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-d19836b [2018-09-26 21:40:11,888 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:40:11,890 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:40:11,902 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 21:40:11,902 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 21:40:11,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 21:40:11,905 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 21:40:11,907 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 21:40:11,908 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 21:40:11,909 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 21:40:11,910 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 21:40:11,936 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 [2018-09-26 21:40:11,964 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:40:11,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:40:11,966 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:40:11,967 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:40:11,971 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:40:11,971 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:40:11,971 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:40:11,972 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:40:11,972 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:40:11,972 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:40:11,973 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:40:11,973 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:40:11,973 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:40:11,973 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:40:11,974 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:40:11,974 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:40:11,974 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:40:11,974 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:40:11,975 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:40:11,975 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:40:11,975 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:40:11,976 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:40:11,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:40:11,977 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:40:11,977 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:40:11,977 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:40:11,978 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:40:11,978 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:40:11,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:40:11,978 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:40:11,978 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-26 21:40:12,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:40:12,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:40:12,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:40:12,073 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:40:12,074 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:40:12,074 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl [2018-09-26 21:40:12,075 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl' [2018-09-26 21:40:12,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:40:12,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:40:12,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:40:12,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:40:12,121 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:40:12,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,160 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 21:40:12,160 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 21:40:12,160 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 21:40:12,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:40:12,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:40:12,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:40:12,164 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:40:12,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:40:12,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:40:12,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:40:12,191 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:40:12,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (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 [2018-09-26 21:40:12,285 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-26 21:40:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-26 21:40:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-26 21:40:12,605 INFO L343 CfgBuilder]: Using library mode [2018-09-26 21:40:12,605 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:40:12 BoogieIcfgContainer [2018-09-26 21:40:12,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:40:12,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:40:12,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:40:12,614 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:40:12,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/2) ... [2018-09-26 21:40:12,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4812531a and model type GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:40:12, skipping insertion in model container [2018-09-26 21:40:12,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:40:12" (2/2) ... [2018-09-26 21:40:12,619 INFO L112 eAbstractionObserver]: Analyzing ICFG GateController.bpl [2018-09-26 21:40:12,632 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:40:12,645 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:40:12,708 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:40:12,709 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:40:12,709 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:40:12,710 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:40:12,710 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:40:12,710 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:40:12,710 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:40:12,710 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:40:12,711 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:40:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-26 21:40:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 21:40:12,751 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:12,753 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-26 21:40:12,757 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:12,767 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash 30432, now seen corresponding path program 1 times [2018-09-26 21:40:12,770 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:12,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:12,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:12,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:12,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:13,025 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:40:13,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:40:13,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:40:13,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:40:13,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:13,051 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-26 21:40:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:13,276 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-09-26 21:40:13,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:40:13,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-26 21:40:13,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:13,291 INFO L225 Difference]: With dead ends: 19 [2018-09-26 21:40:13,292 INFO L226 Difference]: Without dead ends: 13 [2018-09-26 21:40:13,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-26 21:40:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-26 21:40:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-26 21:40:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-26 21:40:13,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 3 [2018-09-26 21:40:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:13,330 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-26 21:40:13,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:40:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-26 21:40:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 21:40:13,331 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:13,331 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:40:13,332 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:13,332 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:13,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1953617644, now seen corresponding path program 1 times [2018-09-26 21:40:13,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:13,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:13,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:13,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:13,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:13,439 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:13,439 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 [2018-09-26 21:40:13,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:13,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:13,759 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:13,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-09-26 21:40:13,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-26 21:40:13,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-26 21:40:13,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:13,760 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 8 states. [2018-09-26 21:40:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:14,220 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-26 21:40:14,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:40:14,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-26 21:40:14,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:14,222 INFO L225 Difference]: With dead ends: 21 [2018-09-26 21:40:14,222 INFO L226 Difference]: Without dead ends: 19 [2018-09-26 21:40:14,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-26 21:40:14,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-09-26 21:40:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-26 21:40:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-09-26 21:40:14,229 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-09-26 21:40:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:14,229 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-09-26 21:40:14,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-26 21:40:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-09-26 21:40:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 21:40:14,230 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:14,230 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:40:14,232 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:14,232 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:14,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1953558062, now seen corresponding path program 1 times [2018-09-26 21:40:14,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:14,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:14,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:14,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:14,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:14,280 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:40:14,280 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:40:14,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:40:14,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:40:14,281 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:14,281 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2018-09-26 21:40:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:14,310 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-26 21:40:14,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:40:14,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-09-26 21:40:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:14,311 INFO L225 Difference]: With dead ends: 21 [2018-09-26 21:40:14,311 INFO L226 Difference]: Without dead ends: 14 [2018-09-26 21:40:14,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-26 21:40:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-26 21:40:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-26 21:40:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-09-26 21:40:14,317 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-09-26 21:40:14,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:14,317 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-09-26 21:40:14,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:40:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-09-26 21:40:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-26 21:40:14,318 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:14,318 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-09-26 21:40:14,319 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:14,319 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash 72785504, now seen corresponding path program 2 times [2018-09-26 21:40:14,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:14,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:14,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:14,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:14,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:14,421 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:14,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:40:14,440 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:40:14,465 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:40:14,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:14,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:15,007 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:15,007 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-09-26 21:40:15,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-26 21:40:15,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-26 21:40:15,008 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:15,009 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 12 states. [2018-09-26 21:40:15,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:15,597 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-09-26 21:40:15,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 21:40:15,597 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-09-26 21:40:15,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:15,598 INFO L225 Difference]: With dead ends: 25 [2018-09-26 21:40:15,599 INFO L226 Difference]: Without dead ends: 23 [2018-09-26 21:40:15,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-26 21:40:15,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-09-26 21:40:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-26 21:40:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-09-26 21:40:15,604 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-09-26 21:40:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:15,604 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-09-26 21:40:15,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-26 21:40:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-09-26 21:40:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-26 21:40:15,605 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:15,606 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-09-26 21:40:15,606 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:15,606 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:15,606 INFO L82 PathProgramCache]: Analyzing trace with hash 491282284, now seen corresponding path program 3 times [2018-09-26 21:40:15,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:15,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:15,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:15,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:15,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:15,956 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:15,956 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 [2018-09-26 21:40:15,974 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:40:16,041 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-26 21:40:16,042 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:16,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:16,540 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:16,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-09-26 21:40:16,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-26 21:40:16,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-26 21:40:16,541 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:16,542 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 16 states. [2018-09-26 21:40:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:16,861 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-09-26 21:40:16,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-26 21:40:16,862 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-26 21:40:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:16,863 INFO L225 Difference]: With dead ends: 30 [2018-09-26 21:40:16,863 INFO L226 Difference]: Without dead ends: 28 [2018-09-26 21:40:16,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:16,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-26 21:40:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-09-26 21:40:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-26 21:40:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-09-26 21:40:16,869 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2018-09-26 21:40:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:16,870 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-09-26 21:40:16,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-26 21:40:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-09-26 21:40:16,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-26 21:40:16,871 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:16,871 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-09-26 21:40:16,871 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:16,872 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:16,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1589732832, now seen corresponding path program 4 times [2018-09-26 21:40:16,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:16,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:16,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:16,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:16,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:17,064 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:17,064 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 [2018-09-26 21:40:17,073 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:40:17,082 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:40:17,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:17,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:17,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:17,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-26 21:40:17,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-26 21:40:17,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-26 21:40:17,802 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:17,802 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 20 states. [2018-09-26 21:40:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:18,370 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-09-26 21:40:18,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-26 21:40:18,371 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-09-26 21:40:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:18,372 INFO L225 Difference]: With dead ends: 35 [2018-09-26 21:40:18,372 INFO L226 Difference]: Without dead ends: 33 [2018-09-26 21:40:18,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-26 21:40:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-09-26 21:40:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-26 21:40:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2018-09-26 21:40:18,378 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2018-09-26 21:40:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:18,378 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2018-09-26 21:40:18,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-26 21:40:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2018-09-26 21:40:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-26 21:40:18,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:18,381 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-09-26 21:40:18,382 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:18,382 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:18,382 INFO L82 PathProgramCache]: Analyzing trace with hash 602818540, now seen corresponding path program 5 times [2018-09-26 21:40:18,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:18,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:18,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:18,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:18,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:18,520 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:18,520 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:40:18,528 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:40:18,543 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-26 21:40:18,543 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:18,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:19,372 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:19,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-09-26 21:40:19,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-26 21:40:19,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-26 21:40:19,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:19,375 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 24 states. [2018-09-26 21:40:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:19,980 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2018-09-26 21:40:19,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-26 21:40:19,980 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-09-26 21:40:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:19,981 INFO L225 Difference]: With dead ends: 40 [2018-09-26 21:40:19,981 INFO L226 Difference]: Without dead ends: 38 [2018-09-26 21:40:19,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:19,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-26 21:40:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-09-26 21:40:19,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-26 21:40:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-26 21:40:19,986 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2018-09-26 21:40:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:19,987 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-26 21:40:19,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-26 21:40:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-26 21:40:19,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-26 21:40:19,988 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:19,988 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-09-26 21:40:19,988 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:19,989 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:19,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1979239776, now seen corresponding path program 6 times [2018-09-26 21:40:19,989 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:19,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:19,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:19,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:19,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:20,189 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:20,189 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:20,190 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 [2018-09-26 21:40:20,198 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:40:20,230 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-26 21:40:20,231 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:20,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:22,100 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:22,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-09-26 21:40:22,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-26 21:40:22,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-26 21:40:22,102 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:22,102 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 28 states. [2018-09-26 21:40:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:22,760 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-09-26 21:40:22,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-26 21:40:22,761 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2018-09-26 21:40:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:22,762 INFO L225 Difference]: With dead ends: 45 [2018-09-26 21:40:22,762 INFO L226 Difference]: Without dead ends: 43 [2018-09-26 21:40:22,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-26 21:40:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-09-26 21:40:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-26 21:40:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-09-26 21:40:22,768 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 33 [2018-09-26 21:40:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:22,769 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-09-26 21:40:22,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-26 21:40:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-09-26 21:40:22,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-26 21:40:22,770 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:22,770 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-09-26 21:40:22,771 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:22,771 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:22,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1800695700, now seen corresponding path program 7 times [2018-09-26 21:40:22,771 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:22,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:22,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:22,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:22,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:23,070 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:23,070 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 [2018-09-26 21:40:23,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:23,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:23,809 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:23,810 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-09-26 21:40:23,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-26 21:40:23,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-26 21:40:23,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:23,811 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 32 states. [2018-09-26 21:40:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:24,694 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-09-26 21:40:24,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-26 21:40:24,695 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-09-26 21:40:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:24,696 INFO L225 Difference]: With dead ends: 50 [2018-09-26 21:40:24,696 INFO L226 Difference]: Without dead ends: 48 [2018-09-26 21:40:24,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-26 21:40:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-09-26 21:40:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-26 21:40:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-26 21:40:24,702 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2018-09-26 21:40:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:24,703 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-26 21:40:24,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-26 21:40:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-26 21:40:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-26 21:40:24,704 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:24,704 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-09-26 21:40:24,704 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:24,705 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1430989600, now seen corresponding path program 8 times [2018-09-26 21:40:24,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:24,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:24,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:24,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:24,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:24,891 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:24,891 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:40:24,901 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:40:24,930 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:40:24,930 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:24,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:25,777 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:25,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-09-26 21:40:25,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-26 21:40:25,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-26 21:40:25,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:25,779 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 36 states. [2018-09-26 21:40:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:26,262 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-09-26 21:40:26,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-26 21:40:26,262 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-09-26 21:40:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:26,263 INFO L225 Difference]: With dead ends: 55 [2018-09-26 21:40:26,263 INFO L226 Difference]: Without dead ends: 53 [2018-09-26 21:40:26,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-26 21:40:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-09-26 21:40:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-26 21:40:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-09-26 21:40:26,269 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2018-09-26 21:40:26,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:26,269 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-09-26 21:40:26,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-26 21:40:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-09-26 21:40:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-26 21:40:26,271 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:26,271 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-09-26 21:40:26,271 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:26,271 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:26,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1043842836, now seen corresponding path program 9 times [2018-09-26 21:40:26,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:26,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:26,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:26,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:26,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:26,486 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:26,486 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 [2018-09-26 21:40:26,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:40:26,519 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-26 21:40:26,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:26,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:28,327 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:28,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-09-26 21:40:28,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-26 21:40:28,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-26 21:40:28,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:28,329 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 40 states. [2018-09-26 21:40:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:28,975 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-09-26 21:40:28,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-26 21:40:28,976 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2018-09-26 21:40:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:28,976 INFO L225 Difference]: With dead ends: 60 [2018-09-26 21:40:28,977 INFO L226 Difference]: Without dead ends: 58 [2018-09-26 21:40:28,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-26 21:40:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-09-26 21:40:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-26 21:40:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-09-26 21:40:28,983 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 48 [2018-09-26 21:40:28,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:28,983 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-09-26 21:40:28,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-26 21:40:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-09-26 21:40:28,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-26 21:40:28,984 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:28,984 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-09-26 21:40:28,985 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:28,985 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:28,985 INFO L82 PathProgramCache]: Analyzing trace with hash -676496288, now seen corresponding path program 10 times [2018-09-26 21:40:28,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:28,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:28,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:28,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:28,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:29,588 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:29,588 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:40:29,596 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:40:29,638 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:40:29,639 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:29,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:30,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:30,737 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-09-26 21:40:30,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-26 21:40:30,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-26 21:40:30,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:30,738 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 44 states. [2018-09-26 21:40:31,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:31,757 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-09-26 21:40:31,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-26 21:40:31,758 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 53 [2018-09-26 21:40:31,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:31,758 INFO L225 Difference]: With dead ends: 65 [2018-09-26 21:40:31,758 INFO L226 Difference]: Without dead ends: 63 [2018-09-26 21:40:31,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:31,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-26 21:40:31,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-09-26 21:40:31,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-26 21:40:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-09-26 21:40:31,767 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 53 [2018-09-26 21:40:31,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:31,768 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-09-26 21:40:31,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-26 21:40:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-09-26 21:40:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-26 21:40:31,769 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:31,769 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-09-26 21:40:31,769 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:31,770 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:31,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1014218388, now seen corresponding path program 11 times [2018-09-26 21:40:31,770 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:31,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:31,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:31,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:31,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:32,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:32,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:40:32,046 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:40:32,067 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-26 21:40:32,067 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:32,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:33,073 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:33,073 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-09-26 21:40:33,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-26 21:40:33,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-26 21:40:33,074 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:33,074 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 48 states. [2018-09-26 21:40:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:34,048 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-09-26 21:40:34,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-26 21:40:34,049 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 58 [2018-09-26 21:40:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:34,050 INFO L225 Difference]: With dead ends: 70 [2018-09-26 21:40:34,050 INFO L226 Difference]: Without dead ends: 68 [2018-09-26 21:40:34,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:34,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-26 21:40:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-26 21:40:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-26 21:40:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2018-09-26 21:40:34,055 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 58 [2018-09-26 21:40:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:34,056 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2018-09-26 21:40:34,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-26 21:40:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2018-09-26 21:40:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-26 21:40:34,057 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:34,057 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-09-26 21:40:34,057 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:34,058 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:34,058 INFO L82 PathProgramCache]: Analyzing trace with hash -778386464, now seen corresponding path program 12 times [2018-09-26 21:40:34,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:34,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:34,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:34,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:34,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:34,712 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:34,712 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:40:34,720 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:40:34,774 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-26 21:40:34,775 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:34,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:35,726 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:35,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-09-26 21:40:35,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-26 21:40:35,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-26 21:40:35,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:35,728 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 52 states. [2018-09-26 21:40:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:36,529 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2018-09-26 21:40:36,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-26 21:40:36,530 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2018-09-26 21:40:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:36,531 INFO L225 Difference]: With dead ends: 75 [2018-09-26 21:40:36,531 INFO L226 Difference]: Without dead ends: 73 [2018-09-26 21:40:36,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-26 21:40:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-09-26 21:40:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-26 21:40:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2018-09-26 21:40:36,538 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 63 [2018-09-26 21:40:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:36,538 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2018-09-26 21:40:36,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-26 21:40:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2018-09-26 21:40:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-26 21:40:36,540 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:36,540 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-09-26 21:40:36,540 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:36,541 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:36,541 INFO L82 PathProgramCache]: Analyzing trace with hash -130045460, now seen corresponding path program 13 times [2018-09-26 21:40:36,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:36,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:36,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:36,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:36,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:36,870 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:36,870 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 [2018-09-26 21:40:36,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:36,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:37,931 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:37,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-09-26 21:40:37,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-26 21:40:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-26 21:40:37,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:37,933 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 56 states. [2018-09-26 21:40:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:39,193 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-09-26 21:40:39,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-26 21:40:39,194 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 68 [2018-09-26 21:40:39,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:39,194 INFO L225 Difference]: With dead ends: 80 [2018-09-26 21:40:39,195 INFO L226 Difference]: Without dead ends: 78 [2018-09-26 21:40:39,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-26 21:40:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-09-26 21:40:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-26 21:40:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2018-09-26 21:40:39,200 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 68 [2018-09-26 21:40:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:39,200 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2018-09-26 21:40:39,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-26 21:40:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2018-09-26 21:40:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-26 21:40:39,201 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:39,202 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-09-26 21:40:39,202 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:39,202 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:39,202 INFO L82 PathProgramCache]: Analyzing trace with hash -415978656, now seen corresponding path program 14 times [2018-09-26 21:40:39,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:39,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:39,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:39,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:39,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:39,523 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:39,523 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 [2018-09-26 21:40:39,533 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:40:39,576 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:40:39,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:39,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:40,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:40,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-09-26 21:40:40,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-26 21:40:40,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-26 21:40:40,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:40,748 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 60 states. [2018-09-26 21:40:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:42,071 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-09-26 21:40:42,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-26 21:40:42,071 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 73 [2018-09-26 21:40:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:42,072 INFO L225 Difference]: With dead ends: 85 [2018-09-26 21:40:42,072 INFO L226 Difference]: Without dead ends: 83 [2018-09-26 21:40:42,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:42,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-26 21:40:42,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-09-26 21:40:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-26 21:40:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2018-09-26 21:40:42,077 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 73 [2018-09-26 21:40:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:42,078 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2018-09-26 21:40:42,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-26 21:40:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-09-26 21:40:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-26 21:40:42,079 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:42,079 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-09-26 21:40:42,079 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:42,079 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2077592980, now seen corresponding path program 15 times [2018-09-26 21:40:42,080 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:42,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:42,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:42,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:42,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:42,582 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:42,582 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:40:42,589 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:40:42,612 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-26 21:40:42,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:42,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:43,967 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:43,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-09-26 21:40:43,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-26 21:40:43,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-26 21:40:43,969 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:43,969 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 64 states. [2018-09-26 21:40:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:45,313 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-09-26 21:40:45,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-26 21:40:45,313 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 78 [2018-09-26 21:40:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:45,314 INFO L225 Difference]: With dead ends: 90 [2018-09-26 21:40:45,314 INFO L226 Difference]: Without dead ends: 88 [2018-09-26 21:40:45,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-26 21:40:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-09-26 21:40:45,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-26 21:40:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-09-26 21:40:45,320 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 78 [2018-09-26 21:40:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:45,320 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-09-26 21:40:45,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-26 21:40:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-09-26 21:40:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-26 21:40:45,321 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:45,321 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-09-26 21:40:45,321 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:45,321 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:45,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1630745312, now seen corresponding path program 16 times [2018-09-26 21:40:45,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:45,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:45,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:45,322 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:45,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:46,484 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:46,485 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 [2018-09-26 21:40:46,499 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:40:46,521 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:40:46,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:46,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:48,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:48,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-09-26 21:40:48,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-26 21:40:48,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-26 21:40:48,005 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:48,006 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 68 states. [2018-09-26 21:40:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:49,710 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2018-09-26 21:40:49,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-26 21:40:49,710 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 83 [2018-09-26 21:40:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:49,711 INFO L225 Difference]: With dead ends: 95 [2018-09-26 21:40:49,711 INFO L226 Difference]: Without dead ends: 93 [2018-09-26 21:40:49,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:49,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-26 21:40:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-09-26 21:40:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-26 21:40:49,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-09-26 21:40:49,716 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 83 [2018-09-26 21:40:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:49,716 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-09-26 21:40:49,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-26 21:40:49,717 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-09-26 21:40:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-26 21:40:49,717 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:49,718 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-09-26 21:40:49,718 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:49,718 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:49,718 INFO L82 PathProgramCache]: Analyzing trace with hash -778790164, now seen corresponding path program 17 times [2018-09-26 21:40:49,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:49,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:49,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:49,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:49,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:50,069 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:50,069 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 [2018-09-26 21:40:50,079 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:40:50,107 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-26 21:40:50,107 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:50,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:51,884 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:51,884 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-09-26 21:40:51,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-26 21:40:51,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-26 21:40:51,887 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:51,887 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 72 states. [2018-09-26 21:40:53,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:53,734 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2018-09-26 21:40:53,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-26 21:40:53,734 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 88 [2018-09-26 21:40:53,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:53,735 INFO L225 Difference]: With dead ends: 100 [2018-09-26 21:40:53,735 INFO L226 Difference]: Without dead ends: 98 [2018-09-26 21:40:53,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:53,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-26 21:40:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-09-26 21:40:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-26 21:40:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2018-09-26 21:40:53,740 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 88 [2018-09-26 21:40:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:53,740 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2018-09-26 21:40:53,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-26 21:40:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2018-09-26 21:40:53,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-26 21:40:53,741 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:53,741 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-09-26 21:40:53,742 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:53,742 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:53,742 INFO L82 PathProgramCache]: Analyzing trace with hash 38689376, now seen corresponding path program 18 times [2018-09-26 21:40:53,742 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:53,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:53,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:53,743 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:53,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:54,146 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:54,146 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 [2018-09-26 21:40:54,154 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:40:54,185 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-26 21:40:54,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:54,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:56,059 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:56,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-09-26 21:40:56,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-26 21:40:56,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-26 21:40:56,062 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:56,063 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 76 states. [2018-09-26 21:40:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:58,227 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2018-09-26 21:40:58,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-26 21:40:58,228 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 93 [2018-09-26 21:40:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:58,228 INFO L225 Difference]: With dead ends: 105 [2018-09-26 21:40:58,228 INFO L226 Difference]: Without dead ends: 103 [2018-09-26 21:40:58,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:58,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-26 21:40:58,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-09-26 21:40:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-26 21:40:58,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-09-26 21:40:58,232 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 93 [2018-09-26 21:40:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:58,232 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-09-26 21:40:58,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-26 21:40:58,233 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2018-09-26 21:40:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-26 21:40:58,233 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:58,234 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-09-26 21:40:58,234 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:58,234 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:58,234 INFO L82 PathProgramCache]: Analyzing trace with hash 281420652, now seen corresponding path program 19 times [2018-09-26 21:40:58,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:58,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:58,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:58,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:58,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:58,809 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:58,809 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:40:58,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:58,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:00,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:00,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-09-26 21:41:00,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-26 21:41:00,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-26 21:41:00,982 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:00,983 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 80 states. [2018-09-26 21:41:03,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:03,558 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2018-09-26 21:41:03,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-26 21:41:03,558 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 98 [2018-09-26 21:41:03,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:03,559 INFO L225 Difference]: With dead ends: 110 [2018-09-26 21:41:03,559 INFO L226 Difference]: Without dead ends: 108 [2018-09-26 21:41:03,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-26 21:41:03,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-09-26 21:41:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-26 21:41:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2018-09-26 21:41:03,564 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 98 [2018-09-26 21:41:03,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:03,564 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2018-09-26 21:41:03,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-26 21:41:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2018-09-26 21:41:03,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-26 21:41:03,566 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:03,566 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-09-26 21:41:03,566 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:03,566 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:03,566 INFO L82 PathProgramCache]: Analyzing trace with hash -2025971232, now seen corresponding path program 20 times [2018-09-26 21:41:03,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:03,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:03,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:03,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:41:03,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:04,051 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:04,051 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 [2018-09-26 21:41:04,058 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:41:04,086 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:41:04,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:04,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:07,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:07,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-09-26 21:41:07,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-26 21:41:07,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-26 21:41:07,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:07,058 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 84 states. [2018-09-26 21:41:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:09,752 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-09-26 21:41:09,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-26 21:41:09,754 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 103 [2018-09-26 21:41:09,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:09,755 INFO L225 Difference]: With dead ends: 115 [2018-09-26 21:41:09,755 INFO L226 Difference]: Without dead ends: 113 [2018-09-26 21:41:09,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-26 21:41:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-09-26 21:41:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-26 21:41:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2018-09-26 21:41:09,761 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 103 [2018-09-26 21:41:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:09,761 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2018-09-26 21:41:09,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-26 21:41:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2018-09-26 21:41:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-26 21:41:09,762 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:09,762 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-09-26 21:41:09,762 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:09,762 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:09,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1207497748, now seen corresponding path program 21 times [2018-09-26 21:41:09,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:09,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:09,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:09,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:09,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:10,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:10,307 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 [2018-09-26 21:41:10,317 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:41:10,395 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-26 21:41:10,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:10,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:12,560 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:12,561 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-09-26 21:41:12,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-26 21:41:12,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-26 21:41:12,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:12,566 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand 88 states. [2018-09-26 21:41:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:15,685 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-09-26 21:41:15,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-26 21:41:15,686 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 108 [2018-09-26 21:41:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:15,687 INFO L225 Difference]: With dead ends: 120 [2018-09-26 21:41:15,687 INFO L226 Difference]: Without dead ends: 118 [2018-09-26 21:41:15,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-26 21:41:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-09-26 21:41:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-26 21:41:15,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-09-26 21:41:15,692 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 108 [2018-09-26 21:41:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:15,693 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-09-26 21:41:15,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-26 21:41:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-09-26 21:41:15,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-26 21:41:15,694 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:15,694 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-09-26 21:41:15,694 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:15,694 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:15,694 INFO L82 PathProgramCache]: Analyzing trace with hash 649759072, now seen corresponding path program 22 times [2018-09-26 21:41:15,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:15,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:15,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:15,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:15,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:16,432 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:16,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:41:16,439 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:41:16,462 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:41:16,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:16,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:18,818 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:18,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-09-26 21:41:18,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-26 21:41:18,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-26 21:41:18,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:18,822 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 92 states. [2018-09-26 21:41:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:22,438 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2018-09-26 21:41:22,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-26 21:41:22,438 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 113 [2018-09-26 21:41:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:22,439 INFO L225 Difference]: With dead ends: 125 [2018-09-26 21:41:22,439 INFO L226 Difference]: Without dead ends: 123 [2018-09-26 21:41:22,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-26 21:41:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-09-26 21:41:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-26 21:41:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-09-26 21:41:22,445 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 113 [2018-09-26 21:41:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:22,445 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-09-26 21:41:22,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-26 21:41:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-09-26 21:41:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-26 21:41:22,446 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:22,446 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-09-26 21:41:22,447 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:22,447 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:22,447 INFO L82 PathProgramCache]: Analyzing trace with hash 60773484, now seen corresponding path program 23 times [2018-09-26 21:41:22,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:22,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:22,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:22,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:22,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:23,032 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:23,032 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:41:23,039 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:41:23,083 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-26 21:41:23,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:23,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:25,704 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:25,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-09-26 21:41:25,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-26 21:41:25,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-26 21:41:25,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:25,709 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 96 states. [2018-09-26 21:41:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:29,625 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2018-09-26 21:41:29,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-26 21:41:29,626 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 118 [2018-09-26 21:41:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:29,627 INFO L225 Difference]: With dead ends: 130 [2018-09-26 21:41:29,627 INFO L226 Difference]: Without dead ends: 128 [2018-09-26 21:41:29,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-26 21:41:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-09-26 21:41:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-26 21:41:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2018-09-26 21:41:29,631 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 118 [2018-09-26 21:41:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:29,631 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2018-09-26 21:41:29,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-26 21:41:29,631 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2018-09-26 21:41:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-26 21:41:29,632 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:29,632 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-09-26 21:41:29,632 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:29,632 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:29,633 INFO L82 PathProgramCache]: Analyzing trace with hash 293310688, now seen corresponding path program 24 times [2018-09-26 21:41:29,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:29,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:29,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:29,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:29,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:30,259 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:30,259 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 [2018-09-26 21:41:30,266 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:41:30,307 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-26 21:41:30,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:30,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:33,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:33,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-09-26 21:41:33,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-26 21:41:33,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-26 21:41:33,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:33,060 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 100 states. [2018-09-26 21:41:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:37,372 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2018-09-26 21:41:37,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-26 21:41:37,372 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 123 [2018-09-26 21:41:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:37,374 INFO L225 Difference]: With dead ends: 135 [2018-09-26 21:41:37,374 INFO L226 Difference]: Without dead ends: 133 [2018-09-26 21:41:37,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:37,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-26 21:41:37,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-09-26 21:41:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-26 21:41:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-09-26 21:41:37,379 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 123 [2018-09-26 21:41:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:37,380 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-09-26 21:41:37,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-26 21:41:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-09-26 21:41:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-26 21:41:37,381 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:37,381 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-09-26 21:41:37,381 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:37,381 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:37,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1977023724, now seen corresponding path program 25 times [2018-09-26 21:41:37,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:37,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:37,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:37,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:37,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:37,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:37,998 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 [2018-09-26 21:41:38,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:41:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:38,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:40,857 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:40,857 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-09-26 21:41:40,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-26 21:41:40,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-26 21:41:40,865 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:40,865 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 104 states. [2018-09-26 21:41:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:45,895 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2018-09-26 21:41:45,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-26 21:41:45,896 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 128 [2018-09-26 21:41:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:45,896 INFO L225 Difference]: With dead ends: 140 [2018-09-26 21:41:45,896 INFO L226 Difference]: Without dead ends: 138 [2018-09-26 21:41:45,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-26 21:41:45,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-09-26 21:41:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-26 21:41:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-09-26 21:41:45,902 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 128 [2018-09-26 21:41:45,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:45,902 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-09-26 21:41:45,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-26 21:41:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-09-26 21:41:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-26 21:41:45,903 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:45,903 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-09-26 21:41:45,903 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:45,903 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:45,903 INFO L82 PathProgramCache]: Analyzing trace with hash -231131040, now seen corresponding path program 26 times [2018-09-26 21:41:45,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:45,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:45,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:45,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:41:45,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:46,748 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:46,748 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 [2018-09-26 21:41:46,756 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:41:46,788 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:41:46,788 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:46,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:50,379 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:50,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-09-26 21:41:50,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-26 21:41:50,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-26 21:41:50,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:50,386 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 108 states. [2018-09-26 21:41:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:56,052 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2018-09-26 21:41:56,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-26 21:41:56,052 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 133 [2018-09-26 21:41:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:56,053 INFO L225 Difference]: With dead ends: 145 [2018-09-26 21:41:56,053 INFO L226 Difference]: Without dead ends: 143 [2018-09-26 21:41:56,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-26 21:41:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-09-26 21:41:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-26 21:41:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2018-09-26 21:41:56,058 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 133 [2018-09-26 21:41:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:56,058 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2018-09-26 21:41:56,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-26 21:41:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2018-09-26 21:41:56,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-26 21:41:56,058 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:56,059 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-09-26 21:41:56,059 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:56,059 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:56,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1458963820, now seen corresponding path program 27 times [2018-09-26 21:41:56,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:56,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:56,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:56,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:56,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:56,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:56,695 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 [2018-09-26 21:41:56,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:41:56,752 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-26 21:41:56,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:56,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:00,172 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:00,172 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-09-26 21:42:00,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-26 21:42:00,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-26 21:42:00,179 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:00,179 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand 112 states. [2018-09-26 21:42:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:06,193 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2018-09-26 21:42:06,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-26 21:42:06,194 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 138 [2018-09-26 21:42:06,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:06,195 INFO L225 Difference]: With dead ends: 150 [2018-09-26 21:42:06,195 INFO L226 Difference]: Without dead ends: 148 [2018-09-26 21:42:06,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-26 21:42:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-09-26 21:42:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-26 21:42:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2018-09-26 21:42:06,199 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 138 [2018-09-26 21:42:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:06,200 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2018-09-26 21:42:06,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-26 21:42:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2018-09-26 21:42:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-26 21:42:06,201 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:06,201 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-09-26 21:42:06,201 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:06,201 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1839955936, now seen corresponding path program 28 times [2018-09-26 21:42:06,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:06,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:06,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:06,906 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:06,907 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 [2018-09-26 21:42:06,915 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:42:06,950 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:42:06,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:06,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:10,785 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:10,785 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-09-26 21:42:10,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-26 21:42:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-26 21:42:10,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:10,794 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 116 states. [2018-09-26 21:42:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:17,261 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2018-09-26 21:42:17,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-26 21:42:17,261 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 143 [2018-09-26 21:42:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:17,262 INFO L225 Difference]: With dead ends: 155 [2018-09-26 21:42:17,262 INFO L226 Difference]: Without dead ends: 153 [2018-09-26 21:42:17,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-26 21:42:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-09-26 21:42:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-26 21:42:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2018-09-26 21:42:17,268 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 143 [2018-09-26 21:42:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:17,268 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2018-09-26 21:42:17,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-26 21:42:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2018-09-26 21:42:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-26 21:42:17,269 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:17,270 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-09-26 21:42:17,270 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:17,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash 893677036, now seen corresponding path program 29 times [2018-09-26 21:42:17,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:17,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:17,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:17,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:17,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:18,174 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:18,174 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 [2018-09-26 21:42:18,181 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:42:18,228 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-26 21:42:18,228 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:18,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:21,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:21,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-09-26 21:42:21,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-26 21:42:21,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-26 21:42:21,992 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:21,992 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 120 states. [2018-09-26 21:42:29,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:29,348 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2018-09-26 21:42:29,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-26 21:42:29,349 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 148 [2018-09-26 21:42:29,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:29,350 INFO L225 Difference]: With dead ends: 160 [2018-09-26 21:42:29,350 INFO L226 Difference]: Without dead ends: 158 [2018-09-26 21:42:29,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:29,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-26 21:42:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-09-26 21:42:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-26 21:42:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-09-26 21:42:29,359 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 148 [2018-09-26 21:42:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:29,359 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-09-26 21:42:29,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-26 21:42:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-09-26 21:42:29,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-26 21:42:29,360 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:29,360 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-09-26 21:42:29,360 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:29,360 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:29,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1567987872, now seen corresponding path program 30 times [2018-09-26 21:42:29,361 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:29,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:29,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:29,362 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:29,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:30,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:30,103 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 [2018-09-26 21:42:30,110 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:42:30,166 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-26 21:42:30,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:30,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:34,236 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:34,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-09-26 21:42:34,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-26 21:42:34,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-26 21:42:34,247 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:34,247 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 124 states. [2018-09-26 21:42:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:42,515 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2018-09-26 21:42:42,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-26 21:42:42,515 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 153 [2018-09-26 21:42:42,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:42,516 INFO L225 Difference]: With dead ends: 165 [2018-09-26 21:42:42,516 INFO L226 Difference]: Without dead ends: 163 [2018-09-26 21:42:42,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:42,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-26 21:42:42,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-09-26 21:42:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-26 21:42:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2018-09-26 21:42:42,522 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 153 [2018-09-26 21:42:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:42,523 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2018-09-26 21:42:42,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-26 21:42:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2018-09-26 21:42:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-26 21:42:42,524 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:42,524 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-09-26 21:42:42,524 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:42,525 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:42,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168108, now seen corresponding path program 31 times [2018-09-26 21:42:42,525 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:42,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:42,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:42,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:42,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:43,359 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:43,359 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 [2018-09-26 21:42:43,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:42:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:43,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:47,706 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:47,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-09-26 21:42:47,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-26 21:42:47,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-26 21:42:47,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:47,717 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 128 states. [2018-09-26 21:42:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:57,137 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2018-09-26 21:42:57,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-26 21:42:57,137 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 158 [2018-09-26 21:42:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:57,138 INFO L225 Difference]: With dead ends: 170 [2018-09-26 21:42:57,139 INFO L226 Difference]: Without dead ends: 168 [2018-09-26 21:42:57,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-26 21:42:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-09-26 21:42:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-26 21:42:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2018-09-26 21:42:57,145 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 158 [2018-09-26 21:42:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:57,145 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2018-09-26 21:42:57,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-26 21:42:57,146 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2018-09-26 21:42:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-26 21:42:57,146 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:57,147 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-09-26 21:42:57,147 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:57,147 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:57,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1450316064, now seen corresponding path program 32 times [2018-09-26 21:42:57,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:57,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:57,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:57,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:42:57,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:58,894 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:58,894 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 [2018-09-26 21:42:58,902 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:42:58,958 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:42:58,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:58,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:04,086 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:04,086 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-09-26 21:43:04,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-26 21:43:04,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-26 21:43:04,102 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:04,102 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand 132 states. [2018-09-26 21:43:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:14,078 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2018-09-26 21:43:14,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-26 21:43:14,079 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 163 [2018-09-26 21:43:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:14,080 INFO L225 Difference]: With dead ends: 175 [2018-09-26 21:43:14,080 INFO L226 Difference]: Without dead ends: 173 [2018-09-26 21:43:14,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-26 21:43:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-09-26 21:43:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-26 21:43:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-09-26 21:43:14,086 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 163 [2018-09-26 21:43:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:14,087 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-09-26 21:43:14,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-26 21:43:14,087 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-09-26 21:43:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-26 21:43:14,088 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:14,088 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-09-26 21:43:14,088 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:14,088 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:14,088 INFO L82 PathProgramCache]: Analyzing trace with hash -2138087700, now seen corresponding path program 33 times [2018-09-26 21:43:14,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:14,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:14,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:14,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:43:14,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:15,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:15,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:15,348 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:43:15,356 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:43:15,409 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-26 21:43:15,409 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:43:15,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:20,326 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:20,326 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-09-26 21:43:20,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-26 21:43:20,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-26 21:43:20,339 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:20,339 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 136 states. [2018-09-26 21:43:31,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:31,142 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2018-09-26 21:43:31,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-26 21:43:31,143 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 168 [2018-09-26 21:43:31,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:31,144 INFO L225 Difference]: With dead ends: 180 [2018-09-26 21:43:31,144 INFO L226 Difference]: Without dead ends: 178 [2018-09-26 21:43:31,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-26 21:43:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-09-26 21:43:31,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-26 21:43:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2018-09-26 21:43:31,151 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 168 [2018-09-26 21:43:31,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:31,151 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2018-09-26 21:43:31,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-26 21:43:31,151 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2018-09-26 21:43:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-26 21:43:31,152 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:31,153 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-09-26 21:43:31,153 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:31,153 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:31,153 INFO L82 PathProgramCache]: Analyzing trace with hash 359536224, now seen corresponding path program 34 times [2018-09-26 21:43:31,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:31,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:31,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:31,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:43:31,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:32,054 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:32,054 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 [2018-09-26 21:43:32,063 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:43:32,099 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:43:32,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:43:32,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:38,239 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:38,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-09-26 21:43:38,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-26 21:43:38,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-26 21:43:38,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:38,257 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 140 states. [2018-09-26 21:43:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:51,222 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2018-09-26 21:43:51,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-26 21:43:51,223 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 173 [2018-09-26 21:43:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:51,223 INFO L225 Difference]: With dead ends: 185 [2018-09-26 21:43:51,224 INFO L226 Difference]: Without dead ends: 183 [2018-09-26 21:43:51,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-26 21:43:51,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-09-26 21:43:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-26 21:43:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2018-09-26 21:43:51,230 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 173 [2018-09-26 21:43:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:51,230 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2018-09-26 21:43:51,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-26 21:43:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2018-09-26 21:43:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-26 21:43:51,231 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:51,231 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-09-26 21:43:51,231 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:51,231 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:51,232 INFO L82 PathProgramCache]: Analyzing trace with hash -400824468, now seen corresponding path program 35 times [2018-09-26 21:43:51,232 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:51,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:51,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:51,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:43:51,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:52,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:52,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:43:52,871 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:43:53,002 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-26 21:43:53,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:43:53,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:58,358 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:58,358 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-09-26 21:43:58,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-26 21:43:58,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-26 21:43:58,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:58,374 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand 144 states. [2018-09-26 21:44:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:12,520 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2018-09-26 21:44:12,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-26 21:44:12,520 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 178 [2018-09-26 21:44:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:12,521 INFO L225 Difference]: With dead ends: 190 [2018-09-26 21:44:12,521 INFO L226 Difference]: Without dead ends: 188 [2018-09-26 21:44:12,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:12,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-26 21:44:12,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-09-26 21:44:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-26 21:44:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2018-09-26 21:44:12,528 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 178 [2018-09-26 21:44:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:12,528 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2018-09-26 21:44:12,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-26 21:44:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2018-09-26 21:44:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-26 21:44:12,529 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:12,529 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-09-26 21:44:12,530 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:12,530 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:12,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1927470560, now seen corresponding path program 36 times [2018-09-26 21:44:12,530 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:12,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:12,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:12,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:12,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:14,079 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:14,079 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 [2018-09-26 21:44:14,087 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:44:14,151 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-26 21:44:14,151 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:14,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:20,473 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:20,473 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-09-26 21:44:20,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-09-26 21:44:20,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-09-26 21:44:20,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:20,491 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 148 states. Received shutdown request... [2018-09-26 21:44:32,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-26 21:44:32,093 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-26 21:44:32,099 WARN L206 ceAbstractionStarter]: Timeout [2018-09-26 21:44:32,099 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:44:32 BoogieIcfgContainer [2018-09-26 21:44:32,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 21:44:32,100 INFO L168 Benchmark]: Toolchain (without parser) took 259983.05 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -102.2 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 113.1 MB). Peak memory consumption was 488.3 MB. Max. memory is 7.1 GB. [2018-09-26 21:44:32,103 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:44:32,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:44:32,103 INFO L168 Benchmark]: Boogie Preprocessor took 26.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:44:32,104 INFO L168 Benchmark]: RCFGBuilder took 415.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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. [2018-09-26 21:44:32,105 INFO L168 Benchmark]: TraceAbstraction took 259492.73 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -102.2 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 92.0 MB). Peak memory consumption was 467.1 MB. Max. memory is 7.1 GB. [2018-09-26 21:44:32,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 415.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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 259492.73 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -102.2 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 92.0 MB). Peak memory consumption was 467.1 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 (184states) and FLOYD_HOARE automaton (currently 60 states, 148 states before enhancement), while ReachableStatesComputation was computing reachable states (144 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 259.4s OverallTime, 38 OverallIterations, 36 TraceHistogramMax, 146.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 383 SDtfs, 9117 SDslu, 8127 SDs, 0 SdLazy, 8206 SolverSat, 1661 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4810 GetRequests, 2072 SyntacticMatches, 0 SemanticMatches, 2738 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=37, 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: 0.2s AutomataMinimizationTime, 37 MinimizatonAttempts, 145 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 109.1s InterpolantComputationTime, 6887 NumberOfCodeBlocks, 6887 NumberOfCodeBlocksAsserted, 440 NumberOfCheckSat, 6813 ConstructedInterpolants, 3366 QuantifiedInterpolants, 8225341 SizeOfPredicates, 774 NumberOfNonLiveVariables, 5904 ConjunctsInSsa, 1476 ConjunctsInUnsatCore, 74 InterpolantComputations, 2 PerfectInterpolantSequences, 1/79033 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-0-2018-09-26_21-44-32-124.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-0-2018-09-26_21-44-32-124.csv Completed graceful shutdown