO L226 Difference]: Without dead ends: 312 [2018-10-01 01:13:00,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time [2018-10-01 01:13:00,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-10-01 01:13:00,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2018-10-01 01:13:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-10-01 01:13:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 312 transitions. [2018-10-01 01:13:00,497 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 312 transitions. Word has length 309 [2018-10-01 01:13:00,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:00,498 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 312 transitions. [2018-10-01 01:13:00,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 310 states. [2018-10-01 01:13:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 312 transitions. [2018-10-01 01:13:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-01 01:13:00,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:00,499 INFO L375 BasicCegarLoop]: trace histogram [155, 154, 1, 1] [2018-10-01 01:13:00,499 INFO L423 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:00,499 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:00,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1048696300, now seen corresponding path program 154 times [2018-10-01 01:13:00,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:00,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:00,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:00,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:00,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:01,889 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:01,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:01,896 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:13:01,994 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:13:01,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:02,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:05,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:05,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 310 [2018-10-01 01:13:05,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 312 states [2018-10-01 01:13:05,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 312 interpolants. [2018-10-01 01:13:05,624 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:05,624 INFO L87 Difference]: Start difference. First operand 312 states and 312 transitions. Second operand 312 states. [2018-10-01 01:13:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:09,614 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-01 01:13:09,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 01:13:09,615 INFO L78 Accepts]: Start accepts. Automaton has 312 states. Word has length 311 [2018-10-01 01:13:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:09,615 INFO L225 Difference]: With dead ends: 315 [2018-10-01 01:13:09,615 INFO L226 Difference]: Without dead ends: 314 [2018-10-01 01:13:09,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time [2018-10-01 01:13:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-10-01 01:13:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2018-10-01 01:13:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-10-01 01:13:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2018-10-01 01:13:09,621 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 311 [2018-10-01 01:13:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:09,621 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2018-10-01 01:13:09,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 312 states. [2018-10-01 01:13:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2018-10-01 01:13:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-01 01:13:09,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:09,622 INFO L375 BasicCegarLoop]: trace histogram [156, 155, 1, 1] [2018-10-01 01:13:09,622 INFO L423 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:09,622 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:09,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1520171350, now seen corresponding path program 155 times [2018-10-01 01:13:09,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:09,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:09,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:09,623 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:09,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:11,118 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:11,118 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:11,126 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:11,452 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 156 check-sat command(s) [2018-10-01 01:13:11,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:11,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:15,036 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:15,037 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 312 [2018-10-01 01:13:15,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 314 states [2018-10-01 01:13:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 314 interpolants. [2018-10-01 01:13:15,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:15,043 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand 314 states. [2018-10-01 01:13:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:19,180 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-10-01 01:13:19,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-10-01 01:13:19,181 INFO L78 Accepts]: Start accepts. Automaton has 314 states. Word has length 313 [2018-10-01 01:13:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:19,181 INFO L225 Difference]: With dead ends: 317 [2018-10-01 01:13:19,181 INFO L226 Difference]: Without dead ends: 316 [2018-10-01 01:13:19,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time [2018-10-01 01:13:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-10-01 01:13:19,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-10-01 01:13:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-10-01 01:13:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2018-10-01 01:13:19,190 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 313 [2018-10-01 01:13:19,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:19,190 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2018-10-01 01:13:19,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 314 states. [2018-10-01 01:13:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2018-10-01 01:13:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-01 01:13:19,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:19,192 INFO L375 BasicCegarLoop]: trace histogram [157, 156, 1, 1] [2018-10-01 01:13:19,192 INFO L423 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:19,192 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:19,193 INFO L82 PathProgramCache]: Analyzing trace with hash 595787800, now seen corresponding path program 156 times [2018-10-01 01:13:19,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:19,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:19,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:19,193 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:19,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:20,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:20,637 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:20,645 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:20,929 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 157 check-sat command(s) [2018-10-01 01:13:20,930 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:20,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:24,842 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:24,843 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 314 [2018-10-01 01:13:24,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 316 states [2018-10-01 01:13:24,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 316 interpolants. [2018-10-01 01:13:24,849 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:24,849 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand 316 states. [2018-10-01 01:13:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:29,419 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-10-01 01:13:29,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 01:13:29,419 INFO L78 Accepts]: Start accepts. Automaton has 316 states. Word has length 315 [2018-10-01 01:13:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:29,420 INFO L225 Difference]: With dead ends: 319 [2018-10-01 01:13:29,420 INFO L226 Difference]: Without dead ends: 318 [2018-10-01 01:13:29,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time [2018-10-01 01:13:29,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-10-01 01:13:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2018-10-01 01:13:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-10-01 01:13:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 318 transitions. [2018-10-01 01:13:29,425 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 318 transitions. Word has length 315 [2018-10-01 01:13:29,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:29,425 INFO L480 AbstractCegarLoop]: Abstraction has 318 states and 318 transitions. [2018-10-01 01:13:29,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 316 states. [2018-10-01 01:13:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 318 transitions. [2018-10-01 01:13:29,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-10-01 01:13:29,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:29,427 INFO L375 BasicCegarLoop]: trace histogram [158, 157, 1, 1] [2018-10-01 01:13:29,427 INFO L423 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:29,427 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:29,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1321426522, now seen corresponding path program 157 times [2018-10-01 01:13:29,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:29,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:29,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:29,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:29,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:30,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:30,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:30,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:30,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:34,839 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:34,839 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 316 [2018-10-01 01:13:34,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 318 states [2018-10-01 01:13:34,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 318 interpolants. [2018-10-01 01:13:34,845 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:34,845 INFO L87 Difference]: Start difference. First operand 318 states and 318 transitions. Second operand 318 states. [2018-10-01 01:13:39,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:39,440 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-10-01 01:13:39,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-10-01 01:13:39,440 INFO L78 Accepts]: Start accepts. Automaton has 318 states. Word has length 317 [2018-10-01 01:13:39,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:39,441 INFO L225 Difference]: With dead ends: 321 [2018-10-01 01:13:39,441 INFO L226 Difference]: Without dead ends: 320 [2018-10-01 01:13:39,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time [2018-10-01 01:13:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-10-01 01:13:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2018-10-01 01:13:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-10-01 01:13:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2018-10-01 01:13:39,446 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 317 [2018-10-01 01:13:39,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:39,446 INFO L480 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2018-10-01 01:13:39,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 318 states. [2018-10-01 01:13:39,446 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2018-10-01 01:13:39,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-01 01:13:39,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:39,447 INFO L375 BasicCegarLoop]: trace histogram [159, 158, 1, 1] [2018-10-01 01:13:39,447 INFO L423 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:39,447 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:39,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1419430884, now seen corresponding path program 158 times [2018-10-01 01:13:39,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:39,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:39,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:39,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:39,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:40,825 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:40,825 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:40,832 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:40,914 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:40,914 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:40,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:44,883 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:44,884 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 318 [2018-10-01 01:13:44,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 320 states [2018-10-01 01:13:44,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 320 interpolants. [2018-10-01 01:13:44,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:44,892 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 320 states. [2018-10-01 01:13:49,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:49,461 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-10-01 01:13:49,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 01:13:49,461 INFO L78 Accepts]: Start accepts. Automaton has 320 states. Word has length 319 [2018-10-01 01:13:49,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:49,462 INFO L225 Difference]: With dead ends: 323 [2018-10-01 01:13:49,462 INFO L226 Difference]: Without dead ends: 322 [2018-10-01 01:13:49,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time [2018-10-01 01:13:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-10-01 01:13:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-10-01 01:13:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-10-01 01:13:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2018-10-01 01:13:49,467 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 319 [2018-10-01 01:13:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:49,468 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2018-10-01 01:13:49,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 320 states. [2018-10-01 01:13:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2018-10-01 01:13:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-01 01:13:49,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:49,469 INFO L375 BasicCegarLoop]: trace histogram [160, 159, 1, 1] [2018-10-01 01:13:49,469 INFO L423 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:49,469 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1726521694, now seen corresponding path program 159 times [2018-10-01 01:13:49,469 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:49,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:49,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:49,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:49,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:50,880 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:50,880 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:50,886 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:13:51,206 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 160 check-sat command(s) [2018-10-01 01:13:51,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:51,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:55,224 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:55,224 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 320 [2018-10-01 01:13:55,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 322 states [2018-10-01 01:13:55,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 322 interpolants. [2018-10-01 01:13:55,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:55,231 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand 322 states. [2018-10-01 01:13:59,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:59,755 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-10-01 01:13:59,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-10-01 01:13:59,756 INFO L78 Accepts]: Start accepts. Automaton has 322 states. Word has length 321 [2018-10-01 01:13:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:59,756 INFO L225 Difference]: With dead ends: 325 [2018-10-01 01:13:59,756 INFO L226 Difference]: Without dead ends: 324 [2018-10-01 01:13:59,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time [2018-10-01 01:13:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-01 01:13:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2018-10-01 01:13:59,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-10-01 01:13:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 324 transitions. [2018-10-01 01:13:59,762 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 324 transitions. Word has length 321 [2018-10-01 01:13:59,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:59,762 INFO L480 AbstractCegarLoop]: Abstraction has 324 states and 324 transitions. [2018-10-01 01:13:59,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 322 states. [2018-10-01 01:13:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 324 transitions. [2018-10-01 01:13:59,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-01 01:13:59,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:59,764 INFO L375 BasicCegarLoop]: trace histogram [161, 160, 1, 1] [2018-10-01 01:13:59,764 INFO L423 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:59,764 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:59,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1329972768, now seen corresponding path program 160 times [2018-10-01 01:13:59,764 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:59,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:59,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:59,765 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:59,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:01,213 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:01,214 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:01,221 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:01,325 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:01,325 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:01,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:05,400 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:05,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 322 [2018-10-01 01:14:05,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 324 states [2018-10-01 01:14:05,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 324 interpolants. [2018-10-01 01:14:05,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:05,407 INFO L87 Difference]: Start difference. First operand 324 states and 324 transitions. Second operand 324 states. [2018-10-01 01:14:10,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:10,281 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-10-01 01:14:10,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 01:14:10,282 INFO L78 Accepts]: Start accepts. Automaton has 324 states. Word has length 323 [2018-10-01 01:14:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:10,282 INFO L225 Difference]: With dead ends: 327 [2018-10-01 01:14:10,282 INFO L226 Difference]: Without dead ends: 326 [2018-10-01 01:14:10,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time [2018-10-01 01:14:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-10-01 01:14:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2018-10-01 01:14:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-10-01 01:14:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2018-10-01 01:14:10,289 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 323 [2018-10-01 01:14:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:10,289 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2018-10-01 01:14:10,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 324 states. [2018-10-01 01:14:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2018-10-01 01:14:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-01 01:14:10,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:10,290 INFO L375 BasicCegarLoop]: trace histogram [162, 161, 1, 1] [2018-10-01 01:14:10,290 INFO L423 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:10,290 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:10,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1796423070, now seen corresponding path program 161 times [2018-10-01 01:14:10,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:10,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:10,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:10,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:10,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:11,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:11,708 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:11,715 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:12,055 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 162 check-sat command(s) [2018-10-01 01:14:12,055 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:12,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:16,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:16,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 324 [2018-10-01 01:14:16,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 326 states [2018-10-01 01:14:16,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 326 interpolants. [2018-10-01 01:14:16,119 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:16,119 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand 326 states. [2018-10-01 01:14:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:21,179 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-10-01 01:14:21,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-10-01 01:14:21,180 INFO L78 Accepts]: Start accepts. Automaton has 326 states. Word has length 325 [2018-10-01 01:14:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:21,180 INFO L225 Difference]: With dead ends: 329 [2018-10-01 01:14:21,180 INFO L226 Difference]: Without dead ends: 328 [2018-10-01 01:14:21,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time [2018-10-01 01:14:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-10-01 01:14:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-10-01 01:14:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-10-01 01:14:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2018-10-01 01:14:21,186 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 325 [2018-10-01 01:14:21,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:21,186 INFO L480 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2018-10-01 01:14:21,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 326 states. [2018-10-01 01:14:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2018-10-01 01:14:21,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-01 01:14:21,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:21,187 INFO L375 BasicCegarLoop]: trace histogram [163, 162, 1, 1] [2018-10-01 01:14:21,187 INFO L423 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:21,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:21,188 INFO L82 PathProgramCache]: Analyzing trace with hash 214283812, now seen corresponding path program 162 times [2018-10-01 01:14:21,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:21,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:21,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:21,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:21,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:22,720 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:22,720 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:22,756 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:14:23,039 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 163 check-sat command(s) [2018-10-01 01:14:23,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:23,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:27,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:27,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 326 [2018-10-01 01:14:27,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 328 states [2018-10-01 01:14:27,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 328 interpolants. [2018-10-01 01:14:27,094 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:27,094 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand 328 states. [2018-10-01 01:14:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:31,945 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-10-01 01:14:31,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 01:14:31,945 INFO L78 Accepts]: Start accepts. Automaton has 328 states. Word has length 327 [2018-10-01 01:14:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:31,946 INFO L225 Difference]: With dead ends: 331 [2018-10-01 01:14:31,946 INFO L226 Difference]: Without dead ends: 330 [2018-10-01 01:14:31,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time [2018-10-01 01:14:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-10-01 01:14:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-10-01 01:14:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-10-01 01:14:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2018-10-01 01:14:31,952 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 327 [2018-10-01 01:14:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:31,952 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2018-10-01 01:14:31,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 328 states. [2018-10-01 01:14:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2018-10-01 01:14:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-01 01:14:31,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:31,953 INFO L375 BasicCegarLoop]: trace histogram [164, 163, 1, 1] [2018-10-01 01:14:31,953 INFO L423 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:31,953 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:31,954 INFO L82 PathProgramCache]: Analyzing trace with hash -231685786, now seen corresponding path program 163 times [2018-10-01 01:14:31,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:31,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:31,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:31,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:31,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:33,574 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:33,574 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:33,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:33,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:37,706 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:37,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 328 [2018-10-01 01:14:37,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 330 states [2018-10-01 01:14:37,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 330 interpolants. [2018-10-01 01:14:37,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:37,714 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand 330 states. [2018-10-01 01:14:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:42,244 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-01 01:14:42,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-10-01 01:14:42,245 INFO L78 Accepts]: Start accepts. Automaton has 330 states. Word has length 329 [2018-10-01 01:14:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:42,245 INFO L225 Difference]: With dead ends: 333 [2018-10-01 01:14:42,245 INFO L226 Difference]: Without dead ends: 332 [2018-10-01 01:14:42,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s Time [2018-10-01 01:14:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-10-01 01:14:42,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2018-10-01 01:14:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-10-01 01:14:42,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 332 transitions. [2018-10-01 01:14:42,253 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 332 transitions. Word has length 329 [2018-10-01 01:14:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:42,254 INFO L480 AbstractCegarLoop]: Abstraction has 332 states and 332 transitions. [2018-10-01 01:14:42,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 330 states. [2018-10-01 01:14:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 332 transitions. [2018-10-01 01:14:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-01 01:14:42,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:42,255 INFO L375 BasicCegarLoop]: trace histogram [165, 164, 1, 1] [2018-10-01 01:14:42,256 INFO L423 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:42,256 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:42,256 INFO L82 PathProgramCache]: Analyzing trace with hash 688260136, now seen corresponding path program 164 times [2018-10-01 01:14:42,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:42,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:42,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:42,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:42,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:44,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:44,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:44,107 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:44,206 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:44,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:44,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:48,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:48,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 330 [2018-10-01 01:14:48,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 332 states [2018-10-01 01:14:48,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 332 interpolants. [2018-10-01 01:14:48,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:48,726 INFO L87 Difference]: Start difference. First operand 332 states and 332 transitions. Second operand 332 states. [2018-10-01 01:14:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:53,110 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-10-01 01:14:53,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 01:14:53,111 INFO L78 Accepts]: Start accepts. Automaton has 332 states. Word has length 331 [2018-10-01 01:14:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:53,112 INFO L225 Difference]: With dead ends: 335 [2018-10-01 01:14:53,112 INFO L226 Difference]: Without dead ends: 334 [2018-10-01 01:14:53,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s Time [2018-10-01 01:14:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-10-01 01:14:53,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-10-01 01:14:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-10-01 01:14:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2018-10-01 01:14:53,118 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 331 [2018-10-01 01:14:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:53,118 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2018-10-01 01:14:53,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 332 states. [2018-10-01 01:14:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2018-10-01 01:14:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-01 01:14:53,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:53,119 INFO L375 BasicCegarLoop]: trace histogram [166, 165, 1, 1] [2018-10-01 01:14:53,119 INFO L423 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:53,119 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:53,119 INFO L82 PathProgramCache]: Analyzing trace with hash -6971798, now seen corresponding path program 165 times [2018-10-01 01:14:53,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:53,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:53,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:53,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:53,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:54,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:54,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:54,675 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:14:55,001 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 166 check-sat command(s) [2018-10-01 01:14:55,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:55,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:59,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:59,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 332 [2018-10-01 01:14:59,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 334 states [2018-10-01 01:14:59,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 334 interpolants. [2018-10-01 01:14:59,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:59,305 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand 334 states. [2018-10-01 01:15:03,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:03,866 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-10-01 01:15:03,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 01:15:03,866 INFO L78 Accepts]: Start accepts. Automaton has 334 states. Word has length 333 [2018-10-01 01:15:03,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:03,867 INFO L225 Difference]: With dead ends: 337 [2018-10-01 01:15:03,867 INFO L226 Difference]: Without dead ends: 336 [2018-10-01 01:15:03,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s Time [2018-10-01 01:15:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-10-01 01:15:03,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-10-01 01:15:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-10-01 01:15:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 336 transitions. [2018-10-01 01:15:03,875 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 336 transitions. Word has length 333 [2018-10-01 01:15:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:03,875 INFO L480 AbstractCegarLoop]: Abstraction has 336 states and 336 transitions. [2018-10-01 01:15:03,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 334 states. [2018-10-01 01:15:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 336 transitions. [2018-10-01 01:15:03,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-01 01:15:03,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:03,877 INFO L375 BasicCegarLoop]: trace histogram [167, 166, 1, 1] [2018-10-01 01:15:03,877 INFO L423 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:03,877 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:03,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1890037804, now seen corresponding path program 166 times [2018-10-01 01:15:03,877 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:03,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:03,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:03,878 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:03,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:05,393 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:05,393 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:05,401 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:15:05,508 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:15:05,508 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:05,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:09,829 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:09,829 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 334 [2018-10-01 01:15:09,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 336 states [2018-10-01 01:15:09,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 336 interpolants. [2018-10-01 01:15:09,836 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:09,836 INFO L87 Difference]: Start difference. First operand 336 states and 336 transitions. Second operand 336 states. [2018-10-01 01:15:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:14,557 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-10-01 01:15:14,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 01:15:14,558 INFO L78 Accepts]: Start accepts. Automaton has 336 states. Word has length 335 [2018-10-01 01:15:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:14,558 INFO L225 Difference]: With dead ends: 339 [2018-10-01 01:15:14,558 INFO L226 Difference]: Without dead ends: 338 [2018-10-01 01:15:14,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time [2018-10-01 01:15:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-01 01:15:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-10-01 01:15:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-10-01 01:15:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2018-10-01 01:15:14,564 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 335 [2018-10-01 01:15:14,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:14,564 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2018-10-01 01:15:14,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 336 states. [2018-10-01 01:15:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2018-10-01 01:15:14,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-01 01:15:14,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:14,566 INFO L375 BasicCegarLoop]: trace histogram [168, 167, 1, 1] [2018-10-01 01:15:14,566 INFO L423 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:14,566 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash -444835474, now seen corresponding path program 167 times [2018-10-01 01:15:14,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:14,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:14,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:14,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:14,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:16,097 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:16,097 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:16,104 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:15:16,482 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 168 check-sat command(s) [2018-10-01 01:15:16,482 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:16,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:20,966 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:20,966 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 336 [2018-10-01 01:15:20,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 338 states [2018-10-01 01:15:20,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 338 interpolants. [2018-10-01 01:15:20,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:20,973 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 338 states. [2018-10-01 01:15:26,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:26,365 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-10-01 01:15:26,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-10-01 01:15:26,366 INFO L78 Accepts]: Start accepts. Automaton has 338 states. Word has length 337 [2018-10-01 01:15:26,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:26,366 INFO L225 Difference]: With dead ends: 341 [2018-10-01 01:15:26,366 INFO L226 Difference]: Without dead ends: 340 [2018-10-01 01:15:26,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time [2018-10-01 01:15:26,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-01 01:15:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-01 01:15:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-01 01:15:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 340 transitions. [2018-10-01 01:15:26,372 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 340 transitions. Word has length 337 [2018-10-01 01:15:26,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:26,373 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 340 transitions. [2018-10-01 01:15:26,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 338 states. [2018-10-01 01:15:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 340 transitions. [2018-10-01 01:15:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-01 01:15:26,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:26,374 INFO L375 BasicCegarLoop]: trace histogram [169, 168, 1, 1] [2018-10-01 01:15:26,374 INFO L423 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:26,374 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:26,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2009840176, now seen corresponding path program 168 times [2018-10-01 01:15:26,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:26,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:26,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:26,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:26,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:27,947 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:27,947 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:27,955 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:15:28,246 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 169 check-sat command(s) [2018-10-01 01:15:28,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:28,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:32,708 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:32,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 338 [2018-10-01 01:15:32,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 340 states [2018-10-01 01:15:32,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 340 interpolants. [2018-10-01 01:15:32,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:32,716 INFO L87 Difference]: Start difference. First operand 340 states and 340 transitions. Second operand 340 states. [2018-10-01 01:15:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:37,405 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-10-01 01:15:37,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 01:15:37,405 INFO L78 Accepts]: Start accepts. Automaton has 340 states. Word has length 339 [2018-10-01 01:15:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:37,406 INFO L225 Difference]: With dead ends: 343 [2018-10-01 01:15:37,406 INFO L226 Difference]: Without dead ends: 342 [2018-10-01 01:15:37,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time [2018-10-01 01:15:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-01 01:15:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2018-10-01 01:15:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-10-01 01:15:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 342 transitions. [2018-10-01 01:15:37,412 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 342 transitions. Word has length 339 [2018-10-01 01:15:37,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:37,412 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 342 transitions. [2018-10-01 01:15:37,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 340 states. [2018-10-01 01:15:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 342 transitions. [2018-10-01 01:15:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-10-01 01:15:37,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:37,413 INFO L375 BasicCegarLoop]: trace histogram [170, 169, 1, 1] [2018-10-01 01:15:37,413 INFO L423 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:37,413 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:37,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1278872974, now seen corresponding path program 169 times [2018-10-01 01:15:37,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:37,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:37,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:37,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:37,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:39,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:39,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:39,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:39,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:43,561 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:43,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 340 [2018-10-01 01:15:43,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 342 states [2018-10-01 01:15:43,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 342 interpolants. [2018-10-01 01:15:43,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:43,569 INFO L87 Difference]: Start difference. First operand 342 states and 342 transitions. Second operand 342 states. [2018-10-01 01:15:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:48,363 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-10-01 01:15:48,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-10-01 01:15:48,363 INFO L78 Accepts]: Start accepts. Automaton has 342 states. Word has length 341 [2018-10-01 01:15:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:48,364 INFO L225 Difference]: With dead ends: 345 [2018-10-01 01:15:48,364 INFO L226 Difference]: Without dead ends: 344 [2018-10-01 01:15:48,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time [2018-10-01 01:15:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-10-01 01:15:48,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2018-10-01 01:15:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-10-01 01:15:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2018-10-01 01:15:48,370 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 341 [2018-10-01 01:15:48,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:48,370 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2018-10-01 01:15:48,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 342 states. [2018-10-01 01:15:48,370 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2018-10-01 01:15:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-01 01:15:48,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:48,371 INFO L375 BasicCegarLoop]: trace histogram [171, 170, 1, 1] [2018-10-01 01:15:48,371 INFO L423 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:48,371 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash -636280268, now seen corresponding path program 170 times [2018-10-01 01:15:48,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:48,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:48,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:48,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:48,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:50,053 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:50,053 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:50,061 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:15:50,147 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:15:50,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:50,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:54,555 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:54,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 342 [2018-10-01 01:15:54,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 344 states [2018-10-01 01:15:54,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 344 interpolants. [2018-10-01 01:15:54,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:54,563 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand 344 states. [2018-10-01 01:16:00,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:00,184 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-10-01 01:16:00,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 01:16:00,184 INFO L78 Accepts]: Start accepts. Automaton has 344 states. Word has length 343 [2018-10-01 01:16:00,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:00,185 INFO L225 Difference]: With dead ends: 347 [2018-10-01 01:16:00,185 INFO L226 Difference]: Without dead ends: 346 [2018-10-01 01:16:00,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time [2018-10-01 01:16:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-10-01 01:16:00,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-10-01 01:16:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-10-01 01:16:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2018-10-01 01:16:00,191 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 343 [2018-10-01 01:16:00,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:00,191 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2018-10-01 01:16:00,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 344 states. [2018-10-01 01:16:00,191 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2018-10-01 01:16:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-01 01:16:00,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:00,192 INFO L375 BasicCegarLoop]: trace histogram [172, 171, 1, 1] [2018-10-01 01:16:00,192 INFO L423 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:00,192 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:00,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1579980426, now seen corresponding path program 171 times [2018-10-01 01:16:00,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:00,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:00,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:00,193 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:00,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:01,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:01,790 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:01,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:16:02,143 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 172 check-sat command(s) [2018-10-01 01:16:02,143 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:02,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:06,831 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:06,831 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 344 [2018-10-01 01:16:06,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 346 states [2018-10-01 01:16:06,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 346 interpolants. [2018-10-01 01:16:06,839 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:06,839 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand 346 states. [2018-10-01 01:16:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:11,578 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-10-01 01:16:11,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-10-01 01:16:11,579 INFO L78 Accepts]: Start accepts. Automaton has 346 states. Word has length 345 [2018-10-01 01:16:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:11,579 INFO L225 Difference]: With dead ends: 349 [2018-10-01 01:16:11,579 INFO L226 Difference]: Without dead ends: 348 [2018-10-01 01:16:11,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s Time [2018-10-01 01:16:11,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-10-01 01:16:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-10-01 01:16:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-10-01 01:16:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2018-10-01 01:16:11,588 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 345 [2018-10-01 01:16:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:11,589 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2018-10-01 01:16:11,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 346 states. [2018-10-01 01:16:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2018-10-01 01:16:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-01 01:16:11,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:11,591 INFO L375 BasicCegarLoop]: trace histogram [173, 172, 1, 1] [2018-10-01 01:16:11,591 INFO L423 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:11,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:11,591 INFO L82 PathProgramCache]: Analyzing trace with hash 2057234488, now seen corresponding path program 172 times [2018-10-01 01:16:11,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:11,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:11,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:11,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:11,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:13,300 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:13,300 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:13,307 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:16:13,416 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:16:13,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:13,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:18,183 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:18,183 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 346 [2018-10-01 01:16:18,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 348 states [2018-10-01 01:16:18,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 348 interpolants. [2018-10-01 01:16:18,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:18,190 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand 348 states. [2018-10-01 01:16:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:23,483 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-10-01 01:16:23,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 01:16:23,483 INFO L78 Accepts]: Start accepts. Automaton has 348 states. Word has length 347 [2018-10-01 01:16:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:23,484 INFO L225 Difference]: With dead ends: 351 [2018-10-01 01:16:23,484 INFO L226 Difference]: Without dead ends: 350 [2018-10-01 01:16:23,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s Time [2018-10-01 01:16:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-10-01 01:16:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2018-10-01 01:16:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-10-01 01:16:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2018-10-01 01:16:23,490 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 347 [2018-10-01 01:16:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:23,490 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2018-10-01 01:16:23,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 348 states. [2018-10-01 01:16:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2018-10-01 01:16:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-01 01:16:23,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:23,491 INFO L375 BasicCegarLoop]: trace histogram [174, 173, 1, 1] [2018-10-01 01:16:23,491 INFO L423 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:23,492 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:23,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1317387898, now seen corresponding path program 173 times [2018-10-01 01:16:23,492 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:23,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:23,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:23,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:23,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:25,145 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:25,145 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:25,152 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:16:25,565 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 174 check-sat command(s) [2018-10-01 01:16:25,565 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:25,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:30,075 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:30,076 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 348 [2018-10-01 01:16:30,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 350 states [2018-10-01 01:16:30,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 350 interpolants. [2018-10-01 01:16:30,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:30,083 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand 350 states. Received shutdown request... [2018-10-01 01:16:35,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 01:16:35,336 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 01:16:35,341 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 01:16:35,342 INFO L202 PluginConnector]: Adding new model LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 01:16:35 BoogieIcfgContainer [2018-10-01 01:16:35,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 01:16:35,343 INFO L168 Benchmark]: Toolchain (without parser) took 800581.58 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 631.2 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 34.8 MB). Peak memory consumption was 666.1 MB. Max. memory is 7.1 GB. [2018-10-01 01:16:35,344 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:16:35,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.07 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:16:35,345 INFO L168 Benchmark]: Boogie Preprocessor took 23.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:16:35,345 INFO L168 Benchmark]: RCFGBuilder took 271.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 01:16:35,346 INFO L168 Benchmark]: TraceAbstraction took 800240.66 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 631.2 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 13.7 MB). Peak memory consumption was 644.9 MB. Max. memory is 7.1 GB. [2018-10-01 01:16:35,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.07 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 271.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 800240.66 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 631.2 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 13.7 MB). Peak memory consumption was 644.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 16]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 16). Cancelled while BasicCegarLoop was constructing difference of abstraction (350states) and FLOYD_HOARE automaton (currently 168 states, 350 states before enhancement), while ReachableStatesComputation was computing reachable states (332 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 800.1s OverallTime, 174 OverallIterations, 174 TraceHistogramMax, 332.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 349 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 56712 SolverSat, 581 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45673 GetRequests, 15224 SyntacticMatches, 0 SemanticMatches, 30449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 401.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=350occurred in iteration=173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 173 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 22.9s SatisfiabilityAnalysisTime, 427.3s InterpolantComputationTime, 61245 NumberOfCodeBlocks, 61245 NumberOfCodeBlocksAsserted, 7945 NumberOfCheckSat, 60898 ConstructedInterpolants, 0 QuantifiedInterpolants, 85016372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 61588 ConjunctsInSsa, 15570 ConjunctsInUnsatCore, 347 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3511900 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LexIndexValue-Pointer-Reduced.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_01-16-35-358.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LexIndexValue-Pointer-Reduced.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_01-16-35-358.csv Completed graceful shutdown