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/real-life/GateController.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 00:24:34,717 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:24:34,719 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:24:34,731 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 00:24:34,764 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-01 00:24:34,779 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:24:34,779 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:24:34,780 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:24:34,780 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:24:34,781 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:24:34,781 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:24:34,781 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:24:34,782 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:24:34,782 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:24:34,782 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:24:34,782 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:24:34,782 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:24:34,783 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:24:34,783 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:24:34,783 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:24:34,783 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:24:34,783 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:24:34,784 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:24:34,784 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:24:34,784 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:24:34,784 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:24:34,784 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:24:34,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:24:34,785 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:24:34,785 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:24:34,785 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:24:34,785 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:24:34,786 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:24:34,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:24:34,786 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:24:34,786 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:24:34,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:24:34,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:24:34,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:24:34,866 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:24:34,867 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:24:34,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl [2018-10-01 00:24:34,868 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl' [2018-10-01 00:24:34,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:24:34,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:24:34,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:24:34,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:24:34,922 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:24:34,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... [2018-10-01 00:24:34,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... [2018-10-01 00:24:34,963 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-01 00:24:34,963 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-01 00:24:34,963 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-01 00:24:34,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:24:34,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:24:34,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:24:34,967 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:24:34,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... [2018-10-01 00:24:34,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... [2018-10-01 00:24:34,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... [2018-10-01 00:24:34,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... [2018-10-01 00:24:34,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... [2018-10-01 00:24:34,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... [2018-10-01 00:24:34,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... [2018-10-01 00:24:34,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:24:34,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:24:34,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:24:34,993 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:24:34,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:24:35,072 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-10-01 00:24:35,072 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-10-01 00:24:35,073 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-10-01 00:24:35,429 INFO L345 CfgBuilder]: Using library mode [2018-10-01 00:24:35,430 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:24:35 BoogieIcfgContainer [2018-10-01 00:24:35,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:24:35,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:24:35,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:24:35,436 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:24:35,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:24:34" (1/2) ... [2018-10-01 00:24:35,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea6650 and model type GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:24:35, skipping insertion in model container [2018-10-01 00:24:35,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:24:35" (2/2) ... [2018-10-01 00:24:35,443 INFO L112 eAbstractionObserver]: Analyzing ICFG GateController.bpl [2018-10-01 00:24:35,453 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:24:35,460 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:24:35,507 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:24:35,508 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:24:35,508 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:24:35,508 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:24:35,509 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:24:35,509 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:24:35,509 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:24:35,509 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:24:35,509 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:24:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-01 00:24:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-01 00:24:35,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:35,532 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-01 00:24:35,533 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:35,539 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:35,540 INFO L82 PathProgramCache]: Analyzing trace with hash 30432, now seen corresponding path program 1 times [2018-10-01 00:24:35,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:35,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:35,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:35,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:24:35,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:35,692 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:24:35,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:24:35,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:24:35,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:24:35,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:35,717 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-01 00:24:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:35,905 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-10-01 00:24:35,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:24:35,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-01 00:24:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:35,934 INFO L225 Difference]: With dead ends: 19 [2018-10-01 00:24:35,934 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:24:35,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:24:35,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:24:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-10-01 00:24:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 00:24:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-10-01 00:24:35,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 3 [2018-10-01 00:24:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:35,980 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-10-01 00:24:35,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:24:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-10-01 00:24:35,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:24:35,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:35,981 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-01 00:24:35,981 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:35,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:35,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1953617644, now seen corresponding path program 1 times [2018-10-01 00:24:35,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:35,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:35,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:35,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:24:35,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:36,082 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:36,082 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:36,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:24:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:36,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:36,367 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:36,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-01 00:24:36,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:24:36,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:24:36,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:36,369 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 8 states. [2018-10-01 00:24:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:36,798 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-10-01 00:24:36,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:24:36,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-01 00:24:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:36,801 INFO L225 Difference]: With dead ends: 21 [2018-10-01 00:24:36,801 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 00:24:36,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:24:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 00:24:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-10-01 00:24:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 00:24:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-10-01 00:24:36,812 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-10-01 00:24:36,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:36,812 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-10-01 00:24:36,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:24:36,813 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-10-01 00:24:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:24:36,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:36,814 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-01 00:24:36,815 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:36,815 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:36,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1953558062, now seen corresponding path program 1 times [2018-10-01 00:24:36,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:36,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:36,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:36,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:24:36,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:36,872 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:24:36,872 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:24:36,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:24:36,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:24:36,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:36,874 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2018-10-01 00:24:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:36,938 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-10-01 00:24:36,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:24:36,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-01 00:24:36,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:36,941 INFO L225 Difference]: With dead ends: 21 [2018-10-01 00:24:36,941 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 00:24:36,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:24:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 00:24:36,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 00:24:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 00:24:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-10-01 00:24:36,949 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-10-01 00:24:36,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:36,949 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-10-01 00:24:36,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:24:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-10-01 00:24:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 00:24:36,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:36,953 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-10-01 00:24:36,953 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:36,953 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:36,953 INFO L82 PathProgramCache]: Analyzing trace with hash 72785504, now seen corresponding path program 2 times [2018-10-01 00:24:36,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:36,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:36,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:36,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:24:36,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:37,082 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:37,082 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:37,097 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:24:37,116 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:24:37,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:37,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:37,586 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:37,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-01 00:24:37,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:24:37,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:24:37,587 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:37,587 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 12 states. [2018-10-01 00:24:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:38,371 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-10-01 00:24:38,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 00:24:38,371 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-10-01 00:24:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:38,372 INFO L225 Difference]: With dead ends: 25 [2018-10-01 00:24:38,372 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 00:24:38,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:24:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 00:24:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-10-01 00:24:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 00:24:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-10-01 00:24:38,378 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-10-01 00:24:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:38,378 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-10-01 00:24:38,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:24:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-10-01 00:24:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 00:24:38,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:38,380 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-10-01 00:24:38,380 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:38,380 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:38,380 INFO L82 PathProgramCache]: Analyzing trace with hash 491282284, now seen corresponding path program 3 times [2018-10-01 00:24:38,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:38,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:38,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:38,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:38,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:38,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:38,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:38,542 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:24:38,572 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-01 00:24:38,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:38,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:38,957 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:38,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-10-01 00:24:38,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:24:38,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:24:38,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:38,959 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 16 states. [2018-10-01 00:24:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:39,222 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-10-01 00:24:39,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 00:24:39,224 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-10-01 00:24:39,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:39,225 INFO L225 Difference]: With dead ends: 30 [2018-10-01 00:24:39,225 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 00:24:39,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:24:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 00:24:39,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-10-01 00:24:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-01 00:24:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-10-01 00:24:39,230 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2018-10-01 00:24:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:39,231 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-10-01 00:24:39,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:24:39,231 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-10-01 00:24:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 00:24:39,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:39,232 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-10-01 00:24:39,232 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:39,233 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:39,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1589732832, now seen corresponding path program 4 times [2018-10-01 00:24:39,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:39,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:39,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:39,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:39,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:39,445 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:39,445 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:39,455 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:24:39,475 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:24:39,476 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:39,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:39,901 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:39,901 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-10-01 00:24:39,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:24:39,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:24:39,903 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:39,903 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 20 states. [2018-10-01 00:24:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:40,482 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-10-01 00:24:40,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 00:24:40,482 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-10-01 00:24:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:40,484 INFO L225 Difference]: With dead ends: 35 [2018-10-01 00:24:40,484 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 00:24:40,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:24:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 00:24:40,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-10-01 00:24:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 00:24:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2018-10-01 00:24:40,490 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2018-10-01 00:24:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:40,490 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2018-10-01 00:24:40,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:24:40,491 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2018-10-01 00:24:40,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 00:24:40,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:40,492 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-10-01 00:24:40,492 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:40,492 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:40,492 INFO L82 PathProgramCache]: Analyzing trace with hash 602818540, now seen corresponding path program 5 times [2018-10-01 00:24:40,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:40,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:40,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:40,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:40,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:40,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:40,633 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:40,643 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:24:40,659 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-01 00:24:40,659 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:40,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:41,698 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:41,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-10-01 00:24:41,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:24:41,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:24:41,699 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:41,700 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 24 states. [2018-10-01 00:24:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:42,351 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2018-10-01 00:24:42,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 00:24:42,351 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-10-01 00:24:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:42,353 INFO L225 Difference]: With dead ends: 40 [2018-10-01 00:24:42,353 INFO L226 Difference]: Without dead ends: 38 [2018-10-01 00:24:42,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:24:42,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-01 00:24:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-10-01 00:24:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 00:24:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-10-01 00:24:42,360 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2018-10-01 00:24:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:42,361 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-10-01 00:24:42,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:24:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-10-01 00:24:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 00:24:42,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:42,362 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-10-01 00:24:42,363 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:42,363 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:42,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1979239776, now seen corresponding path program 6 times [2018-10-01 00:24:42,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:42,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:42,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:42,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:42,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:42,579 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:42,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:42,588 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:24:42,610 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 00:24:42,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:42,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:43,212 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:43,212 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-10-01 00:24:43,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:24:43,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:24:43,213 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:43,214 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 28 states. [2018-10-01 00:24:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:43,763 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-10-01 00:24:43,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 00:24:43,764 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2018-10-01 00:24:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:43,765 INFO L225 Difference]: With dead ends: 45 [2018-10-01 00:24:43,765 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 00:24:43,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:24:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 00:24:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-10-01 00:24:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 00:24:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-10-01 00:24:43,772 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 33 [2018-10-01 00:24:43,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:43,773 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-10-01 00:24:43,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:24:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-10-01 00:24:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 00:24:43,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:43,774 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-10-01 00:24:43,774 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:43,774 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:43,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1800695700, now seen corresponding path program 7 times [2018-10-01 00:24:43,775 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:43,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:43,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:43,776 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:43,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:43,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:43,952 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:43,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:24:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:43,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:44,569 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:44,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-10-01 00:24:44,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:24:44,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:24:44,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:44,571 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 32 states. [2018-10-01 00:24:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:45,386 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-10-01 00:24:45,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 00:24:45,387 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-10-01 00:24:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:45,388 INFO L225 Difference]: With dead ends: 50 [2018-10-01 00:24:45,388 INFO L226 Difference]: Without dead ends: 48 [2018-10-01 00:24:45,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:24:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-01 00:24:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-10-01 00:24:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-01 00:24:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-10-01 00:24:45,395 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2018-10-01 00:24:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:45,395 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-10-01 00:24:45,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:24:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-10-01 00:24:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 00:24:45,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:45,397 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-10-01 00:24:45,397 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:45,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:45,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1430989600, now seen corresponding path program 8 times [2018-10-01 00:24:45,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:45,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:45,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:45,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:24:45,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:45,646 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:45,646 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:45,656 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:24:45,672 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:24:45,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:45,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:46,382 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:46,382 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-10-01 00:24:46,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:24:46,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:24:46,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:46,383 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 36 states. [2018-10-01 00:24:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:46,828 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-10-01 00:24:46,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 00:24:46,829 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-10-01 00:24:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:46,830 INFO L225 Difference]: With dead ends: 55 [2018-10-01 00:24:46,830 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 00:24:46,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:24:46,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 00:24:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-10-01 00:24:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 00:24:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-10-01 00:24:46,838 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2018-10-01 00:24:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:46,838 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-10-01 00:24:46,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:24:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-10-01 00:24:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 00:24:46,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:46,839 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-10-01 00:24:46,839 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:46,840 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:46,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1043842836, now seen corresponding path program 9 times [2018-10-01 00:24:46,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:46,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:46,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:46,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:46,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:47,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:47,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:47,026 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:24:47,069 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-01 00:24:47,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:47,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:48,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:48,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-10-01 00:24:48,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:24:48,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:24:48,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:48,098 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 40 states. [2018-10-01 00:24:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:48,635 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-10-01 00:24:48,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 00:24:48,636 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2018-10-01 00:24:48,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:48,637 INFO L225 Difference]: With dead ends: 60 [2018-10-01 00:24:48,637 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 00:24:48,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:24:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 00:24:48,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-10-01 00:24:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-01 00:24:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-10-01 00:24:48,645 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 48 [2018-10-01 00:24:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:48,645 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-10-01 00:24:48,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:24:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-10-01 00:24:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 00:24:48,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:48,648 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-10-01 00:24:48,648 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:48,648 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash -676496288, now seen corresponding path program 10 times [2018-10-01 00:24:48,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:48,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:48,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:48,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:48,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:49,364 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:49,365 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:49,372 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:24:49,413 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:24:49,414 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:49,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:50,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:50,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-10-01 00:24:50,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:24:50,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:24:50,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:50,133 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 44 states. [2018-10-01 00:24:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:50,916 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-10-01 00:24:50,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 00:24:50,917 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 53 [2018-10-01 00:24:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:50,918 INFO L225 Difference]: With dead ends: 65 [2018-10-01 00:24:50,918 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 00:24:50,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:24:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 00:24:50,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-10-01 00:24:50,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 00:24:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-10-01 00:24:50,926 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 53 [2018-10-01 00:24:50,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:50,927 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-10-01 00:24:50,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:24:50,927 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-10-01 00:24:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 00:24:50,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:50,928 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-10-01 00:24:50,928 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:50,928 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:50,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1014218388, now seen corresponding path program 11 times [2018-10-01 00:24:50,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:50,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:50,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:50,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:50,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:51,177 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:51,177 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:51,186 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:24:51,206 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-01 00:24:51,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:51,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:51,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:51,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-10-01 00:24:51,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:24:51,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:24:51,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:51,876 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 48 states. [2018-10-01 00:24:52,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:52,640 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-10-01 00:24:52,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 00:24:52,640 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 58 [2018-10-01 00:24:52,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:52,641 INFO L225 Difference]: With dead ends: 70 [2018-10-01 00:24:52,641 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 00:24:52,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:24:52,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 00:24:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-10-01 00:24:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 00:24:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2018-10-01 00:24:52,648 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 58 [2018-10-01 00:24:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:52,648 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2018-10-01 00:24:52,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:24:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2018-10-01 00:24:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 00:24:52,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:52,650 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-10-01 00:24:52,650 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:52,650 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:52,650 INFO L82 PathProgramCache]: Analyzing trace with hash -778386464, now seen corresponding path program 12 times [2018-10-01 00:24:52,651 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:52,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:52,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:52,652 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:52,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:53,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:53,218 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:53,225 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:24:53,247 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 00:24:53,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:53,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:53,954 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:53,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-10-01 00:24:53,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:24:53,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:24:53,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:53,956 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 52 states. [2018-10-01 00:24:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:54,523 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2018-10-01 00:24:54,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 00:24:54,523 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2018-10-01 00:24:54,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:54,524 INFO L225 Difference]: With dead ends: 75 [2018-10-01 00:24:54,524 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 00:24:54,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:24:54,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 00:24:54,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-10-01 00:24:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 00:24:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2018-10-01 00:24:54,531 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 63 [2018-10-01 00:24:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:54,531 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2018-10-01 00:24:54,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:24:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2018-10-01 00:24:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 00:24:54,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:54,533 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-10-01 00:24:54,533 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:54,533 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:54,533 INFO L82 PathProgramCache]: Analyzing trace with hash -130045460, now seen corresponding path program 13 times [2018-10-01 00:24:54,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:54,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:54,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:54,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:54,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:54,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:54,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:54,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:24:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:54,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:55,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:55,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-10-01 00:24:55,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:24:55,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:24:55,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:55,616 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 56 states. [2018-10-01 00:24:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:56,661 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-10-01 00:24:56,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 00:24:56,664 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 68 [2018-10-01 00:24:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:56,664 INFO L225 Difference]: With dead ends: 80 [2018-10-01 00:24:56,665 INFO L226 Difference]: Without dead ends: 78 [2018-10-01 00:24:56,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:24:56,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-01 00:24:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-10-01 00:24:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-01 00:24:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2018-10-01 00:24:56,670 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 68 [2018-10-01 00:24:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:56,671 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2018-10-01 00:24:56,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:24:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2018-10-01 00:24:56,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 00:24:56,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:56,672 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-10-01 00:24:56,672 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:56,672 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:56,673 INFO L82 PathProgramCache]: Analyzing trace with hash -415978656, now seen corresponding path program 14 times [2018-10-01 00:24:56,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:56,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:56,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:56,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:24:56,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:57,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:57,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:57,083 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:24:57,117 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:24:57,118 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:57,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:24:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:57,838 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:24:57,838 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-10-01 00:24:57,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:24:57,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:24:57,839 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:24:57,839 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 60 states. [2018-10-01 00:24:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:24:58,895 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-10-01 00:24:58,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 00:24:58,895 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 73 [2018-10-01 00:24:58,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:24:58,896 INFO L225 Difference]: With dead ends: 85 [2018-10-01 00:24:58,896 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 00:24:58,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:24:58,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 00:24:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-10-01 00:24:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 00:24:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2018-10-01 00:24:58,902 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 73 [2018-10-01 00:24:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:24:58,903 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2018-10-01 00:24:58,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:24:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-10-01 00:24:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 00:24:58,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:24:58,904 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-10-01 00:24:58,904 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:24:58,904 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:24:58,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2077592980, now seen corresponding path program 15 times [2018-10-01 00:24:58,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:24:58,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:24:58,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:58,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:24:58,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:24:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:24:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:24:59,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:24:59,967 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:24:59,974 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:24:59,996 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-01 00:24:59,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:24:59,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:00,683 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:00,683 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-10-01 00:25:00,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:25:00,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:25:00,684 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:00,684 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 64 states. [2018-10-01 00:25:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:01,526 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-10-01 00:25:01,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 00:25:01,526 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 78 [2018-10-01 00:25:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:01,527 INFO L225 Difference]: With dead ends: 90 [2018-10-01 00:25:01,527 INFO L226 Difference]: Without dead ends: 88 [2018-10-01 00:25:01,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:25:01,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-01 00:25:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-10-01 00:25:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-01 00:25:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-10-01 00:25:01,532 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 78 [2018-10-01 00:25:01,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:01,533 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-10-01 00:25:01,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:25:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-10-01 00:25:01,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 00:25:01,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:01,534 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-10-01 00:25:01,534 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:01,534 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:01,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1630745312, now seen corresponding path program 16 times [2018-10-01 00:25:01,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:01,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:01,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:01,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:01,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:01,891 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:01,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:01,906 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:01,940 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:01,940 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:01,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:02,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:02,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-10-01 00:25:02,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:25:02,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:25:02,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:02,938 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 68 states. [2018-10-01 00:25:04,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:04,192 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2018-10-01 00:25:04,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 00:25:04,192 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 83 [2018-10-01 00:25:04,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:04,193 INFO L225 Difference]: With dead ends: 95 [2018-10-01 00:25:04,193 INFO L226 Difference]: Without dead ends: 93 [2018-10-01 00:25:04,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:25:04,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-01 00:25:04,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-10-01 00:25:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-01 00:25:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-10-01 00:25:04,199 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 83 [2018-10-01 00:25:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:04,199 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-10-01 00:25:04,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:25:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-10-01 00:25:04,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 00:25:04,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:04,200 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-10-01 00:25:04,201 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:04,201 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:04,201 INFO L82 PathProgramCache]: Analyzing trace with hash -778790164, now seen corresponding path program 17 times [2018-10-01 00:25:04,201 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:04,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:04,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:04,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:04,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:04,980 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:04,980 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:04,988 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:05,017 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-01 00:25:05,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:05,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:06,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:06,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-10-01 00:25:06,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:25:06,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:25:06,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:06,159 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 72 states. [2018-10-01 00:25:07,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:07,175 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2018-10-01 00:25:07,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 00:25:07,175 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 88 [2018-10-01 00:25:07,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:07,176 INFO L225 Difference]: With dead ends: 100 [2018-10-01 00:25:07,176 INFO L226 Difference]: Without dead ends: 98 [2018-10-01 00:25:07,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:25:07,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-01 00:25:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-10-01 00:25:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-01 00:25:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2018-10-01 00:25:07,181 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 88 [2018-10-01 00:25:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:07,181 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2018-10-01 00:25:07,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:25:07,182 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2018-10-01 00:25:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-01 00:25:07,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:07,183 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-10-01 00:25:07,183 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:07,183 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:07,183 INFO L82 PathProgramCache]: Analyzing trace with hash 38689376, now seen corresponding path program 18 times [2018-10-01 00:25:07,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:07,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:07,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:07,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:07,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:07,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:07,633 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:07,640 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:07,686 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 00:25:07,686 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:07,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:08,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:08,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-10-01 00:25:08,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:25:08,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:25:08,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:08,826 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 76 states. [2018-10-01 00:25:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:10,027 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2018-10-01 00:25:10,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 00:25:10,028 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 93 [2018-10-01 00:25:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:10,028 INFO L225 Difference]: With dead ends: 105 [2018-10-01 00:25:10,028 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 00:25:10,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:25:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 00:25:10,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-10-01 00:25:10,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 00:25:10,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-10-01 00:25:10,032 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 93 [2018-10-01 00:25:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:10,032 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-10-01 00:25:10,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:25:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2018-10-01 00:25:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 00:25:10,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:10,034 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-10-01 00:25:10,034 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:10,034 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:10,034 INFO L82 PathProgramCache]: Analyzing trace with hash 281420652, now seen corresponding path program 19 times [2018-10-01 00:25:10,034 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:10,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:10,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:10,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:10,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:10,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:10,373 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:10,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:10,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:11,743 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:11,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-10-01 00:25:11,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 00:25:11,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 00:25:11,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:11,744 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 80 states. [2018-10-01 00:25:12,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:12,997 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2018-10-01 00:25:12,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 00:25:12,998 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 98 [2018-10-01 00:25:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:12,998 INFO L225 Difference]: With dead ends: 110 [2018-10-01 00:25:12,999 INFO L226 Difference]: Without dead ends: 108 [2018-10-01 00:25:12,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:25:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-01 00:25:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-10-01 00:25:13,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-01 00:25:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2018-10-01 00:25:13,003 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 98 [2018-10-01 00:25:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:13,004 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2018-10-01 00:25:13,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 00:25:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2018-10-01 00:25:13,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-01 00:25:13,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:13,005 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-10-01 00:25:13,005 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:13,005 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:13,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2025971232, now seen corresponding path program 20 times [2018-10-01 00:25:13,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:13,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:13,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:13,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:13,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:13,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:13,628 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:13,636 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:13,658 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:13,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:13,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:16,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:16,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-10-01 00:25:16,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 00:25:16,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 00:25:16,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:16,014 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 84 states. [2018-10-01 00:25:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:17,328 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-10-01 00:25:17,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 00:25:17,331 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 103 [2018-10-01 00:25:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:17,332 INFO L225 Difference]: With dead ends: 115 [2018-10-01 00:25:17,332 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 00:25:17,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 00:25:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 00:25:17,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-10-01 00:25:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 00:25:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2018-10-01 00:25:17,339 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 103 [2018-10-01 00:25:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:17,351 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2018-10-01 00:25:17,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 00:25:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2018-10-01 00:25:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 00:25:17,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:17,352 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-10-01 00:25:17,352 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:17,352 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:17,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1207497748, now seen corresponding path program 21 times [2018-10-01 00:25:17,352 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:17,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:17,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:17,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:17,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:17,807 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:17,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:17,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:17,850 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-01 00:25:17,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:17,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:18,984 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:18,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-10-01 00:25:18,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 00:25:18,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 00:25:18,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:18,986 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand 88 states. [2018-10-01 00:25:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:20,309 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-10-01 00:25:20,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 00:25:20,310 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 108 [2018-10-01 00:25:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:20,310 INFO L225 Difference]: With dead ends: 120 [2018-10-01 00:25:20,311 INFO L226 Difference]: Without dead ends: 118 [2018-10-01 00:25:20,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:25:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-01 00:25:20,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-10-01 00:25:20,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-01 00:25:20,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-10-01 00:25:20,316 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 108 [2018-10-01 00:25:20,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:20,316 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-10-01 00:25:20,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 00:25:20,317 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-10-01 00:25:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 00:25:20,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:20,318 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-10-01 00:25:20,318 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:20,318 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash 649759072, now seen corresponding path program 22 times [2018-10-01 00:25:20,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:20,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:20,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:20,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:20,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:20,724 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:20,724 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:20,732 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:20,758 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:20,758 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:20,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:21,928 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:21,929 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-10-01 00:25:21,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 00:25:21,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 00:25:21,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:21,930 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 92 states. [2018-10-01 00:25:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:23,360 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2018-10-01 00:25:23,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 00:25:23,361 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 113 [2018-10-01 00:25:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:23,361 INFO L225 Difference]: With dead ends: 125 [2018-10-01 00:25:23,361 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 00:25:23,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:25:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 00:25:23,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-10-01 00:25:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 00:25:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-10-01 00:25:23,367 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 113 [2018-10-01 00:25:23,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:23,367 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-10-01 00:25:23,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 00:25:23,367 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-10-01 00:25:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 00:25:23,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:23,368 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-10-01 00:25:23,368 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:23,368 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:23,368 INFO L82 PathProgramCache]: Analyzing trace with hash 60773484, now seen corresponding path program 23 times [2018-10-01 00:25:23,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:23,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:23,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:23,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:23,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:24,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:24,000 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:24,008 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:24,045 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-01 00:25:24,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:24,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:25,172 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:25,173 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-10-01 00:25:25,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 00:25:25,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 00:25:25,174 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:25,174 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 96 states. [2018-10-01 00:25:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:26,551 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2018-10-01 00:25:26,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 00:25:26,551 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 118 [2018-10-01 00:25:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:26,552 INFO L225 Difference]: With dead ends: 130 [2018-10-01 00:25:26,552 INFO L226 Difference]: Without dead ends: 128 [2018-10-01 00:25:26,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:25:26,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-01 00:25:26,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-10-01 00:25:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-01 00:25:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2018-10-01 00:25:26,556 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 118 [2018-10-01 00:25:26,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:26,556 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2018-10-01 00:25:26,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 00:25:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2018-10-01 00:25:26,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-01 00:25:26,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:26,557 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-10-01 00:25:26,558 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:26,558 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:26,558 INFO L82 PathProgramCache]: Analyzing trace with hash 293310688, now seen corresponding path program 24 times [2018-10-01 00:25:26,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:26,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:26,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:26,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:26,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:27,590 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:27,590 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:27,598 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:27,636 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 00:25:27,636 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:27,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:29,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:29,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-10-01 00:25:29,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 00:25:29,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 00:25:29,012 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:29,012 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 100 states. [2018-10-01 00:25:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:30,364 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2018-10-01 00:25:30,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 00:25:30,364 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 123 [2018-10-01 00:25:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:30,365 INFO L225 Difference]: With dead ends: 135 [2018-10-01 00:25:30,365 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 00:25:30,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:25:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 00:25:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-10-01 00:25:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-01 00:25:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-10-01 00:25:30,371 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 123 [2018-10-01 00:25:30,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:30,371 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-10-01 00:25:30,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 00:25:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-10-01 00:25:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 00:25:30,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:30,373 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-10-01 00:25:30,373 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:30,373 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:30,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1977023724, now seen corresponding path program 25 times [2018-10-01 00:25:30,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:30,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:30,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:30,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:30,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:30,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:30,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:30,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:30,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:32,018 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:32,018 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-10-01 00:25:32,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 00:25:32,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 00:25:32,020 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:32,020 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 104 states. [2018-10-01 00:25:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:33,871 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2018-10-01 00:25:33,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 00:25:33,872 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 128 [2018-10-01 00:25:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:33,873 INFO L225 Difference]: With dead ends: 140 [2018-10-01 00:25:33,873 INFO L226 Difference]: Without dead ends: 138 [2018-10-01 00:25:33,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:25:33,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-01 00:25:33,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-10-01 00:25:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-01 00:25:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-10-01 00:25:33,879 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 128 [2018-10-01 00:25:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:33,879 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-10-01 00:25:33,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 00:25:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-10-01 00:25:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-01 00:25:33,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:33,880 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-10-01 00:25:33,880 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:33,880 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash -231131040, now seen corresponding path program 26 times [2018-10-01 00:25:33,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:33,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:33,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:33,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:33,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:34,470 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:34,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:34,478 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:25:34,510 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:25:34,510 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:34,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:36,493 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:36,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-10-01 00:25:36,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 00:25:36,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 00:25:36,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:36,494 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 108 states. [2018-10-01 00:25:38,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:38,380 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2018-10-01 00:25:38,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 00:25:38,381 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 133 [2018-10-01 00:25:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:38,381 INFO L225 Difference]: With dead ends: 145 [2018-10-01 00:25:38,382 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 00:25:38,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:25:38,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 00:25:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-10-01 00:25:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 00:25:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2018-10-01 00:25:38,385 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 133 [2018-10-01 00:25:38,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:38,386 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2018-10-01 00:25:38,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 00:25:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2018-10-01 00:25:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 00:25:38,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:38,386 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-10-01 00:25:38,386 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:38,387 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:38,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1458963820, now seen corresponding path program 27 times [2018-10-01 00:25:38,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:38,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:38,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:38,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:38,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:39,084 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:39,084 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:39,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:25:39,144 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-01 00:25:39,144 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:39,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:40,442 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:40,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-10-01 00:25:40,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 00:25:40,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 00:25:40,444 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:40,444 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand 112 states. [2018-10-01 00:25:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:41,971 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2018-10-01 00:25:41,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 00:25:41,971 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 138 [2018-10-01 00:25:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:41,972 INFO L225 Difference]: With dead ends: 150 [2018-10-01 00:25:41,972 INFO L226 Difference]: Without dead ends: 148 [2018-10-01 00:25:41,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:25:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-01 00:25:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-10-01 00:25:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-01 00:25:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2018-10-01 00:25:41,977 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 138 [2018-10-01 00:25:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:41,978 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2018-10-01 00:25:41,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 00:25:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2018-10-01 00:25:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 00:25:41,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:41,979 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-10-01 00:25:41,979 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:41,979 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1839955936, now seen corresponding path program 28 times [2018-10-01 00:25:41,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:41,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:41,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:41,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:41,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:42,681 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:42,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:42,689 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:25:42,725 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:25:42,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:42,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:44,475 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:44,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-10-01 00:25:44,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 00:25:44,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 00:25:44,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:44,477 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 116 states. [2018-10-01 00:25:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:45,985 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2018-10-01 00:25:45,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 00:25:45,985 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 143 [2018-10-01 00:25:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:45,986 INFO L225 Difference]: With dead ends: 155 [2018-10-01 00:25:45,986 INFO L226 Difference]: Without dead ends: 153 [2018-10-01 00:25:45,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:25:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-01 00:25:45,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-10-01 00:25:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 00:25:45,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2018-10-01 00:25:45,992 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 143 [2018-10-01 00:25:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:45,993 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2018-10-01 00:25:45,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 00:25:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2018-10-01 00:25:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 00:25:45,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:45,994 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-10-01 00:25:45,994 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:45,994 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:45,994 INFO L82 PathProgramCache]: Analyzing trace with hash 893677036, now seen corresponding path program 29 times [2018-10-01 00:25:45,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:45,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:45,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:45,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:45,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:46,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:46,648 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:46,648 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:46,655 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:25:46,700 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-01 00:25:46,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:46,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:48,113 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:48,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-10-01 00:25:48,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 00:25:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 00:25:48,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:48,114 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 120 states. [2018-10-01 00:25:49,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:49,983 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2018-10-01 00:25:49,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 00:25:49,984 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 148 [2018-10-01 00:25:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:49,985 INFO L225 Difference]: With dead ends: 160 [2018-10-01 00:25:49,985 INFO L226 Difference]: Without dead ends: 158 [2018-10-01 00:25:49,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:25:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-01 00:25:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-10-01 00:25:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-01 00:25:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-10-01 00:25:49,992 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 148 [2018-10-01 00:25:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:49,992 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-10-01 00:25:49,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 00:25:49,992 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-10-01 00:25:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-01 00:25:49,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:49,993 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-10-01 00:25:49,993 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:49,994 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:49,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1567987872, now seen corresponding path program 30 times [2018-10-01 00:25:49,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:49,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:49,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:49,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:49,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:50,582 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:50,582 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:50,590 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:25:50,644 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 00:25:50,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:25:50,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:52,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:52,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-10-01 00:25:52,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 00:25:52,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 00:25:52,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:52,143 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 124 states. [2018-10-01 00:25:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:54,101 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2018-10-01 00:25:54,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 00:25:54,102 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 153 [2018-10-01 00:25:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:54,103 INFO L225 Difference]: With dead ends: 165 [2018-10-01 00:25:54,103 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 00:25:54,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:25:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 00:25:54,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-10-01 00:25:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 00:25:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2018-10-01 00:25:54,110 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 153 [2018-10-01 00:25:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:54,111 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2018-10-01 00:25:54,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 00:25:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2018-10-01 00:25:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 00:25:54,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:54,112 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-10-01 00:25:54,113 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:54,113 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:54,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168108, now seen corresponding path program 31 times [2018-10-01 00:25:54,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:54,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:54,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:54,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:25:54,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:55,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:25:55,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:25:55,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:25:55,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:25:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:25:56,630 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:25:56,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-10-01 00:25:56,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 00:25:56,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 00:25:56,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:25:56,633 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 128 states. [2018-10-01 00:25:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:25:58,752 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2018-10-01 00:25:58,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 00:25:58,753 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 158 [2018-10-01 00:25:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:25:58,754 INFO L225 Difference]: With dead ends: 170 [2018-10-01 00:25:58,754 INFO L226 Difference]: Without dead ends: 168 [2018-10-01 00:25:58,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:25:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-01 00:25:58,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-10-01 00:25:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-01 00:25:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2018-10-01 00:25:58,760 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 158 [2018-10-01 00:25:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:25:58,761 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2018-10-01 00:25:58,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 00:25:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2018-10-01 00:25:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-01 00:25:58,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:25:58,762 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-10-01 00:25:58,762 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:25:58,762 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:25:58,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1450316064, now seen corresponding path program 32 times [2018-10-01 00:25:58,763 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:25:58,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:25:58,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:58,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:25:58,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:25:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:00,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:00,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:00,083 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:00,117 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:00,117 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:00,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:01,713 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:01,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-10-01 00:26:01,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 00:26:01,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 00:26:01,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:01,716 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand 132 states. [2018-10-01 00:26:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:03,712 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2018-10-01 00:26:03,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 00:26:03,713 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 163 [2018-10-01 00:26:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:03,714 INFO L225 Difference]: With dead ends: 175 [2018-10-01 00:26:03,714 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 00:26:03,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:26:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 00:26:03,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-10-01 00:26:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 00:26:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-10-01 00:26:03,720 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 163 [2018-10-01 00:26:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:03,721 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-10-01 00:26:03,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 00:26:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-10-01 00:26:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 00:26:03,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:03,722 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-10-01 00:26:03,722 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:03,722 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:03,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2138087700, now seen corresponding path program 33 times [2018-10-01 00:26:03,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:03,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:03,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:03,723 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:03,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:04,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:04,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:04,949 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:05,006 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-01 00:26:05,006 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:05,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:06,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:06,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-10-01 00:26:06,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 00:26:06,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 00:26:06,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:06,709 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 136 states. [2018-10-01 00:26:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:08,344 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2018-10-01 00:26:08,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 00:26:08,344 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 168 [2018-10-01 00:26:08,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:08,346 INFO L225 Difference]: With dead ends: 180 [2018-10-01 00:26:08,346 INFO L226 Difference]: Without dead ends: 178 [2018-10-01 00:26:08,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:26:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-01 00:26:08,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-10-01 00:26:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-01 00:26:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2018-10-01 00:26:08,352 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 168 [2018-10-01 00:26:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:08,353 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2018-10-01 00:26:08,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 00:26:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2018-10-01 00:26:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 00:26:08,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:08,354 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-10-01 00:26:08,354 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:08,354 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:08,355 INFO L82 PathProgramCache]: Analyzing trace with hash 359536224, now seen corresponding path program 34 times [2018-10-01 00:26:08,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:08,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:08,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:08,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:08,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:09,383 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:09,383 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:09,391 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:09,430 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:09,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:09,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:11,938 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:11,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-10-01 00:26:11,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 00:26:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 00:26:11,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:11,940 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 140 states. [2018-10-01 00:26:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:14,283 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2018-10-01 00:26:14,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 00:26:14,283 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 173 [2018-10-01 00:26:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:14,284 INFO L225 Difference]: With dead ends: 185 [2018-10-01 00:26:14,284 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 00:26:14,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 00:26:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 00:26:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-10-01 00:26:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 00:26:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2018-10-01 00:26:14,288 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 173 [2018-10-01 00:26:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:14,289 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2018-10-01 00:26:14,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 00:26:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2018-10-01 00:26:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 00:26:14,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:14,290 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-10-01 00:26:14,290 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:14,290 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:14,291 INFO L82 PathProgramCache]: Analyzing trace with hash -400824468, now seen corresponding path program 35 times [2018-10-01 00:26:14,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:14,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:14,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:14,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:14,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:15,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:15,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:15,691 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:15,757 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-01 00:26:15,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:15,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:17,608 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:17,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-10-01 00:26:17,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 00:26:17,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 00:26:17,610 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:17,610 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand 144 states. [2018-10-01 00:26:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:20,276 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2018-10-01 00:26:20,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 00:26:20,276 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 178 [2018-10-01 00:26:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:20,277 INFO L225 Difference]: With dead ends: 190 [2018-10-01 00:26:20,277 INFO L226 Difference]: Without dead ends: 188 [2018-10-01 00:26:20,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 00:26:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-01 00:26:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-10-01 00:26:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-01 00:26:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2018-10-01 00:26:20,283 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 178 [2018-10-01 00:26:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:20,284 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2018-10-01 00:26:20,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 00:26:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2018-10-01 00:26:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-01 00:26:20,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:20,285 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-10-01 00:26:20,285 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:20,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:20,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1927470560, now seen corresponding path program 36 times [2018-10-01 00:26:20,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:20,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:20,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:20,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:20,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:20,947 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:20,947 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:20,955 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:21,019 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 00:26:21,019 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:21,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:23,589 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:23,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-10-01 00:26:23,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 00:26:23,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 00:26:23,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:23,591 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 148 states. [2018-10-01 00:26:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:26,345 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2018-10-01 00:26:26,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 00:26:26,345 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 183 [2018-10-01 00:26:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:26,346 INFO L225 Difference]: With dead ends: 195 [2018-10-01 00:26:26,346 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 00:26:26,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-10-01 00:26:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 00:26:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-10-01 00:26:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-01 00:26:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2018-10-01 00:26:26,352 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 183 [2018-10-01 00:26:26,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:26,353 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2018-10-01 00:26:26,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 00:26:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2018-10-01 00:26:26,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 00:26:26,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:26,354 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-10-01 00:26:26,354 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:26,354 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:26,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759660, now seen corresponding path program 37 times [2018-10-01 00:26:26,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:26,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:26,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:26,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:26,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:27,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:27,795 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:27,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:27,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:29,864 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:29,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2018-10-01 00:26:29,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 00:26:29,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 00:26:29,867 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:29,867 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 152 states. [2018-10-01 00:26:32,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:32,110 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2018-10-01 00:26:32,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 00:26:32,110 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 188 [2018-10-01 00:26:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:32,111 INFO L225 Difference]: With dead ends: 200 [2018-10-01 00:26:32,111 INFO L226 Difference]: Without dead ends: 198 [2018-10-01 00:26:32,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 00:26:32,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-01 00:26:32,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-10-01 00:26:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-01 00:26:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2018-10-01 00:26:32,118 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 188 [2018-10-01 00:26:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:32,118 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2018-10-01 00:26:32,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 00:26:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2018-10-01 00:26:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-01 00:26:32,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:32,119 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-10-01 00:26:32,120 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:32,120 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash -928758432, now seen corresponding path program 38 times [2018-10-01 00:26:32,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:32,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:32,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:32,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:32,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:33,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:33,031 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:33,038 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:33,103 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:33,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:33,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:35,922 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:35,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-10-01 00:26:35,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 00:26:35,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 00:26:35,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:35,925 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand 156 states. [2018-10-01 00:26:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:38,653 INFO L93 Difference]: Finished difference Result 205 states and 245 transitions. [2018-10-01 00:26:38,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 00:26:38,653 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 193 [2018-10-01 00:26:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:38,654 INFO L225 Difference]: With dead ends: 205 [2018-10-01 00:26:38,654 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 00:26:38,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 00:26:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 00:26:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-10-01 00:26:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 00:26:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2018-10-01 00:26:38,660 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 193 [2018-10-01 00:26:38,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:38,660 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2018-10-01 00:26:38,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 00:26:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2018-10-01 00:26:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 00:26:38,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:38,661 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-10-01 00:26:38,661 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:38,661 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:38,661 INFO L82 PathProgramCache]: Analyzing trace with hash -93644692, now seen corresponding path program 39 times [2018-10-01 00:26:38,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:38,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:38,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:38,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:38,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:41,155 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:41,155 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:41,163 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:41,229 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-01 00:26:41,229 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:41,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:43,403 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:43,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2018-10-01 00:26:43,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 00:26:43,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 00:26:43,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:43,406 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand 160 states. [2018-10-01 00:26:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:46,323 INFO L93 Difference]: Finished difference Result 210 states and 251 transitions. [2018-10-01 00:26:46,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 00:26:46,324 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 198 [2018-10-01 00:26:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:46,325 INFO L225 Difference]: With dead ends: 210 [2018-10-01 00:26:46,325 INFO L226 Difference]: Without dead ends: 208 [2018-10-01 00:26:46,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time [2018-10-01 00:26:46,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-01 00:26:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-10-01 00:26:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-01 00:26:46,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2018-10-01 00:26:46,330 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 198 [2018-10-01 00:26:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:46,330 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2018-10-01 00:26:46,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 00:26:46,331 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2018-10-01 00:26:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 00:26:46,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:46,331 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-10-01 00:26:46,332 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:46,332 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:46,332 INFO L82 PathProgramCache]: Analyzing trace with hash 392842464, now seen corresponding path program 40 times [2018-10-01 00:26:46,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:46,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:46,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:46,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:46,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:47,175 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:47,176 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:47,183 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:47,229 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:47,229 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:47,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:49,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:49,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2018-10-01 00:26:49,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 00:26:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 00:26:49,365 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:49,365 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand 164 states. [2018-10-01 00:26:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:52,340 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2018-10-01 00:26:52,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 00:26:52,341 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 203 [2018-10-01 00:26:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:52,342 INFO L225 Difference]: With dead ends: 215 [2018-10-01 00:26:52,342 INFO L226 Difference]: Without dead ends: 213 [2018-10-01 00:26:52,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:26:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-01 00:26:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-10-01 00:26:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 00:26:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2018-10-01 00:26:52,346 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 203 [2018-10-01 00:26:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:52,347 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2018-10-01 00:26:52,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 00:26:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2018-10-01 00:26:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 00:26:52,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:52,348 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-10-01 00:26:52,348 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:52,348 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:52,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1010974484, now seen corresponding path program 41 times [2018-10-01 00:26:52,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:52,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:52,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:52,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:52,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:53,134 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:53,134 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:26:53,143 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:53,209 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-01 00:26:53,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:53,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:57,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:57,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 167 [2018-10-01 00:26:57,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 00:26:57,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 00:26:57,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:57,722 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand 168 states. [2018-10-01 00:27:00,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:00,992 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2018-10-01 00:27:00,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 00:27:00,992 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 208 [2018-10-01 00:27:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:00,993 INFO L225 Difference]: With dead ends: 220 [2018-10-01 00:27:00,993 INFO L226 Difference]: Without dead ends: 218 [2018-10-01 00:27:00,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time [2018-10-01 00:27:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-01 00:27:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-10-01 00:27:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-01 00:27:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2018-10-01 00:27:01,000 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 208 [2018-10-01 00:27:01,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:01,000 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2018-10-01 00:27:01,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 00:27:01,000 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2018-10-01 00:27:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-01 00:27:01,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:01,002 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-10-01 00:27:01,002 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:01,002 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:01,002 INFO L82 PathProgramCache]: Analyzing trace with hash -638782368, now seen corresponding path program 42 times [2018-10-01 00:27:01,002 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:01,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:01,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:01,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:01,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:01,859 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:01,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:01,866 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:01,938 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 00:27:01,938 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:01,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:04,300 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:04,300 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 171 [2018-10-01 00:27:04,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 00:27:04,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 00:27:04,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:04,302 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand 172 states. [2018-10-01 00:27:07,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:07,553 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2018-10-01 00:27:07,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 00:27:07,554 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 213 [2018-10-01 00:27:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:07,555 INFO L225 Difference]: With dead ends: 225 [2018-10-01 00:27:07,555 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 00:27:07,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:27:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 00:27:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-10-01 00:27:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 00:27:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2018-10-01 00:27:07,560 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 213 [2018-10-01 00:27:07,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:07,560 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2018-10-01 00:27:07,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 00:27:07,560 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2018-10-01 00:27:07,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 00:27:07,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:07,561 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-10-01 00:27:07,561 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:07,562 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:07,562 INFO L82 PathProgramCache]: Analyzing trace with hash 372754796, now seen corresponding path program 43 times [2018-10-01 00:27:07,562 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:07,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:07,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:07,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:07,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:08,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:08,545 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:08,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:08,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:10,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:10,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 175 [2018-10-01 00:27:10,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 00:27:10,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 00:27:10,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:10,911 INFO L87 Difference]: Start difference. First operand 219 states and 262 transitions. Second operand 176 states. [2018-10-01 00:27:14,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:14,366 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2018-10-01 00:27:14,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 00:27:14,366 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 218 [2018-10-01 00:27:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:14,367 INFO L225 Difference]: With dead ends: 230 [2018-10-01 00:27:14,367 INFO L226 Difference]: Without dead ends: 228 [2018-10-01 00:27:14,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:27:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-01 00:27:14,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-10-01 00:27:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-01 00:27:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 268 transitions. [2018-10-01 00:27:14,372 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 268 transitions. Word has length 218 [2018-10-01 00:27:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:14,373 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 268 transitions. [2018-10-01 00:27:14,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 00:27:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 268 transitions. [2018-10-01 00:27:14,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-01 00:27:14,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:14,374 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-10-01 00:27:14,374 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:14,374 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:14,374 INFO L82 PathProgramCache]: Analyzing trace with hash -2065417248, now seen corresponding path program 44 times [2018-10-01 00:27:14,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:14,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:14,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:14,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:14,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:15,568 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:15,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:15,578 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:15,636 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:15,636 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:15,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:18,084 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:18,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 179 [2018-10-01 00:27:18,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 00:27:18,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 00:27:18,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:18,086 INFO L87 Difference]: Start difference. First operand 224 states and 268 transitions. Second operand 180 states. [2018-10-01 00:27:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:21,704 INFO L93 Difference]: Finished difference Result 235 states and 281 transitions. [2018-10-01 00:27:21,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 00:27:21,705 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 223 [2018-10-01 00:27:21,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:21,706 INFO L225 Difference]: With dead ends: 235 [2018-10-01 00:27:21,706 INFO L226 Difference]: Without dead ends: 233 [2018-10-01 00:27:21,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 00:27:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-01 00:27:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-10-01 00:27:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 00:27:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2018-10-01 00:27:21,713 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 223 [2018-10-01 00:27:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:21,713 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2018-10-01 00:27:21,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 00:27:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2018-10-01 00:27:21,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 00:27:21,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:21,715 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-10-01 00:27:21,715 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:21,715 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:21,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1340001812, now seen corresponding path program 45 times [2018-10-01 00:27:21,716 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:21,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:21,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:21,716 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:21,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:22,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:22,700 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:22,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:22,793 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-01 00:27:22,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:22,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:25,320 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:25,320 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 183 [2018-10-01 00:27:25,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 00:27:25,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 00:27:25,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:25,323 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand 184 states. [2018-10-01 00:27:28,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:28,087 INFO L93 Difference]: Finished difference Result 240 states and 287 transitions. [2018-10-01 00:27:28,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 00:27:28,087 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 228 [2018-10-01 00:27:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:28,088 INFO L225 Difference]: With dead ends: 240 [2018-10-01 00:27:28,089 INFO L226 Difference]: Without dead ends: 238 [2018-10-01 00:27:28,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 00:27:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-01 00:27:28,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-10-01 00:27:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-01 00:27:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2018-10-01 00:27:28,096 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 228 [2018-10-01 00:27:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:28,097 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2018-10-01 00:27:28,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 00:27:28,097 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2018-10-01 00:27:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 00:27:28,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:28,098 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-10-01 00:27:28,098 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:28,098 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:28,099 INFO L82 PathProgramCache]: Analyzing trace with hash 117973856, now seen corresponding path program 46 times [2018-10-01 00:27:28,099 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:28,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:28,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:28,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:28,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:28,974 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:28,975 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:28,984 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:29,056 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:29,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:29,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:32,045 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:32,046 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 187 [2018-10-01 00:27:32,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 00:27:32,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 00:27:32,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:32,048 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand 188 states. [2018-10-01 00:27:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:35,580 INFO L93 Difference]: Finished difference Result 245 states and 293 transitions. [2018-10-01 00:27:35,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 00:27:35,580 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 233 [2018-10-01 00:27:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:35,581 INFO L225 Difference]: With dead ends: 245 [2018-10-01 00:27:35,581 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 00:27:35,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-10-01 00:27:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 00:27:35,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-10-01 00:27:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 00:27:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2018-10-01 00:27:35,589 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 233 [2018-10-01 00:27:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:35,589 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2018-10-01 00:27:35,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 00:27:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2018-10-01 00:27:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 00:27:35,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:35,591 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-10-01 00:27:35,591 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:35,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:35,591 INFO L82 PathProgramCache]: Analyzing trace with hash 365034092, now seen corresponding path program 47 times [2018-10-01 00:27:35,592 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:35,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:35,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:35,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:35,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:36,837 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:36,837 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:36,846 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:36,933 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-01 00:27:36,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:36,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:39,709 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:39,710 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2018-10-01 00:27:39,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 00:27:39,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 00:27:39,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:39,712 INFO L87 Difference]: Start difference. First operand 239 states and 286 transitions. Second operand 192 states. [2018-10-01 00:27:42,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:42,957 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2018-10-01 00:27:42,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 00:27:42,957 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 238 [2018-10-01 00:27:42,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:42,958 INFO L225 Difference]: With dead ends: 250 [2018-10-01 00:27:42,959 INFO L226 Difference]: Without dead ends: 248 [2018-10-01 00:27:42,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time [2018-10-01 00:27:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-01 00:27:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-10-01 00:27:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-01 00:27:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2018-10-01 00:27:42,967 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 238 [2018-10-01 00:27:42,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:42,967 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2018-10-01 00:27:42,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 00:27:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2018-10-01 00:27:42,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-01 00:27:42,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:42,969 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-10-01 00:27:42,969 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:42,969 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:42,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1225829088, now seen corresponding path program 48 times [2018-10-01 00:27:42,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:42,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:42,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:42,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:42,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:43,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:43,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:43,946 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:44,032 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 00:27:44,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:44,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:46,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:46,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2018-10-01 00:27:46,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 00:27:46,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 00:27:46,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:46,827 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand 196 states. [2018-10-01 00:27:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:50,794 INFO L93 Difference]: Finished difference Result 255 states and 305 transitions. [2018-10-01 00:27:50,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 00:27:50,794 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 243 [2018-10-01 00:27:50,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:50,796 INFO L225 Difference]: With dead ends: 255 [2018-10-01 00:27:50,796 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 00:27:50,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 00:27:50,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 00:27:50,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-10-01 00:27:50,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-01 00:27:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2018-10-01 00:27:50,801 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 243 [2018-10-01 00:27:50,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:50,801 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2018-10-01 00:27:50,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 00:27:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2018-10-01 00:27:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 00:27:50,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:50,803 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-10-01 00:27:50,803 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:50,803 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:50,803 INFO L82 PathProgramCache]: Analyzing trace with hash 291644140, now seen corresponding path program 49 times [2018-10-01 00:27:50,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:50,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:50,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:50,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:50,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:51,717 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:51,717 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:51,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:51,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:54,713 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:54,713 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 199 [2018-10-01 00:27:54,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 00:27:54,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 00:27:54,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:54,716 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand 200 states. [2018-10-01 00:27:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:58,982 INFO L93 Difference]: Finished difference Result 260 states and 311 transitions. [2018-10-01 00:27:58,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 00:27:58,982 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 248 [2018-10-01 00:27:58,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:58,984 INFO L225 Difference]: With dead ends: 260 [2018-10-01 00:27:58,984 INFO L226 Difference]: Without dead ends: 258 [2018-10-01 00:27:58,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 00:27:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-01 00:27:58,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2018-10-01 00:27:58,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-01 00:27:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 304 transitions. [2018-10-01 00:27:58,992 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 304 transitions. Word has length 248 [2018-10-01 00:27:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:58,992 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 304 transitions. [2018-10-01 00:27:58,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 00:27:58,992 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 304 transitions. [2018-10-01 00:27:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-01 00:27:58,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:58,994 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1] [2018-10-01 00:27:58,994 INFO L423 AbstractCegarLoop]: === Iteration 52 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:58,994 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:58,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1380593056, now seen corresponding path program 50 times [2018-10-01 00:27:58,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:58,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:58,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:58,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:58,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:59,960 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:59,960 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:27:59,968 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:00,025 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:00,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:00,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:03,010 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:03,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 203 [2018-10-01 00:28:03,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 00:28:03,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 00:28:03,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:03,013 INFO L87 Difference]: Start difference. First operand 254 states and 304 transitions. Second operand 204 states. [2018-10-01 00:28:07,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:07,105 INFO L93 Difference]: Finished difference Result 265 states and 317 transitions. [2018-10-01 00:28:07,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 00:28:07,105 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 253 [2018-10-01 00:28:07,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:07,107 INFO L225 Difference]: With dead ends: 265 [2018-10-01 00:28:07,107 INFO L226 Difference]: Without dead ends: 263 [2018-10-01 00:28:07,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-10-01 00:28:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-01 00:28:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-10-01 00:28:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-01 00:28:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 310 transitions. [2018-10-01 00:28:07,114 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 310 transitions. Word has length 253 [2018-10-01 00:28:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:07,115 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 310 transitions. [2018-10-01 00:28:07,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 00:28:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 310 transitions. [2018-10-01 00:28:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-01 00:28:07,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:07,116 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 1, 1, 1] [2018-10-01 00:28:07,117 INFO L423 AbstractCegarLoop]: === Iteration 53 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:07,117 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash 860466028, now seen corresponding path program 51 times [2018-10-01 00:28:07,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:07,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:07,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:07,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:07,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:08,362 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:08,362 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:08,371 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:08,483 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-01 00:28:08,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:08,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:11,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:11,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 207 [2018-10-01 00:28:11,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 00:28:11,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 00:28:11,448 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:11,448 INFO L87 Difference]: Start difference. First operand 259 states and 310 transitions. Second operand 208 states. [2018-10-01 00:28:15,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:15,210 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2018-10-01 00:28:15,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 00:28:15,211 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 258 [2018-10-01 00:28:15,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:15,212 INFO L225 Difference]: With dead ends: 270 [2018-10-01 00:28:15,212 INFO L226 Difference]: Without dead ends: 268 [2018-10-01 00:28:15,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 00:28:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-10-01 00:28:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2018-10-01 00:28:15,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-01 00:28:15,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 316 transitions. [2018-10-01 00:28:15,218 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 316 transitions. Word has length 258 [2018-10-01 00:28:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:15,218 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 316 transitions. [2018-10-01 00:28:15,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 00:28:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 316 transitions. [2018-10-01 00:28:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-01 00:28:15,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:15,219 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 1, 1, 1] [2018-10-01 00:28:15,220 INFO L423 AbstractCegarLoop]: === Iteration 54 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:15,220 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:15,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1850762784, now seen corresponding path program 52 times [2018-10-01 00:28:15,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:15,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:15,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:15,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:15,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:16,192 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:16,192 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 00:28:16,199 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:16,258 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:16,258 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:16,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:19,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:19,477 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 211 [2018-10-01 00:28:19,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-10-01 00:28:19,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-10-01 00:28:19,479 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:19,479 INFO L87 Difference]: Start difference. First operand 264 states and 316 transitions. Second operand 212 states. [2018-10-01 00:28:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:24,053 INFO L93 Difference]: Finished difference Result 275 states and 329 transitions. [2018-10-01 00:28:24,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 00:28:24,053 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 263 [2018-10-01 00:28:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:24,054 INFO L225 Difference]: With dead ends: 275 [2018-10-01 00:28:24,054 INFO L226 Difference]: Without dead ends: 273 [2018-10-01 00:28:24,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 00:28:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-10-01 00:28:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2018-10-01 00:28:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-01 00:28:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 322 transitions. [2018-10-01 00:28:24,076 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 322 transitions. Word has length 263 [2018-10-01 00:28:24,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:24,076 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 322 transitions. [2018-10-01 00:28:24,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-10-01 00:28:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 322 transitions. [2018-10-01 00:28:24,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-01 00:28:24,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:24,078 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 1, 1, 1] [2018-10-01 00:28:24,078 INFO L423 AbstractCegarLoop]: === Iteration 55 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:24,078 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:24,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1371575276, now seen corresponding path program 53 times [2018-10-01 00:28:24,078 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:24,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:24,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:24,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:24,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:25,137 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:25,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:25,145 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:25,240 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-01 00:28:25,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:25,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:28,433 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:28,434 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 215 [2018-10-01 00:28:28,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-10-01 00:28:28,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-10-01 00:28:28,437 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:28,437 INFO L87 Difference]: Start difference. First operand 269 states and 322 transitions. Second operand 216 states. [2018-10-01 00:28:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:33,017 INFO L93 Difference]: Finished difference Result 280 states and 335 transitions. [2018-10-01 00:28:33,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 00:28:33,017 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 268 [2018-10-01 00:28:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:33,018 INFO L225 Difference]: With dead ends: 280 [2018-10-01 00:28:33,018 INFO L226 Difference]: Without dead ends: 278 [2018-10-01 00:28:33,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time [2018-10-01 00:28:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-10-01 00:28:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2018-10-01 00:28:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-01 00:28:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 328 transitions. [2018-10-01 00:28:33,024 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 328 transitions. Word has length 268 [2018-10-01 00:28:33,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:33,024 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 328 transitions. [2018-10-01 00:28:33,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-10-01 00:28:33,025 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 328 transitions. [2018-10-01 00:28:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-01 00:28:33,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:33,026 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 1, 1, 1] [2018-10-01 00:28:33,026 INFO L423 AbstractCegarLoop]: === Iteration 56 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:33,026 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:33,026 INFO L82 PathProgramCache]: Analyzing trace with hash -877264544, now seen corresponding path program 54 times [2018-10-01 00:28:33,026 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:33,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:33,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:33,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:33,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:34,172 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:34,172 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:34,179 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:34,295 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 00:28:34,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:34,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:37,364 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:37,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 219 [2018-10-01 00:28:37,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-10-01 00:28:37,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-10-01 00:28:37,367 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:37,367 INFO L87 Difference]: Start difference. First operand 274 states and 328 transitions. Second operand 220 states. [2018-10-01 00:28:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:42,065 INFO L93 Difference]: Finished difference Result 285 states and 341 transitions. [2018-10-01 00:28:42,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 00:28:42,065 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 273 [2018-10-01 00:28:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:42,066 INFO L225 Difference]: With dead ends: 285 [2018-10-01 00:28:42,066 INFO L226 Difference]: Without dead ends: 283 [2018-10-01 00:28:42,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 00:28:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-01 00:28:42,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-10-01 00:28:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-01 00:28:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 334 transitions. [2018-10-01 00:28:42,074 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 334 transitions. Word has length 273 [2018-10-01 00:28:42,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:42,074 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 334 transitions. [2018-10-01 00:28:42,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-10-01 00:28:42,075 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 334 transitions. [2018-10-01 00:28:42,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-01 00:28:42,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:42,076 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 1, 1, 1] [2018-10-01 00:28:42,077 INFO L423 AbstractCegarLoop]: === Iteration 57 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:42,077 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:42,077 INFO L82 PathProgramCache]: Analyzing trace with hash 151968876, now seen corresponding path program 55 times [2018-10-01 00:28:42,077 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:42,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:42,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:42,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:42,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:43,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:43,128 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:43,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:43,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:46,433 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:46,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 223 [2018-10-01 00:28:46,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-10-01 00:28:46,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-10-01 00:28:46,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:46,436 INFO L87 Difference]: Start difference. First operand 279 states and 334 transitions. Second operand 224 states. [2018-10-01 00:28:50,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:50,934 INFO L93 Difference]: Finished difference Result 290 states and 347 transitions. [2018-10-01 00:28:50,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 00:28:50,934 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 278 [2018-10-01 00:28:50,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:50,936 INFO L225 Difference]: With dead ends: 290 [2018-10-01 00:28:50,936 INFO L226 Difference]: Without dead ends: 288 [2018-10-01 00:28:50,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time [2018-10-01 00:28:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-10-01 00:28:50,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2018-10-01 00:28:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-01 00:28:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 340 transitions. [2018-10-01 00:28:50,943 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 340 transitions. Word has length 278 [2018-10-01 00:28:50,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:50,944 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 340 transitions. [2018-10-01 00:28:50,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-10-01 00:28:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 340 transitions. [2018-10-01 00:28:50,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-01 00:28:50,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:50,945 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 1, 1, 1] [2018-10-01 00:28:50,946 INFO L423 AbstractCegarLoop]: === Iteration 58 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:50,946 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:50,946 INFO L82 PathProgramCache]: Analyzing trace with hash 746653920, now seen corresponding path program 56 times [2018-10-01 00:28:50,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:50,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:50,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:50,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:50,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:52,012 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:52,013 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:52,021 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:52,091 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:52,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:52,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:55,463 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:55,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 227 [2018-10-01 00:28:55,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-10-01 00:28:55,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-10-01 00:28:55,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:55,466 INFO L87 Difference]: Start difference. First operand 284 states and 340 transitions. Second operand 228 states. [2018-10-01 00:29:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:00,037 INFO L93 Difference]: Finished difference Result 295 states and 353 transitions. [2018-10-01 00:29:00,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 00:29:00,038 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 283 [2018-10-01 00:29:00,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:00,039 INFO L225 Difference]: With dead ends: 295 [2018-10-01 00:29:00,039 INFO L226 Difference]: Without dead ends: 293 [2018-10-01 00:29:00,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time [2018-10-01 00:29:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-10-01 00:29:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2018-10-01 00:29:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-10-01 00:29:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 346 transitions. [2018-10-01 00:29:00,045 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 346 transitions. Word has length 283 [2018-10-01 00:29:00,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:00,045 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 346 transitions. [2018-10-01 00:29:00,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-10-01 00:29:00,045 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 346 transitions. [2018-10-01 00:29:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-01 00:29:00,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:00,046 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 1, 1, 1] [2018-10-01 00:29:00,046 INFO L423 AbstractCegarLoop]: === Iteration 59 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:00,047 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:00,047 INFO L82 PathProgramCache]: Analyzing trace with hash 998016236, now seen corresponding path program 57 times [2018-10-01 00:29:00,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:00,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:00,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:00,048 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:00,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:01,160 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:01,160 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:01,167 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:01,272 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-01 00:29:01,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:01,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:04,806 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:04,807 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 231 [2018-10-01 00:29:04,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-10-01 00:29:04,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-10-01 00:29:04,809 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:04,809 INFO L87 Difference]: Start difference. First operand 289 states and 346 transitions. Second operand 232 states. [2018-10-01 00:29:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:09,524 INFO L93 Difference]: Finished difference Result 300 states and 359 transitions. [2018-10-01 00:29:09,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 00:29:09,525 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 288 [2018-10-01 00:29:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:09,526 INFO L225 Difference]: With dead ends: 300 [2018-10-01 00:29:09,526 INFO L226 Difference]: Without dead ends: 298 [2018-10-01 00:29:09,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time [2018-10-01 00:29:09,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-01 00:29:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2018-10-01 00:29:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-01 00:29:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 352 transitions. [2018-10-01 00:29:09,535 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 352 transitions. Word has length 288 [2018-10-01 00:29:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:09,535 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 352 transitions. [2018-10-01 00:29:09,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-10-01 00:29:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 352 transitions. [2018-10-01 00:29:09,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-01 00:29:09,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:09,537 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 1, 1, 1] [2018-10-01 00:29:09,538 INFO L423 AbstractCegarLoop]: === Iteration 60 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:09,538 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:09,538 INFO L82 PathProgramCache]: Analyzing trace with hash -20402080, now seen corresponding path program 58 times [2018-10-01 00:29:09,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:09,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:09,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:09,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:09,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:10,995 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:10,995 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:11,005 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:29:11,069 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:29:11,070 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:11,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:14,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:14,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 235 [2018-10-01 00:29:14,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-10-01 00:29:14,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-10-01 00:29:14,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:14,804 INFO L87 Difference]: Start difference. First operand 294 states and 352 transitions. Second operand 236 states. [2018-10-01 00:29:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:20,026 INFO L93 Difference]: Finished difference Result 305 states and 365 transitions. [2018-10-01 00:29:20,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 00:29:20,027 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 293 [2018-10-01 00:29:20,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:20,028 INFO L225 Difference]: With dead ends: 305 [2018-10-01 00:29:20,028 INFO L226 Difference]: Without dead ends: 303 [2018-10-01 00:29:20,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time [2018-10-01 00:29:20,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-01 00:29:20,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-10-01 00:29:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-01 00:29:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 358 transitions. [2018-10-01 00:29:20,036 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 358 transitions. Word has length 293 [2018-10-01 00:29:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:20,036 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 358 transitions. [2018-10-01 00:29:20,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-10-01 00:29:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 358 transitions. [2018-10-01 00:29:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-01 00:29:20,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:20,038 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 1, 1, 1] [2018-10-01 00:29:20,039 INFO L423 AbstractCegarLoop]: === Iteration 61 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:20,039 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1856926356, now seen corresponding path program 59 times [2018-10-01 00:29:20,039 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:20,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:20,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:20,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:20,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:21,235 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:21,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:21,242 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:21,367 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-01 00:29:21,367 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:21,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:25,126 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:25,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 239 [2018-10-01 00:29:25,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-10-01 00:29:25,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-10-01 00:29:25,129 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:25,129 INFO L87 Difference]: Start difference. First operand 299 states and 358 transitions. Second operand 240 states. [2018-10-01 00:29:30,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:30,663 INFO L93 Difference]: Finished difference Result 310 states and 371 transitions. [2018-10-01 00:29:30,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 00:29:30,663 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 298 [2018-10-01 00:29:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:30,664 INFO L225 Difference]: With dead ends: 310 [2018-10-01 00:29:30,665 INFO L226 Difference]: Without dead ends: 308 [2018-10-01 00:29:30,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time [2018-10-01 00:29:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-10-01 00:29:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2018-10-01 00:29:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-10-01 00:29:30,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 364 transitions. [2018-10-01 00:29:30,670 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 364 transitions. Word has length 298 [2018-10-01 00:29:30,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:30,671 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 364 transitions. [2018-10-01 00:29:30,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-10-01 00:29:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 364 transitions. [2018-10-01 00:29:30,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-01 00:29:30,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:30,672 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 1, 1, 1] [2018-10-01 00:29:30,672 INFO L423 AbstractCegarLoop]: === Iteration 62 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:30,672 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:30,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2025523232, now seen corresponding path program 60 times [2018-10-01 00:29:30,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:30,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:30,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:30,673 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:30,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:31,879 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:31,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:31,888 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:32,004 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 00:29:32,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:32,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:35,895 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:35,895 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 243 [2018-10-01 00:29:35,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-10-01 00:29:35,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-10-01 00:29:35,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:35,898 INFO L87 Difference]: Start difference. First operand 304 states and 364 transitions. Second operand 244 states. [2018-10-01 00:29:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:41,879 INFO L93 Difference]: Finished difference Result 315 states and 377 transitions. [2018-10-01 00:29:41,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 00:29:41,880 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 303 [2018-10-01 00:29:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:41,881 INFO L225 Difference]: With dead ends: 315 [2018-10-01 00:29:41,881 INFO L226 Difference]: Without dead ends: 313 [2018-10-01 00:29:41,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time [2018-10-01 00:29:41,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-10-01 00:29:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2018-10-01 00:29:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-10-01 00:29:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2018-10-01 00:29:41,887 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 303 [2018-10-01 00:29:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:41,887 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2018-10-01 00:29:41,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-10-01 00:29:41,887 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2018-10-01 00:29:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-01 00:29:41,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:41,889 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 61, 1, 1, 1] [2018-10-01 00:29:41,889 INFO L423 AbstractCegarLoop]: === Iteration 63 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:41,889 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash -120195604, now seen corresponding path program 61 times [2018-10-01 00:29:41,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:41,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:41,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:41,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:41,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:43,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:43,086 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:43,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:43,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:47,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:47,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 247 [2018-10-01 00:29:47,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-10-01 00:29:47,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-10-01 00:29:47,122 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:47,122 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand 248 states. [2018-10-01 00:29:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:53,176 INFO L93 Difference]: Finished difference Result 320 states and 383 transitions. [2018-10-01 00:29:53,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 00:29:53,177 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 308 [2018-10-01 00:29:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:53,178 INFO L225 Difference]: With dead ends: 320 [2018-10-01 00:29:53,178 INFO L226 Difference]: Without dead ends: 318 [2018-10-01 00:29:53,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time [2018-10-01 00:29:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-10-01 00:29:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 314. [2018-10-01 00:29:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-10-01 00:29:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 376 transitions. [2018-10-01 00:29:53,186 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 376 transitions. Word has length 308 [2018-10-01 00:29:53,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:53,186 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 376 transitions. [2018-10-01 00:29:53,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-10-01 00:29:53,186 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 376 transitions. [2018-10-01 00:29:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-01 00:29:53,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:53,188 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 62, 1, 1, 1] [2018-10-01 00:29:53,188 INFO L423 AbstractCegarLoop]: === Iteration 64 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:53,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2068979872, now seen corresponding path program 62 times [2018-10-01 00:29:53,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:53,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:53,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:53,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:53,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:54,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:54,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:29:54,428 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:54,509 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:54,509 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:54,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:58,531 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:58,531 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 251 [2018-10-01 00:29:58,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-10-01 00:29:58,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-10-01 00:29:58,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:58,535 INFO L87 Difference]: Start difference. First operand 314 states and 376 transitions. Second operand 252 states. [2018-10-01 00:30:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:04,586 INFO L93 Difference]: Finished difference Result 325 states and 389 transitions. [2018-10-01 00:30:04,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 00:30:04,586 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 313 [2018-10-01 00:30:04,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:04,587 INFO L225 Difference]: With dead ends: 325 [2018-10-01 00:30:04,587 INFO L226 Difference]: Without dead ends: 323 [2018-10-01 00:30:04,587 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time [2018-10-01 00:30:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-01 00:30:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-10-01 00:30:04,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-01 00:30:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 382 transitions. [2018-10-01 00:30:04,593 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 382 transitions. Word has length 313 [2018-10-01 00:30:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:04,594 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 382 transitions. [2018-10-01 00:30:04,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-10-01 00:30:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 382 transitions. [2018-10-01 00:30:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-01 00:30:04,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:04,596 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1] [2018-10-01 00:30:04,596 INFO L423 AbstractCegarLoop]: === Iteration 65 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:04,596 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:04,596 INFO L82 PathProgramCache]: Analyzing trace with hash 642891372, now seen corresponding path program 63 times [2018-10-01 00:30:04,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:04,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:04,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:04,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:04,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:06,078 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:06,078 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:06,089 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:30:06,224 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-01 00:30:06,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:06,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:10,184 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:10,184 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 255 [2018-10-01 00:30:10,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-10-01 00:30:10,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-10-01 00:30:10,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:10,188 INFO L87 Difference]: Start difference. First operand 319 states and 382 transitions. Second operand 256 states. [2018-10-01 00:30:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:16,737 INFO L93 Difference]: Finished difference Result 330 states and 395 transitions. [2018-10-01 00:30:16,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 00:30:16,738 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 318 [2018-10-01 00:30:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:16,739 INFO L225 Difference]: With dead ends: 330 [2018-10-01 00:30:16,739 INFO L226 Difference]: Without dead ends: 328 [2018-10-01 00:30:16,739 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time [2018-10-01 00:30:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-10-01 00:30:16,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2018-10-01 00:30:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-10-01 00:30:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2018-10-01 00:30:16,760 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 318 [2018-10-01 00:30:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:16,761 INFO L480 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2018-10-01 00:30:16,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-10-01 00:30:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2018-10-01 00:30:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-01 00:30:16,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:16,762 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 64, 1, 1, 1] [2018-10-01 00:30:16,762 INFO L423 AbstractCegarLoop]: === Iteration 66 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:16,762 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:16,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1346672928, now seen corresponding path program 64 times [2018-10-01 00:30:16,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:16,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:16,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:16,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:16,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:18,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:18,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:18,026 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:30:18,101 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:30:18,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:18,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:22,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:22,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 259 [2018-10-01 00:30:22,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 260 states [2018-10-01 00:30:22,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2018-10-01 00:30:22,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:22,258 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 260 states. [2018-10-01 00:30:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:28,386 INFO L93 Difference]: Finished difference Result 335 states and 401 transitions. [2018-10-01 00:30:28,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 00:30:28,387 INFO L78 Accepts]: Start accepts. Automaton has 260 states. Word has length 323 [2018-10-01 00:30:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:28,388 INFO L225 Difference]: With dead ends: 335 [2018-10-01 00:30:28,388 INFO L226 Difference]: Without dead ends: 333 [2018-10-01 00:30:28,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time [2018-10-01 00:30:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-01 00:30:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2018-10-01 00:30:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-10-01 00:30:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 394 transitions. [2018-10-01 00:30:28,394 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 394 transitions. Word has length 323 [2018-10-01 00:30:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:28,394 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 394 transitions. [2018-10-01 00:30:28,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 260 states. [2018-10-01 00:30:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 394 transitions. [2018-10-01 00:30:28,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-01 00:30:28,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:28,396 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 65, 1, 1, 1] [2018-10-01 00:30:28,397 INFO L423 AbstractCegarLoop]: === Iteration 67 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:28,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:28,397 INFO L82 PathProgramCache]: Analyzing trace with hash 336389868, now seen corresponding path program 65 times [2018-10-01 00:30:28,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:28,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:28,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:28,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:28,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:29,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:29,795 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:29,804 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:30:29,934 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-01 00:30:29,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:29,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:34,064 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:34,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 263 [2018-10-01 00:30:34,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 264 states [2018-10-01 00:30:34,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2018-10-01 00:30:34,068 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:34,068 INFO L87 Difference]: Start difference. First operand 329 states and 394 transitions. Second operand 264 states. [2018-10-01 00:30:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:41,258 INFO L93 Difference]: Finished difference Result 340 states and 407 transitions. [2018-10-01 00:30:41,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 00:30:41,259 INFO L78 Accepts]: Start accepts. Automaton has 264 states. Word has length 328 [2018-10-01 00:30:41,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:41,260 INFO L225 Difference]: With dead ends: 340 [2018-10-01 00:30:41,260 INFO L226 Difference]: Without dead ends: 338 [2018-10-01 00:30:41,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time [2018-10-01 00:30:41,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-01 00:30:41,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2018-10-01 00:30:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-10-01 00:30:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 400 transitions. [2018-10-01 00:30:41,266 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 400 transitions. Word has length 328 [2018-10-01 00:30:41,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:41,267 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 400 transitions. [2018-10-01 00:30:41,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 264 states. [2018-10-01 00:30:41,267 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 400 transitions. [2018-10-01 00:30:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-01 00:30:41,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:41,269 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 66, 1, 1, 1] [2018-10-01 00:30:41,269 INFO L423 AbstractCegarLoop]: === Iteration 68 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:41,269 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:41,269 INFO L82 PathProgramCache]: Analyzing trace with hash 992317024, now seen corresponding path program 66 times [2018-10-01 00:30:41,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:41,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:41,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:41,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:41,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:42,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:42,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:42,722 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:30:42,852 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 00:30:42,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:42,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:47,172 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:47,172 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 267 [2018-10-01 00:30:47,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 268 states [2018-10-01 00:30:47,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 268 interpolants. [2018-10-01 00:30:47,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:47,176 INFO L87 Difference]: Start difference. First operand 334 states and 400 transitions. Second operand 268 states. [2018-10-01 00:30:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:54,042 INFO L93 Difference]: Finished difference Result 345 states and 413 transitions. [2018-10-01 00:30:54,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 00:30:54,042 INFO L78 Accepts]: Start accepts. Automaton has 268 states. Word has length 333 [2018-10-01 00:30:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:54,044 INFO L225 Difference]: With dead ends: 345 [2018-10-01 00:30:54,044 INFO L226 Difference]: Without dead ends: 343 [2018-10-01 00:30:54,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s Time [2018-10-01 00:30:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-01 00:30:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-10-01 00:30:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-01 00:30:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 406 transitions. [2018-10-01 00:30:54,050 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 406 transitions. Word has length 333 [2018-10-01 00:30:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:54,050 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 406 transitions. [2018-10-01 00:30:54,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 268 states. [2018-10-01 00:30:54,050 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 406 transitions. [2018-10-01 00:30:54,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-01 00:30:54,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:54,052 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 67, 1, 1, 1] [2018-10-01 00:30:54,052 INFO L423 AbstractCegarLoop]: === Iteration 69 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:54,052 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:54,052 INFO L82 PathProgramCache]: Analyzing trace with hash -2108723348, now seen corresponding path program 67 times [2018-10-01 00:30:54,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:54,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:54,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:54,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:54,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:55,490 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:55,490 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:55,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:55,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:59,928 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:59,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 271 [2018-10-01 00:30:59,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 272 states [2018-10-01 00:30:59,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 272 interpolants. [2018-10-01 00:30:59,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:59,932 INFO L87 Difference]: Start difference. First operand 339 states and 406 transitions. Second operand 272 states. [2018-10-01 00:31:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:06,903 INFO L93 Difference]: Finished difference Result 350 states and 419 transitions. [2018-10-01 00:31:06,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 00:31:06,904 INFO L78 Accepts]: Start accepts. Automaton has 272 states. Word has length 338 [2018-10-01 00:31:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:06,905 INFO L225 Difference]: With dead ends: 350 [2018-10-01 00:31:06,905 INFO L226 Difference]: Without dead ends: 348 [2018-10-01 00:31:06,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s Time [2018-10-01 00:31:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-10-01 00:31:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2018-10-01 00:31:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-10-01 00:31:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 412 transitions. [2018-10-01 00:31:06,912 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 412 transitions. Word has length 338 [2018-10-01 00:31:06,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:06,912 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 412 transitions. [2018-10-01 00:31:06,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 272 states. [2018-10-01 00:31:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 412 transitions. [2018-10-01 00:31:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-01 00:31:06,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:06,913 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 68, 1, 1, 1] [2018-10-01 00:31:06,913 INFO L423 AbstractCegarLoop]: === Iteration 70 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:06,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1403278816, now seen corresponding path program 68 times [2018-10-01 00:31:06,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:06,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:06,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:06,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:06,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:08,309 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:08,309 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:08,318 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:31:08,397 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:31:08,397 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:08,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:12,757 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:12,757 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 275 [2018-10-01 00:31:12,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 276 states [2018-10-01 00:31:12,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 276 interpolants. [2018-10-01 00:31:12,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:12,761 INFO L87 Difference]: Start difference. First operand 344 states and 412 transitions. Second operand 276 states. [2018-10-01 00:31:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:20,638 INFO L93 Difference]: Finished difference Result 355 states and 425 transitions. [2018-10-01 00:31:20,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 00:31:20,639 INFO L78 Accepts]: Start accepts. Automaton has 276 states. Word has length 343 [2018-10-01 00:31:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:20,640 INFO L225 Difference]: With dead ends: 355 [2018-10-01 00:31:20,640 INFO L226 Difference]: Without dead ends: 353 [2018-10-01 00:31:20,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time [2018-10-01 00:31:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-10-01 00:31:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2018-10-01 00:31:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-10-01 00:31:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 418 transitions. [2018-10-01 00:31:20,646 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 418 transitions. Word has length 343 [2018-10-01 00:31:20,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:20,646 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 418 transitions. [2018-10-01 00:31:20,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 276 states. [2018-10-01 00:31:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 418 transitions. [2018-10-01 00:31:20,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-01 00:31:20,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:20,648 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 69, 1, 1, 1] [2018-10-01 00:31:20,648 INFO L423 AbstractCegarLoop]: === Iteration 71 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:20,648 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:20,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2002868204, now seen corresponding path program 69 times [2018-10-01 00:31:20,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:20,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:20,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:20,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:20,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 0 proven. 11799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:22,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:22,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:22,328 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:31:22,471 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-01 00:31:22,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:22,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 0 proven. 11799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:27,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:27,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 279 [2018-10-01 00:31:27,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 280 states [2018-10-01 00:31:27,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 280 interpolants. [2018-10-01 00:31:27,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:27,059 INFO L87 Difference]: Start difference. First operand 349 states and 418 transitions. Second operand 280 states. [2018-10-01 00:31:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:35,295 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2018-10-01 00:31:35,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 00:31:35,296 INFO L78 Accepts]: Start accepts. Automaton has 280 states. Word has length 348 [2018-10-01 00:31:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:35,297 INFO L225 Difference]: With dead ends: 360 [2018-10-01 00:31:35,297 INFO L226 Difference]: Without dead ends: 358 [2018-10-01 00:31:35,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time [2018-10-01 00:31:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-10-01 00:31:35,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2018-10-01 00:31:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-10-01 00:31:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 424 transitions. [2018-10-01 00:31:35,304 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 424 transitions. Word has length 348 [2018-10-01 00:31:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:35,304 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 424 transitions. [2018-10-01 00:31:35,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 280 states. [2018-10-01 00:31:35,304 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 424 transitions. [2018-10-01 00:31:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-01 00:31:35,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:35,305 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 70, 1, 1, 1] [2018-10-01 00:31:35,306 INFO L423 AbstractCegarLoop]: === Iteration 72 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:35,306 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:35,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1611678368, now seen corresponding path program 70 times [2018-10-01 00:31:35,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:35,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:35,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:35,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:35,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 0 proven. 12145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:36,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:36,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:36,853 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:31:36,932 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:31:36,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:36,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 0 proven. 12145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:41,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:41,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 283 [2018-10-01 00:31:41,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 284 states [2018-10-01 00:31:41,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 284 interpolants. [2018-10-01 00:31:41,724 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:41,724 INFO L87 Difference]: Start difference. First operand 354 states and 424 transitions. Second operand 284 states. [2018-10-01 00:31:49,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:49,933 INFO L93 Difference]: Finished difference Result 365 states and 437 transitions. [2018-10-01 00:31:49,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 00:31:49,933 INFO L78 Accepts]: Start accepts. Automaton has 284 states. Word has length 353 [2018-10-01 00:31:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:49,935 INFO L225 Difference]: With dead ends: 365 [2018-10-01 00:31:49,935 INFO L226 Difference]: Without dead ends: 363 [2018-10-01 00:31:49,935 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time [2018-10-01 00:31:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-01 00:31:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2018-10-01 00:31:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-01 00:31:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 430 transitions. [2018-10-01 00:31:49,942 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 430 transitions. Word has length 353 [2018-10-01 00:31:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:49,942 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 430 transitions. [2018-10-01 00:31:49,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 284 states. [2018-10-01 00:31:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 430 transitions. [2018-10-01 00:31:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-01 00:31:49,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:49,943 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 71, 1, 1, 1] [2018-10-01 00:31:49,944 INFO L423 AbstractCegarLoop]: === Iteration 73 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:49,944 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:49,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1081434004, now seen corresponding path program 71 times [2018-10-01 00:31:49,944 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:49,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:49,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:49,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:49,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:51,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:51,409 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:31:51,416 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:31:51,566 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-01 00:31:51,566 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:51,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:56,448 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:56,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 287 [2018-10-01 00:31:56,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 288 states [2018-10-01 00:31:56,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 288 interpolants. [2018-10-01 00:31:56,452 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:56,452 INFO L87 Difference]: Start difference. First operand 359 states and 430 transitions. Second operand 288 states. [2018-10-01 00:32:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:04,997 INFO L93 Difference]: Finished difference Result 370 states and 443 transitions. [2018-10-01 00:32:04,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 00:32:04,997 INFO L78 Accepts]: Start accepts. Automaton has 288 states. Word has length 358 [2018-10-01 00:32:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:04,998 INFO L225 Difference]: With dead ends: 370 [2018-10-01 00:32:04,998 INFO L226 Difference]: Without dead ends: 368 [2018-10-01 00:32:04,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s Time [2018-10-01 00:32:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-10-01 00:32:05,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 364. [2018-10-01 00:32:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-10-01 00:32:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 436 transitions. [2018-10-01 00:32:05,005 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 436 transitions. Word has length 358 [2018-10-01 00:32:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:05,006 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 436 transitions. [2018-10-01 00:32:05,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 288 states. [2018-10-01 00:32:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 436 transitions. [2018-10-01 00:32:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-01 00:32:05,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:05,007 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 72, 1, 1, 1] [2018-10-01 00:32:05,007 INFO L423 AbstractCegarLoop]: === Iteration 74 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:05,007 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:05,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1061174048, now seen corresponding path program 72 times [2018-10-01 00:32:05,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:05,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:05,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:05,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:05,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 0 proven. 12852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:06,509 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:06,509 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:06,516 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:32:06,677 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 00:32:06,677 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:06,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 0 proven. 12852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:11,484 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:11,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 291 [2018-10-01 00:32:11,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 292 states [2018-10-01 00:32:11,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 292 interpolants. [2018-10-01 00:32:11,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:11,488 INFO L87 Difference]: Start difference. First operand 364 states and 436 transitions. Second operand 292 states. [2018-10-01 00:32:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:20,140 INFO L93 Difference]: Finished difference Result 375 states and 449 transitions. [2018-10-01 00:32:20,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 00:32:20,141 INFO L78 Accepts]: Start accepts. Automaton has 292 states. Word has length 363 [2018-10-01 00:32:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:20,142 INFO L225 Difference]: With dead ends: 375 [2018-10-01 00:32:20,142 INFO L226 Difference]: Without dead ends: 373 [2018-10-01 00:32:20,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time [2018-10-01 00:32:20,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-10-01 00:32:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 369. [2018-10-01 00:32:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-10-01 00:32:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 442 transitions. [2018-10-01 00:32:20,152 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 442 transitions. Word has length 363 [2018-10-01 00:32:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:20,152 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 442 transitions. [2018-10-01 00:32:20,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 292 states. [2018-10-01 00:32:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 442 transitions. [2018-10-01 00:32:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-01 00:32:20,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:20,154 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 73, 1, 1, 1] [2018-10-01 00:32:20,154 INFO L423 AbstractCegarLoop]: === Iteration 75 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:20,154 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:20,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1829980396, now seen corresponding path program 73 times [2018-10-01 00:32:20,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:20,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:20,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:20,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:20,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 13213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:21,743 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:21,743 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:21,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:21,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 13213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:26,788 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:26,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 295 [2018-10-01 00:32:26,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 296 states [2018-10-01 00:32:26,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 296 interpolants. [2018-10-01 00:32:26,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:26,793 INFO L87 Difference]: Start difference. First operand 369 states and 442 transitions. Second operand 296 states. [2018-10-01 00:32:34,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:34,480 INFO L93 Difference]: Finished difference Result 380 states and 455 transitions. [2018-10-01 00:32:34,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 00:32:34,480 INFO L78 Accepts]: Start accepts. Automaton has 296 states. Word has length 368 [2018-10-01 00:32:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:34,481 INFO L225 Difference]: With dead ends: 380 [2018-10-01 00:32:34,481 INFO L226 Difference]: Without dead ends: 378 [2018-10-01 00:32:34,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s Time [2018-10-01 00:32:34,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-10-01 00:32:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 374. [2018-10-01 00:32:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-10-01 00:32:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 448 transitions. [2018-10-01 00:32:34,488 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 448 transitions. Word has length 368 [2018-10-01 00:32:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:34,489 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 448 transitions. [2018-10-01 00:32:34,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 296 states. [2018-10-01 00:32:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 448 transitions. [2018-10-01 00:32:34,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-01 00:32:34,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:34,490 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 1, 1, 1] [2018-10-01 00:32:34,490 INFO L423 AbstractCegarLoop]: === Iteration 76 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:34,491 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:34,491 INFO L82 PathProgramCache]: Analyzing trace with hash -791909280, now seen corresponding path program 74 times [2018-10-01 00:32:34,491 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:34,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:34,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:34,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:34,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13579 backedges. 0 proven. 13579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:36,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:36,127 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:36,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:32:36,216 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:32:36,217 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:36,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13579 backedges. 0 proven. 13579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:41,282 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:41,282 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 299 [2018-10-01 00:32:41,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 300 states [2018-10-01 00:32:41,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 300 interpolants. [2018-10-01 00:32:41,287 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:41,287 INFO L87 Difference]: Start difference. First operand 374 states and 448 transitions. Second operand 300 states. [2018-10-01 00:32:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:50,223 INFO L93 Difference]: Finished difference Result 385 states and 461 transitions. [2018-10-01 00:32:50,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 00:32:50,223 INFO L78 Accepts]: Start accepts. Automaton has 300 states. Word has length 373 [2018-10-01 00:32:50,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:50,225 INFO L225 Difference]: With dead ends: 385 [2018-10-01 00:32:50,225 INFO L226 Difference]: Without dead ends: 383 [2018-10-01 00:32:50,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s Time [2018-10-01 00:32:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-10-01 00:32:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2018-10-01 00:32:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-01 00:32:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 454 transitions. [2018-10-01 00:32:50,232 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 454 transitions. Word has length 373 [2018-10-01 00:32:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:50,232 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 454 transitions. [2018-10-01 00:32:50,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 300 states. [2018-10-01 00:32:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 454 transitions. [2018-10-01 00:32:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-01 00:32:50,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:50,234 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 75, 1, 1, 1] [2018-10-01 00:32:50,234 INFO L423 AbstractCegarLoop]: === Iteration 77 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:50,234 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1480806764, now seen corresponding path program 75 times [2018-10-01 00:32:50,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:50,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:50,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:50,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:50,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13950 backedges. 0 proven. 13950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:51,792 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:51,792 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:32:51,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:32:51,969 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-01 00:32:51,969 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:51,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13950 backedges. 0 proven. 13950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:57,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:57,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 303 [2018-10-01 00:32:57,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 304 states [2018-10-01 00:32:57,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 304 interpolants. [2018-10-01 00:32:57,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:57,117 INFO L87 Difference]: Start difference. First operand 379 states and 454 transitions. Second operand 304 states. [2018-10-01 00:33:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:06,614 INFO L93 Difference]: Finished difference Result 390 states and 467 transitions. [2018-10-01 00:33:06,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 00:33:06,615 INFO L78 Accepts]: Start accepts. Automaton has 304 states. Word has length 378 [2018-10-01 00:33:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:06,616 INFO L225 Difference]: With dead ends: 390 [2018-10-01 00:33:06,616 INFO L226 Difference]: Without dead ends: 388 [2018-10-01 00:33:06,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8s Time [2018-10-01 00:33:06,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-10-01 00:33:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 384. [2018-10-01 00:33:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-10-01 00:33:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 460 transitions. [2018-10-01 00:33:06,624 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 460 transitions. Word has length 378 [2018-10-01 00:33:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:06,624 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 460 transitions. [2018-10-01 00:33:06,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 304 states. [2018-10-01 00:33:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 460 transitions. [2018-10-01 00:33:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-01 00:33:06,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:06,626 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 76, 1, 1, 1] [2018-10-01 00:33:06,626 INFO L423 AbstractCegarLoop]: === Iteration 78 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:06,626 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:06,626 INFO L82 PathProgramCache]: Analyzing trace with hash -456281120, now seen corresponding path program 76 times [2018-10-01 00:33:06,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:06,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:06,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:06,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:06,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 14326 backedges. 0 proven. 14326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:08,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:08,211 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:08,218 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:33:08,308 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:33:08,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:08,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 14326 backedges. 0 proven. 14326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:13,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:13,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 307 [2018-10-01 00:33:13,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 308 states [2018-10-01 00:33:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 308 interpolants. [2018-10-01 00:33:13,634 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:13,634 INFO L87 Difference]: Start difference. First operand 384 states and 460 transitions. Second operand 308 states. [2018-10-01 00:33:23,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:23,754 INFO L93 Difference]: Finished difference Result 395 states and 473 transitions. [2018-10-01 00:33:23,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 00:33:23,755 INFO L78 Accepts]: Start accepts. Automaton has 308 states. Word has length 383 [2018-10-01 00:33:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:23,756 INFO L225 Difference]: With dead ends: 395 [2018-10-01 00:33:23,756 INFO L226 Difference]: Without dead ends: 393 [2018-10-01 00:33:23,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9s Time [2018-10-01 00:33:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-10-01 00:33:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2018-10-01 00:33:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-10-01 00:33:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 466 transitions. [2018-10-01 00:33:23,763 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 466 transitions. Word has length 383 [2018-10-01 00:33:23,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:23,764 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 466 transitions. [2018-10-01 00:33:23,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 308 states. [2018-10-01 00:33:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 466 transitions. [2018-10-01 00:33:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-10-01 00:33:23,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:23,765 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 1, 1, 1] [2018-10-01 00:33:23,766 INFO L423 AbstractCegarLoop]: === Iteration 79 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:23,766 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:23,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1620919828, now seen corresponding path program 77 times [2018-10-01 00:33:23,766 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:23,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:23,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:23,767 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:23,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14707 backedges. 0 proven. 14707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:25,643 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:25,643 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:25,650 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:33:25,815 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-01 00:33:25,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:25,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14707 backedges. 0 proven. 14707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:31,210 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:31,210 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 311 [2018-10-01 00:33:31,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 312 states [2018-10-01 00:33:31,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 312 interpolants. [2018-10-01 00:33:31,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:31,215 INFO L87 Difference]: Start difference. First operand 389 states and 466 transitions. Second operand 312 states. [2018-10-01 00:33:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:40,915 INFO L93 Difference]: Finished difference Result 400 states and 479 transitions. [2018-10-01 00:33:40,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 00:33:40,915 INFO L78 Accepts]: Start accepts. Automaton has 312 states. Word has length 388 [2018-10-01 00:33:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:40,916 INFO L225 Difference]: With dead ends: 400 [2018-10-01 00:33:40,916 INFO L226 Difference]: Without dead ends: 398 [2018-10-01 00:33:40,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s Time [2018-10-01 00:33:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-10-01 00:33:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2018-10-01 00:33:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-10-01 00:33:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 472 transitions. [2018-10-01 00:33:40,924 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 472 transitions. Word has length 388 [2018-10-01 00:33:40,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:40,924 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 472 transitions. [2018-10-01 00:33:40,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 312 states. [2018-10-01 00:33:40,924 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 472 transitions. [2018-10-01 00:33:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-01 00:33:40,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:40,926 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 78, 1, 1, 1] [2018-10-01 00:33:40,926 INFO L423 AbstractCegarLoop]: === Iteration 80 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:40,926 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:40,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1954833568, now seen corresponding path program 78 times [2018-10-01 00:33:40,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:40,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:40,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:40,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:40,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15093 backedges. 0 proven. 15093 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:42,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:42,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:42,673 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:33:42,861 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 00:33:42,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:42,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15093 backedges. 0 proven. 15093 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:48,305 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:48,305 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 315 [2018-10-01 00:33:48,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 316 states [2018-10-01 00:33:48,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 316 interpolants. [2018-10-01 00:33:48,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:48,310 INFO L87 Difference]: Start difference. First operand 394 states and 472 transitions. Second operand 316 states. [2018-10-01 00:33:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:58,593 INFO L93 Difference]: Finished difference Result 405 states and 485 transitions. [2018-10-01 00:33:58,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 00:33:58,593 INFO L78 Accepts]: Start accepts. Automaton has 316 states. Word has length 393 [2018-10-01 00:33:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:58,595 INFO L225 Difference]: With dead ends: 405 [2018-10-01 00:33:58,595 INFO L226 Difference]: Without dead ends: 403 [2018-10-01 00:33:58,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1s Time [2018-10-01 00:33:58,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-10-01 00:33:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2018-10-01 00:33:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-10-01 00:33:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 478 transitions. [2018-10-01 00:33:58,601 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 478 transitions. Word has length 393 [2018-10-01 00:33:58,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:58,601 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 478 transitions. [2018-10-01 00:33:58,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 316 states. [2018-10-01 00:33:58,602 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 478 transitions. [2018-10-01 00:33:58,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-01 00:33:58,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:58,603 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 79, 1, 1, 1] [2018-10-01 00:33:58,603 INFO L423 AbstractCegarLoop]: === Iteration 81 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:58,603 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:58,604 INFO L82 PathProgramCache]: Analyzing trace with hash 649691756, now seen corresponding path program 79 times [2018-10-01 00:33:58,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:58,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:58,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:58,604 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:58,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 15484 backedges. 0 proven. 15484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:00,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:00,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:00,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:00,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15484 backedges. 0 proven. 15484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:05,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:05,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 319 [2018-10-01 00:34:05,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 320 states [2018-10-01 00:34:05,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 320 interpolants. [2018-10-01 00:34:05,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:05,941 INFO L87 Difference]: Start difference. First operand 399 states and 478 transitions. Second operand 320 states. [2018-10-01 00:34:16,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:16,539 INFO L93 Difference]: Finished difference Result 410 states and 491 transitions. [2018-10-01 00:34:16,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 00:34:16,540 INFO L78 Accepts]: Start accepts. Automaton has 320 states. Word has length 398 [2018-10-01 00:34:16,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:16,541 INFO L225 Difference]: With dead ends: 410 [2018-10-01 00:34:16,541 INFO L226 Difference]: Without dead ends: 408 [2018-10-01 00:34:16,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2s Time [2018-10-01 00:34:16,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-10-01 00:34:16,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 404. [2018-10-01 00:34:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-10-01 00:34:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 484 transitions. [2018-10-01 00:34:16,549 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 484 transitions. Word has length 398 [2018-10-01 00:34:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:16,549 INFO L480 AbstractCegarLoop]: Abstraction has 404 states and 484 transitions. [2018-10-01 00:34:16,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 320 states. [2018-10-01 00:34:16,549 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 484 transitions. [2018-10-01 00:34:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-10-01 00:34:16,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:16,551 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 80, 1, 1, 1] [2018-10-01 00:34:16,551 INFO L423 AbstractCegarLoop]: === Iteration 82 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:16,551 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:16,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1301160672, now seen corresponding path program 80 times [2018-10-01 00:34:16,552 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:16,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:16,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:16,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:16,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 15880 backedges. 0 proven. 15880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:18,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:18,268 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:18,275 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:34:18,367 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:34:18,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:18,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15880 backedges. 0 proven. 15880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:24,052 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:24,052 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 323 [2018-10-01 00:34:24,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 324 states [2018-10-01 00:34:24,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 324 interpolants. [2018-10-01 00:34:24,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:24,057 INFO L87 Difference]: Start difference. First operand 404 states and 484 transitions. Second operand 324 states. [2018-10-01 00:34:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:33,716 INFO L93 Difference]: Finished difference Result 415 states and 497 transitions. [2018-10-01 00:34:33,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 00:34:33,716 INFO L78 Accepts]: Start accepts. Automaton has 324 states. Word has length 403 [2018-10-01 00:34:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:33,717 INFO L225 Difference]: With dead ends: 415 [2018-10-01 00:34:33,717 INFO L226 Difference]: Without dead ends: 413 [2018-10-01 00:34:33,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s Time [2018-10-01 00:34:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-10-01 00:34:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 409. [2018-10-01 00:34:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-10-01 00:34:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 490 transitions. [2018-10-01 00:34:33,724 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 490 transitions. Word has length 403 [2018-10-01 00:34:33,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:33,724 INFO L480 AbstractCegarLoop]: Abstraction has 409 states and 490 transitions. [2018-10-01 00:34:33,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 324 states. [2018-10-01 00:34:33,724 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 490 transitions. [2018-10-01 00:34:33,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-01 00:34:33,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:33,726 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 81, 1, 1, 1] [2018-10-01 00:34:33,726 INFO L423 AbstractCegarLoop]: === Iteration 83 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:33,726 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:33,726 INFO L82 PathProgramCache]: Analyzing trace with hash 412068588, now seen corresponding path program 81 times [2018-10-01 00:34:33,726 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:33,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:33,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:33,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:33,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16281 backedges. 0 proven. 16281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:35,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:35,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:35,554 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:34:35,752 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-01 00:34:35,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:35,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16281 backedges. 0 proven. 16281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:41,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:41,500 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 327 [2018-10-01 00:34:41,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 328 states [2018-10-01 00:34:41,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 328 interpolants. [2018-10-01 00:34:41,505 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:41,505 INFO L87 Difference]: Start difference. First operand 409 states and 490 transitions. Second operand 328 states. [2018-10-01 00:34:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:52,891 INFO L93 Difference]: Finished difference Result 420 states and 503 transitions. [2018-10-01 00:34:52,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 00:34:52,891 INFO L78 Accepts]: Start accepts. Automaton has 328 states. Word has length 408 [2018-10-01 00:34:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:52,893 INFO L225 Difference]: With dead ends: 420 [2018-10-01 00:34:52,893 INFO L226 Difference]: Without dead ends: 418 [2018-10-01 00:34:52,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5s Time [2018-10-01 00:34:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-10-01 00:34:52,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 414. [2018-10-01 00:34:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-10-01 00:34:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 496 transitions. [2018-10-01 00:34:52,899 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 496 transitions. Word has length 408 [2018-10-01 00:34:52,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:52,900 INFO L480 AbstractCegarLoop]: Abstraction has 414 states and 496 transitions. [2018-10-01 00:34:52,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 328 states. [2018-10-01 00:34:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 496 transitions. [2018-10-01 00:34:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-01 00:34:52,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:52,901 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 82, 1, 1, 1] [2018-10-01 00:34:52,902 INFO L423 AbstractCegarLoop]: === Iteration 84 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:52,902 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:52,902 INFO L82 PathProgramCache]: Analyzing trace with hash 767380064, now seen corresponding path program 82 times [2018-10-01 00:34:52,902 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:52,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:52,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:52,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:52,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16687 backedges. 0 proven. 16687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:54,697 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:54,697 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:54,708 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:34:54,807 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:34:54,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:54,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 16687 backedges. 0 proven. 16687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:00,769 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:00,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 331 [2018-10-01 00:35:00,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 332 states [2018-10-01 00:35:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 332 interpolants. [2018-10-01 00:35:00,774 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:00,774 INFO L87 Difference]: Start difference. First operand 414 states and 496 transitions. Second operand 332 states. [2018-10-01 00:35:12,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:12,269 INFO L93 Difference]: Finished difference Result 425 states and 509 transitions. [2018-10-01 00:35:12,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 00:35:12,270 INFO L78 Accepts]: Start accepts. Automaton has 332 states. Word has length 413 [2018-10-01 00:35:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:12,271 INFO L225 Difference]: With dead ends: 425 [2018-10-01 00:35:12,271 INFO L226 Difference]: Without dead ends: 423 [2018-10-01 00:35:12,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s Time [2018-10-01 00:35:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-10-01 00:35:12,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2018-10-01 00:35:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-10-01 00:35:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 502 transitions. [2018-10-01 00:35:12,279 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 502 transitions. Word has length 413 [2018-10-01 00:35:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:12,279 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 502 transitions. [2018-10-01 00:35:12,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 332 states. [2018-10-01 00:35:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 502 transitions. [2018-10-01 00:35:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-10-01 00:35:12,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:12,281 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 83, 1, 1, 1] [2018-10-01 00:35:12,281 INFO L423 AbstractCegarLoop]: === Iteration 85 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:12,281 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:12,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1697461100, now seen corresponding path program 83 times [2018-10-01 00:35:12,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:12,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:12,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:12,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:12,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 17098 backedges. 0 proven. 17098 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:14,418 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:14,418 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:14,426 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:14,790 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-01 00:35:14,791 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:14,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 17098 backedges. 0 proven. 17098 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:20,788 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:20,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 335 [2018-10-01 00:35:20,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 336 states [2018-10-01 00:35:20,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 336 interpolants. [2018-10-01 00:35:20,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:20,794 INFO L87 Difference]: Start difference. First operand 419 states and 502 transitions. Second operand 336 states. [2018-10-01 00:35:32,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:32,193 INFO L93 Difference]: Finished difference Result 430 states and 515 transitions. [2018-10-01 00:35:32,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 00:35:32,193 INFO L78 Accepts]: Start accepts. Automaton has 336 states. Word has length 418 [2018-10-01 00:35:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:32,195 INFO L225 Difference]: With dead ends: 430 [2018-10-01 00:35:32,195 INFO L226 Difference]: Without dead ends: 428 [2018-10-01 00:35:32,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0s Time [2018-10-01 00:35:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-10-01 00:35:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 424. [2018-10-01 00:35:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-10-01 00:35:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 508 transitions. [2018-10-01 00:35:32,203 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 508 transitions. Word has length 418 [2018-10-01 00:35:32,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:32,203 INFO L480 AbstractCegarLoop]: Abstraction has 424 states and 508 transitions. [2018-10-01 00:35:32,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 336 states. [2018-10-01 00:35:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 508 transitions. [2018-10-01 00:35:32,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-10-01 00:35:32,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:32,206 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 84, 1, 1, 1] [2018-10-01 00:35:32,206 INFO L423 AbstractCegarLoop]: === Iteration 86 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:32,206 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:32,206 INFO L82 PathProgramCache]: Analyzing trace with hash 683741664, now seen corresponding path program 84 times [2018-10-01 00:35:32,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:32,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:32,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:32,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:32,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 17514 backedges. 0 proven. 17514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:34,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:34,255 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:34,266 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:34,506 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 00:35:34,506 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:34,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 17514 backedges. 0 proven. 17514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:40,734 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:40,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 339 [2018-10-01 00:35:40,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 340 states [2018-10-01 00:35:40,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 340 interpolants. [2018-10-01 00:35:40,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:40,740 INFO L87 Difference]: Start difference. First operand 424 states and 508 transitions. Second operand 340 states. [2018-10-01 00:35:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:52,139 INFO L93 Difference]: Finished difference Result 435 states and 521 transitions. [2018-10-01 00:35:52,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 00:35:52,139 INFO L78 Accepts]: Start accepts. Automaton has 340 states. Word has length 423 [2018-10-01 00:35:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:52,141 INFO L225 Difference]: With dead ends: 435 [2018-10-01 00:35:52,141 INFO L226 Difference]: Without dead ends: 433 [2018-10-01 00:35:52,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1s Time [2018-10-01 00:35:52,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-10-01 00:35:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2018-10-01 00:35:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-10-01 00:35:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 514 transitions. [2018-10-01 00:35:52,149 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 514 transitions. Word has length 423 [2018-10-01 00:35:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:52,150 INFO L480 AbstractCegarLoop]: Abstraction has 429 states and 514 transitions. [2018-10-01 00:35:52,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 340 states. [2018-10-01 00:35:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 514 transitions. [2018-10-01 00:35:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-10-01 00:35:52,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:52,152 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 85, 1, 1, 1] [2018-10-01 00:35:52,152 INFO L423 AbstractCegarLoop]: === Iteration 87 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:52,152 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:52,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1121590252, now seen corresponding path program 85 times [2018-10-01 00:35:52,152 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:52,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:52,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:52,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:52,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 17935 backedges. 0 proven. 17935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:54,272 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:54,272 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:54,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:54,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17935 backedges. 0 proven. 17935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:00,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:00,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 343 [2018-10-01 00:36:00,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 344 states [2018-10-01 00:36:00,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 344 interpolants. [2018-10-01 00:36:00,501 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:00,501 INFO L87 Difference]: Start difference. First operand 429 states and 514 transitions. Second operand 344 states. [2018-10-01 00:36:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:12,107 INFO L93 Difference]: Finished difference Result 440 states and 527 transitions. [2018-10-01 00:36:12,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 00:36:12,108 INFO L78 Accepts]: Start accepts. Automaton has 344 states. Word has length 428 [2018-10-01 00:36:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:12,109 INFO L225 Difference]: With dead ends: 440 [2018-10-01 00:36:12,109 INFO L226 Difference]: Without dead ends: 438 [2018-10-01 00:36:12,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1s Time [2018-10-01 00:36:12,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2018-10-01 00:36:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 434. [2018-10-01 00:36:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-01 00:36:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 520 transitions. [2018-10-01 00:36:12,117 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 520 transitions. Word has length 428 [2018-10-01 00:36:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:12,117 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 520 transitions. [2018-10-01 00:36:12,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 344 states. [2018-10-01 00:36:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 520 transitions. [2018-10-01 00:36:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-10-01 00:36:12,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:12,119 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 86, 1, 1, 1] [2018-10-01 00:36:12,119 INFO L423 AbstractCegarLoop]: === Iteration 88 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:12,120 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:12,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1252951712, now seen corresponding path program 86 times [2018-10-01 00:36:12,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:12,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:12,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:12,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:12,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18361 backedges. 0 proven. 18361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:14,250 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:14,250 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:14,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:36:14,353 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:36:14,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:14,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18361 backedges. 0 proven. 18361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:20,671 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:20,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 347 [2018-10-01 00:36:20,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 348 states [2018-10-01 00:36:20,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 348 interpolants. [2018-10-01 00:36:20,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:20,677 INFO L87 Difference]: Start difference. First operand 434 states and 520 transitions. Second operand 348 states. [2018-10-01 00:36:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:32,152 INFO L93 Difference]: Finished difference Result 445 states and 533 transitions. [2018-10-01 00:36:32,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 00:36:32,153 INFO L78 Accepts]: Start accepts. Automaton has 348 states. Word has length 433 [2018-10-01 00:36:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:32,154 INFO L225 Difference]: With dead ends: 445 [2018-10-01 00:36:32,154 INFO L226 Difference]: Without dead ends: 443 [2018-10-01 00:36:32,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2s Time [2018-10-01 00:36:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-10-01 00:36:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 439. [2018-10-01 00:36:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-10-01 00:36:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 526 transitions. [2018-10-01 00:36:32,162 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 526 transitions. Word has length 433 [2018-10-01 00:36:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:32,163 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 526 transitions. [2018-10-01 00:36:32,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 348 states. [2018-10-01 00:36:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 526 transitions. [2018-10-01 00:36:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-10-01 00:36:32,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:32,165 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 87, 1, 1, 1] [2018-10-01 00:36:32,165 INFO L423 AbstractCegarLoop]: === Iteration 89 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:32,165 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:32,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1377934228, now seen corresponding path program 87 times [2018-10-01 00:36:32,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:32,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:32,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:32,166 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:32,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18792 backedges. 0 proven. 18792 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:34,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:34,074 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:34,083 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:36:34,295 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-01 00:36:34,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:34,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18792 backedges. 0 proven. 18792 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:40,966 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:40,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 176] total 351 [2018-10-01 00:36:40,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 352 states [2018-10-01 00:36:40,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 352 interpolants. [2018-10-01 00:36:40,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:40,972 INFO L87 Difference]: Start difference. First operand 439 states and 526 transitions. Second operand 352 states. [2018-10-01 00:36:52,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:52,872 INFO L93 Difference]: Finished difference Result 450 states and 539 transitions. [2018-10-01 00:36:52,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-01 00:36:52,872 INFO L78 Accepts]: Start accepts. Automaton has 352 states. Word has length 438 [2018-10-01 00:36:52,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:52,874 INFO L225 Difference]: With dead ends: 450 [2018-10-01 00:36:52,874 INFO L226 Difference]: Without dead ends: 448 [2018-10-01 00:36:52,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4s Time [2018-10-01 00:36:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2018-10-01 00:36:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 444. [2018-10-01 00:36:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2018-10-01 00:36:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 532 transitions. [2018-10-01 00:36:52,881 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 532 transitions. Word has length 438 [2018-10-01 00:36:52,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:52,881 INFO L480 AbstractCegarLoop]: Abstraction has 444 states and 532 transitions. [2018-10-01 00:36:52,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 352 states. [2018-10-01 00:36:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 532 transitions. [2018-10-01 00:36:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-10-01 00:36:52,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:52,883 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 88, 1, 1, 1] [2018-10-01 00:36:52,883 INFO L423 AbstractCegarLoop]: === Iteration 90 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:52,884 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:52,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1143374048, now seen corresponding path program 88 times [2018-10-01 00:36:52,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:52,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:52,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:52,884 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:52,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19228 backedges. 0 proven. 19228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:54,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:54,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:54,823 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:36:54,928 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:36:54,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:54,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 19228 backedges. 0 proven. 19228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:01,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:01,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178, 178] total 355 [2018-10-01 00:37:01,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 356 states [2018-10-01 00:37:01,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 356 interpolants. [2018-10-01 00:37:01,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:01,731 INFO L87 Difference]: Start difference. First operand 444 states and 532 transitions. Second operand 356 states. [2018-10-01 00:37:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:13,949 INFO L93 Difference]: Finished difference Result 455 states and 545 transitions. [2018-10-01 00:37:13,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 00:37:13,950 INFO L78 Accepts]: Start accepts. Automaton has 356 states. Word has length 443 [2018-10-01 00:37:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:13,951 INFO L225 Difference]: With dead ends: 455 [2018-10-01 00:37:13,951 INFO L226 Difference]: Without dead ends: 453 [2018-10-01 00:37:13,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5s Time [2018-10-01 00:37:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-01 00:37:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2018-10-01 00:37:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-10-01 00:37:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 538 transitions. [2018-10-01 00:37:13,960 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 538 transitions. Word has length 443 [2018-10-01 00:37:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:13,960 INFO L480 AbstractCegarLoop]: Abstraction has 449 states and 538 transitions. [2018-10-01 00:37:13,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 356 states. [2018-10-01 00:37:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 538 transitions. [2018-10-01 00:37:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-10-01 00:37:13,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:13,962 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 89, 1, 1, 1] [2018-10-01 00:37:13,962 INFO L423 AbstractCegarLoop]: === Iteration 91 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:13,962 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:13,962 INFO L82 PathProgramCache]: Analyzing trace with hash -394130196, now seen corresponding path program 89 times [2018-10-01 00:37:13,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:13,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:13,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:13,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:13,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 19669 backedges. 0 proven. 19669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:16,221 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:16,221 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:16,228 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:37:16,445 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-01 00:37:16,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:16,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 19669 backedges. 0 proven. 19669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:23,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:23,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180, 180] total 359 [2018-10-01 00:37:23,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 360 states [2018-10-01 00:37:23,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 360 interpolants. [2018-10-01 00:37:23,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:23,310 INFO L87 Difference]: Start difference. First operand 449 states and 538 transitions. Second operand 360 states. [2018-10-01 00:37:36,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:36,178 INFO L93 Difference]: Finished difference Result 460 states and 551 transitions. [2018-10-01 00:37:36,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-10-01 00:37:36,178 INFO L78 Accepts]: Start accepts. Automaton has 360 states. Word has length 448 [2018-10-01 00:37:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:36,180 INFO L225 Difference]: With dead ends: 460 [2018-10-01 00:37:36,180 INFO L226 Difference]: Without dead ends: 458 [2018-10-01 00:37:36,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9s Time [2018-10-01 00:37:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2018-10-01 00:37:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 454. [2018-10-01 00:37:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2018-10-01 00:37:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 544 transitions. [2018-10-01 00:37:36,188 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 544 transitions. Word has length 448 [2018-10-01 00:37:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:36,189 INFO L480 AbstractCegarLoop]: Abstraction has 454 states and 544 transitions. [2018-10-01 00:37:36,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 360 states. [2018-10-01 00:37:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 544 transitions. [2018-10-01 00:37:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-10-01 00:37:36,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:36,191 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 90, 1, 1, 1] [2018-10-01 00:37:36,191 INFO L423 AbstractCegarLoop]: === Iteration 92 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:36,191 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:36,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1074255776, now seen corresponding path program 90 times [2018-10-01 00:37:36,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:36,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:36,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:36,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:36,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20115 backedges. 0 proven. 20115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:38,350 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:38,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:38,359 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:37:38,582 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 00:37:38,582 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:38,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20115 backedges. 0 proven. 20115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:45,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:45,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182, 182] total 363 [2018-10-01 00:37:45,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 364 states [2018-10-01 00:37:45,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 364 interpolants. [2018-10-01 00:37:45,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:45,301 INFO L87 Difference]: Start difference. First operand 454 states and 544 transitions. Second operand 364 states. Received shutdown request... [2018-10-01 00:37:57,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 00:37:57,570 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 00:37:57,576 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 00:37:57,576 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 12:37:57 BoogieIcfgContainer [2018-10-01 00:37:57,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 00:37:57,577 INFO L168 Benchmark]: Toolchain (without parser) took 802659.21 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 126.4 MB). Free memory was 1.4 GB in the beginning and 747.5 MB in the end (delta: 700.3 MB). Peak memory consumption was 826.7 MB. Max. memory is 7.1 GB. [2018-10-01 00:37:57,579 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 00:37:57,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 00:37:57,580 INFO L168 Benchmark]: Boogie Preprocessor took 25.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 00:37:57,580 INFO L168 Benchmark]: RCFGBuilder took 438.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 00:37:57,581 INFO L168 Benchmark]: TraceAbstraction took 802144.41 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 126.4 MB). Free memory was 1.4 GB in the beginning and 747.5 MB in the end (delta: 679.2 MB). Peak memory consumption was 805.5 MB. Max. memory is 7.1 GB. [2018-10-01 00:37:57,584 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 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 438.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 802144.41 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 126.4 MB). Free memory was 1.4 GB in the beginning and 747.5 MB in the end (delta: 679.2 MB). Peak memory consumption was 805.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 44). Cancelled while BasicCegarLoop was constructing difference of abstraction (454states) and FLOYD_HOARE automaton (currently 179 states, 364 states before enhancement), while ReachableStatesComputation was computing reachable states (443 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 802.0s OverallTime, 92 OverallIterations, 90 TraceHistogramMax, 422.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 923 SDtfs, 58960 SDslu, 48261 SDs, 0 SdLazy, 48251 SolverSat, 10966 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29029 GetRequests, 12467 SyntacticMatches, 0 SemanticMatches, 16562 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 323.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=454occurred in iteration=91, 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: 0.6s AutomataMinimizationTime, 91 MinimizatonAttempts, 361 StatesRemovedByMinimization, 90 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 7.7s SatisfiabilityAnalysisTime, 359.9s InterpolantComputationTime, 41501 NumberOfCodeBlocks, 41501 NumberOfCodeBlocksAsserted, 2312 NumberOfCheckSat, 41319 ConstructedInterpolants, 20565 QuantifiedInterpolants, 123541801 SizeOfPredicates, 4365 NumberOfNonLiveVariables, 34200 ConjunctsInSsa, 8550 ConjunctsInUnsatCore, 182 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1223041 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/GateController.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_00-37-57-595.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_00-37-57-595.csv Completed graceful shutdown