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/RailwayCrossing.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:03:15,123 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:03:15,125 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:03:15,137 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:03:15,138 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:03:15,139 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:03:15,140 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:03:15,142 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:03:15,144 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:03:15,145 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:03:15,146 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-02 12:03:15,146 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-02 12:03:15,147 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-02 12:03:15,148 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-02 12:03:15,150 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-02 12:03:15,151 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-02 12:03:15,155 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-02 12:03:15,157 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-02 12:03:15,161 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-02 12:03:15,162 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-02 12:03:15,164 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-02 12:03:15,165 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-02 12:03:15,167 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-02 12:03:15,168 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-02 12:03:15,168 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-02 12:03:15,169 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-02 12:03:15,173 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-02 12:03:15,174 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-02 12:03:15,175 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-02 12:03:15,179 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-02 12:03:15,180 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-02 12:03:15,180 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-02 12:03:15,181 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-02 12:03:15,181 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-02 12:03:15,183 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-02 12:03:15,184 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-02 12:03:15,185 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-02 12:03:15,211 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:03:15,211 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:03:15,213 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:03:15,213 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:03:15,214 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:03:15,214 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:03:15,214 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:03:15,214 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:03:15,216 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:03:15,216 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:03:15,216 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:03:15,216 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:03:15,216 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:03:15,217 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:03:15,217 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:03:15,218 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:03:15,218 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:03:15,218 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:03:15,219 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:03:15,219 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:03:15,219 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:03:15,219 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:03:15,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:03:15,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:03:15,220 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:03:15,221 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:03:15,221 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:03:15,221 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:03:15,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:03:15,222 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:03:15,222 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:03:15,295 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:03:15,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:03:15,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:03:15,319 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:03:15,319 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:03:15,320 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl [2018-10-02 12:03:15,321 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl' [2018-10-02 12:03:15,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:03:15,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:03:15,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:03:15,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:03:15,371 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:03:15,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... [2018-10-02 12:03:15,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... [2018-10-02 12:03:15,409 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-02 12:03:15,410 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-02 12:03:15,410 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-02 12:03:15,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:03:15,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:03:15,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:03:15,413 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:03:15,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... [2018-10-02 12:03:15,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... [2018-10-02 12:03:15,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... [2018-10-02 12:03:15,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... [2018-10-02 12:03:15,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... [2018-10-02 12:03:15,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... [2018-10-02 12:03:15,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... [2018-10-02 12:03:15,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:03:15,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:03:15,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:03:15,436 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:03:15,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:03:15,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-10-02 12:03:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-10-02 12:03:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-10-02 12:03:15,801 INFO L337 CfgBuilder]: Using library mode [2018-10-02 12:03:15,802 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:03:15 BoogieIcfgContainer [2018-10-02 12:03:15,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:03:15,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:03:15,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:03:15,808 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:03:15,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:03:15" (1/2) ... [2018-10-02 12:03:15,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4078dbe9 and model type RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:03:15, skipping insertion in model container [2018-10-02 12:03:15,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:03:15" (2/2) ... [2018-10-02 12:03:15,813 INFO L112 eAbstractionObserver]: Analyzing ICFG RailwayCrossing.bpl [2018-10-02 12:03:15,824 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:03:15,834 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:03:15,898 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:03:15,899 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:03:15,900 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:03:15,900 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:03:15,900 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:03:15,900 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:03:15,901 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:03:15,901 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:03:15,901 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:03:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-02 12:03:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-02 12:03:15,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:15,937 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-02 12:03:15,940 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:15,949 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:15,950 INFO L82 PathProgramCache]: Analyzing trace with hash 30496, now seen corresponding path program 1 times [2018-10-02 12:03:15,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:15,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:16,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:16,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:16,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:16,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:03:16,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:03:16,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:03:16,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:03:16,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:16,207 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-02 12:03:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:16,375 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2018-10-02 12:03:16,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:03:16,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-02 12:03:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:16,391 INFO L225 Difference]: With dead ends: 19 [2018-10-02 12:03:16,391 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 12:03:16,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:03:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 12:03:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-10-02 12:03:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-02 12:03:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2018-10-02 12:03:16,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 12 transitions. Word has length 3 [2018-10-02 12:03:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:16,429 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-10-02 12:03:16,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:03:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2018-10-02 12:03:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:03:16,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:16,429 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:03:16,430 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:16,430 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1863215691, now seen corresponding path program 1 times [2018-10-02 12:03:16,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:16,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:16,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:16,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:16,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:16,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:03:16,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:03:16,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:03:16,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:03:16,467 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:16,468 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand 3 states. [2018-10-02 12:03:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:16,485 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2018-10-02 12:03:16,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:03:16,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-02 12:03:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:16,487 INFO L225 Difference]: With dead ends: 16 [2018-10-02 12:03:16,487 INFO L226 Difference]: Without dead ends: 9 [2018-10-02 12:03:16,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:03:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-02 12:03:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-02 12:03:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-02 12:03:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-10-02 12:03:16,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2018-10-02 12:03:16,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:16,492 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-10-02 12:03:16,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:03:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-10-02 12:03:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:03:16,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:16,493 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:03:16,493 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:16,494 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:16,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1926837521, now seen corresponding path program 1 times [2018-10-02 12:03:16,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:16,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:16,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:16,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:16,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:16,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:16,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:16,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:16,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:17,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:17,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-10-02 12:03:17,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:03:17,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:03:17,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:17,051 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 6 states. [2018-10-02 12:03:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:17,371 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2018-10-02 12:03:17,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:03:17,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-10-02 12:03:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:17,372 INFO L225 Difference]: With dead ends: 20 [2018-10-02 12:03:17,373 INFO L226 Difference]: Without dead ends: 18 [2018-10-02 12:03:17,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:03:17,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-02 12:03:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2018-10-02 12:03:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:03:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-10-02 12:03:17,378 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-10-02 12:03:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:17,379 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-10-02 12:03:17,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:03:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-10-02 12:03:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:03:17,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:17,380 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-10-02 12:03:17,381 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:17,381 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:17,381 INFO L82 PathProgramCache]: Analyzing trace with hash 640583104, now seen corresponding path program 2 times [2018-10-02 12:03:17,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:17,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:17,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:17,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:17,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:17,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:17,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:17,485 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:03:17,511 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:03:17,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:17,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:17,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:17,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-02 12:03:17,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:03:17,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:03:17,863 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:17,863 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 8 states. [2018-10-02 12:03:18,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:18,124 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2018-10-02 12:03:18,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:03:18,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-02 12:03:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:18,127 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:03:18,127 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:03:18,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:03:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:03:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-10-02 12:03:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-02 12:03:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2018-10-02 12:03:18,133 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2018-10-02 12:03:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:18,133 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-10-02 12:03:18,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:03:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2018-10-02 12:03:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-02 12:03:18,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:18,135 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-10-02 12:03:18,135 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:18,135 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:18,135 INFO L82 PathProgramCache]: Analyzing trace with hash -297055631, now seen corresponding path program 3 times [2018-10-02 12:03:18,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:18,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:18,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:18,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:18,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:18,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:18,227 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:18,244 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:03:18,275 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-02 12:03:18,275 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:18,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:18,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:18,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-10-02 12:03:18,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:03:18,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:03:18,565 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:18,566 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 10 states. [2018-10-02 12:03:19,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:19,157 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2018-10-02 12:03:19,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:03:19,158 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-02 12:03:19,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:19,159 INFO L225 Difference]: With dead ends: 30 [2018-10-02 12:03:19,159 INFO L226 Difference]: Without dead ends: 28 [2018-10-02 12:03:19,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:03:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-02 12:03:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-10-02 12:03:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:03:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2018-10-02 12:03:19,166 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 18 [2018-10-02 12:03:19,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:19,166 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2018-10-02 12:03:19,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:03:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2018-10-02 12:03:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-02 12:03:19,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:19,167 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-10-02 12:03:19,168 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:19,168 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:19,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2073218144, now seen corresponding path program 4 times [2018-10-02 12:03:19,168 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:19,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:19,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:19,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:19,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:19,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:19,309 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:19,322 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:03:19,336 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:03:19,336 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:19,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:19,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:19,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-02 12:03:19,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:03:19,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:03:19,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:19,740 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand 12 states. [2018-10-02 12:03:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:19,877 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2018-10-02 12:03:19,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:03:19,877 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2018-10-02 12:03:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:19,878 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:03:19,879 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:03:19,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:03:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:03:19,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-10-02 12:03:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-02 12:03:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2018-10-02 12:03:19,885 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 23 [2018-10-02 12:03:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:19,885 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2018-10-02 12:03:19,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:03:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2018-10-02 12:03:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-02 12:03:19,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:19,887 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-10-02 12:03:19,887 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:19,887 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash -609605679, now seen corresponding path program 5 times [2018-10-02 12:03:19,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:19,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:19,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:19,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:19,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:19,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:19,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:20,007 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:03:20,023 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-02 12:03:20,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:20,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:20,610 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:20,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-10-02 12:03:20,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:03:20,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:03:20,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:20,611 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand 14 states. [2018-10-02 12:03:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:20,935 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2018-10-02 12:03:20,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:03:20,937 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2018-10-02 12:03:20,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:20,938 INFO L225 Difference]: With dead ends: 40 [2018-10-02 12:03:20,938 INFO L226 Difference]: Without dead ends: 38 [2018-10-02 12:03:20,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:03:20,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-02 12:03:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-10-02 12:03:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:03:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2018-10-02 12:03:20,944 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 28 [2018-10-02 12:03:20,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:20,945 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2018-10-02 12:03:20,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:03:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2018-10-02 12:03:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-02 12:03:20,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:20,946 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-10-02 12:03:20,946 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:20,947 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:20,947 INFO L82 PathProgramCache]: Analyzing trace with hash -70825216, now seen corresponding path program 6 times [2018-10-02 12:03:20,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:20,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:20,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:20,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:20,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:21,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:21,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:21,129 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:03:21,158 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:03:21,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:21,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:21,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:21,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-10-02 12:03:21,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:03:21,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:03:21,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:21,594 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand 16 states. [2018-10-02 12:03:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:21,868 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2018-10-02 12:03:21,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:03:21,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2018-10-02 12:03:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:21,870 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:03:21,870 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:03:21,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:03:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:03:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-10-02 12:03:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-02 12:03:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2018-10-02 12:03:21,877 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 33 [2018-10-02 12:03:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:21,878 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2018-10-02 12:03:21,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:03:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2018-10-02 12:03:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:03:21,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:21,879 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-10-02 12:03:21,879 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:21,880 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:21,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1872481585, now seen corresponding path program 7 times [2018-10-02 12:03:21,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:21,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:21,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:21,881 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:21,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:22,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:22,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:22,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:22,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:22,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:22,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-10-02 12:03:22,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:03:22,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:03:22,470 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:22,472 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 18 states. [2018-10-02 12:03:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:22,829 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2018-10-02 12:03:22,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:03:22,829 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2018-10-02 12:03:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:22,831 INFO L225 Difference]: With dead ends: 50 [2018-10-02 12:03:22,831 INFO L226 Difference]: Without dead ends: 48 [2018-10-02 12:03:22,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:03:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-02 12:03:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-10-02 12:03:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-02 12:03:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2018-10-02 12:03:22,839 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 38 [2018-10-02 12:03:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:22,840 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2018-10-02 12:03:22,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:03:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-10-02 12:03:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-02 12:03:22,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:22,841 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-10-02 12:03:22,842 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:22,842 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:22,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1776681376, now seen corresponding path program 8 times [2018-10-02 12:03:22,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:22,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:22,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:22,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:22,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:22,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:22,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:22,998 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:03:23,032 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:03:23,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:23,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:23,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:23,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-10-02 12:03:23,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:03:23,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:03:23,372 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:23,374 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 20 states. [2018-10-02 12:03:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:23,603 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2018-10-02 12:03:23,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:03:23,603 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2018-10-02 12:03:23,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:23,605 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:03:23,605 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:03:23,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:03:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:03:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-10-02 12:03:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-02 12:03:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2018-10-02 12:03:23,613 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 43 [2018-10-02 12:03:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:23,613 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2018-10-02 12:03:23,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:03:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2018-10-02 12:03:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-02 12:03:23,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:23,615 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-10-02 12:03:23,615 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:23,615 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:23,615 INFO L82 PathProgramCache]: Analyzing trace with hash -951698799, now seen corresponding path program 9 times [2018-10-02 12:03:23,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:23,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:23,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:23,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:23,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:23,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:23,782 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:23,790 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:03:23,817 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-02 12:03:23,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:23,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:25,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:25,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-10-02 12:03:25,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:03:25,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:03:25,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:25,443 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand 22 states. [2018-10-02 12:03:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:25,708 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2018-10-02 12:03:25,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:03:25,708 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 48 [2018-10-02 12:03:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:25,710 INFO L225 Difference]: With dead ends: 60 [2018-10-02 12:03:25,710 INFO L226 Difference]: Without dead ends: 58 [2018-10-02 12:03:25,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 0.7s impTime [2018-10-02 12:03:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-02 12:03:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-10-02 12:03:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-02 12:03:25,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2018-10-02 12:03:25,717 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 48 [2018-10-02 12:03:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:25,717 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2018-10-02 12:03:25,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:03:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2018-10-02 12:03:25,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-02 12:03:25,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:25,719 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-10-02 12:03:25,719 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:25,719 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:25,719 INFO L82 PathProgramCache]: Analyzing trace with hash -259461056, now seen corresponding path program 10 times [2018-10-02 12:03:25,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:25,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:25,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:25,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:25,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:25,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:25,905 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:25,913 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:03:25,954 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:03:25,955 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:25,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:26,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:26,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-10-02 12:03:26,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:03:26,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:03:26,537 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:26,537 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 24 states. [2018-10-02 12:03:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:26,906 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2018-10-02 12:03:26,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:03:26,906 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2018-10-02 12:03:26,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:26,907 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:03:26,907 INFO L226 Difference]: Without dead ends: 63 [2018-10-02 12:03:26,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:03:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-02 12:03:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-10-02 12:03:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-02 12:03:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2018-10-02 12:03:26,915 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 53 [2018-10-02 12:03:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:26,915 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2018-10-02 12:03:26,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:03:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2018-10-02 12:03:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-02 12:03:26,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:26,917 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-10-02 12:03:26,917 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:26,918 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:26,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1213165553, now seen corresponding path program 11 times [2018-10-02 12:03:26,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:26,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:26,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:26,919 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:26,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:27,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:27,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:27,137 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:03:27,170 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-02 12:03:27,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:27,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:28,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:28,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2018-10-02 12:03:28,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:03:28,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:03:28,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:28,120 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand 26 states. [2018-10-02 12:03:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:28,318 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2018-10-02 12:03:28,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:03:28,318 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 58 [2018-10-02 12:03:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:28,319 INFO L225 Difference]: With dead ends: 70 [2018-10-02 12:03:28,320 INFO L226 Difference]: Without dead ends: 68 [2018-10-02 12:03:28,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.4s impTime [2018-10-02 12:03:28,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-02 12:03:28,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-10-02 12:03:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-02 12:03:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2018-10-02 12:03:28,327 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 58 [2018-10-02 12:03:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:28,327 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2018-10-02 12:03:28,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:03:28,327 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2018-10-02 12:03:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-02 12:03:28,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:28,328 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-10-02 12:03:28,329 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:28,329 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:28,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1043720480, now seen corresponding path program 12 times [2018-10-02 12:03:28,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:28,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:28,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:28,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:28,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:28,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:28,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:28,714 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:03:28,738 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-02 12:03:28,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:28,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:29,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:29,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-10-02 12:03:29,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:03:29,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:03:29,221 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:29,221 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand 28 states. [2018-10-02 12:03:29,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:29,479 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-10-02 12:03:29,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:03:29,479 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 63 [2018-10-02 12:03:29,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:29,480 INFO L225 Difference]: With dead ends: 75 [2018-10-02 12:03:29,480 INFO L226 Difference]: Without dead ends: 73 [2018-10-02 12:03:29,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime [2018-10-02 12:03:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-02 12:03:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-10-02 12:03:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-02 12:03:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2018-10-02 12:03:29,486 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 63 [2018-10-02 12:03:29,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:29,487 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2018-10-02 12:03:29,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:03:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2018-10-02 12:03:29,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-02 12:03:29,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:29,488 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-10-02 12:03:29,489 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:29,489 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:29,489 INFO L82 PathProgramCache]: Analyzing trace with hash 14511441, now seen corresponding path program 13 times [2018-10-02 12:03:29,489 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:29,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:29,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:29,490 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:29,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:29,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:29,709 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:29,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:29,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:30,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:30,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2018-10-02 12:03:30,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:03:30,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:03:30,293 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:30,293 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand 30 states. [2018-10-02 12:03:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:30,561 INFO L93 Difference]: Finished difference Result 80 states and 110 transitions. [2018-10-02 12:03:30,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:03:30,562 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 68 [2018-10-02 12:03:30,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:30,563 INFO L225 Difference]: With dead ends: 80 [2018-10-02 12:03:30,563 INFO L226 Difference]: Without dead ends: 78 [2018-10-02 12:03:30,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:03:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-02 12:03:30,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-10-02 12:03:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-02 12:03:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2018-10-02 12:03:30,570 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 68 [2018-10-02 12:03:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:30,571 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2018-10-02 12:03:30,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:03:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2018-10-02 12:03:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-02 12:03:30,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:30,572 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-10-02 12:03:30,573 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:30,573 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:30,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1220315776, now seen corresponding path program 14 times [2018-10-02 12:03:30,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:30,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:30,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:30,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:30,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:31,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:31,069 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:31,076 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:03:31,098 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:03:31,098 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:31,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:31,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:31,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-10-02 12:03:31,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:03:31,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:03:31,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:31,527 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand 32 states. [2018-10-02 12:03:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:31,838 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2018-10-02 12:03:31,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:03:31,839 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 73 [2018-10-02 12:03:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:31,839 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:03:31,840 INFO L226 Difference]: Without dead ends: 83 [2018-10-02 12:03:31,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:03:31,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-02 12:03:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-10-02 12:03:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-02 12:03:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 109 transitions. [2018-10-02 12:03:31,845 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 109 transitions. Word has length 73 [2018-10-02 12:03:31,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:31,845 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 109 transitions. [2018-10-02 12:03:31,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:03:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 109 transitions. [2018-10-02 12:03:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-02 12:03:31,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:31,847 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-10-02 12:03:31,847 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:31,847 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:31,847 INFO L82 PathProgramCache]: Analyzing trace with hash 127283889, now seen corresponding path program 15 times [2018-10-02 12:03:31,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:31,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:31,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:31,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:31,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:33,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:33,062 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:33,070 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:03:33,129 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-02 12:03:33,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:33,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:33,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:33,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2018-10-02 12:03:33,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:03:33,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:03:33,635 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:33,635 INFO L87 Difference]: Start difference. First operand 79 states and 109 transitions. Second operand 34 states. [2018-10-02 12:03:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:33,941 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2018-10-02 12:03:33,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:03:33,941 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-10-02 12:03:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:33,942 INFO L225 Difference]: With dead ends: 90 [2018-10-02 12:03:33,942 INFO L226 Difference]: Without dead ends: 88 [2018-10-02 12:03:33,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:03:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-02 12:03:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-10-02 12:03:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-02 12:03:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2018-10-02 12:03:33,947 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 78 [2018-10-02 12:03:33,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:33,947 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2018-10-02 12:03:33,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:03:33,947 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2018-10-02 12:03:33,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-02 12:03:33,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:33,948 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-10-02 12:03:33,949 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:33,949 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:33,949 INFO L82 PathProgramCache]: Analyzing trace with hash -233894880, now seen corresponding path program 16 times [2018-10-02 12:03:33,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:33,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:33,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:33,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:33,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:34,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:34,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:34,245 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:03:34,268 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:03:34,268 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:34,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:34,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:34,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-10-02 12:03:34,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:03:34,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:03:34,820 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:34,820 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand 36 states. [2018-10-02 12:03:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:35,252 INFO L93 Difference]: Finished difference Result 95 states and 131 transitions. [2018-10-02 12:03:35,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:03:35,253 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 83 [2018-10-02 12:03:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:35,254 INFO L225 Difference]: With dead ends: 95 [2018-10-02 12:03:35,254 INFO L226 Difference]: Without dead ends: 93 [2018-10-02 12:03:35,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:03:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-02 12:03:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-10-02 12:03:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-02 12:03:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2018-10-02 12:03:35,259 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 83 [2018-10-02 12:03:35,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:35,260 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2018-10-02 12:03:35,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:03:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2018-10-02 12:03:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-02 12:03:35,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:35,261 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-10-02 12:03:35,261 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:35,261 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash -610287599, now seen corresponding path program 17 times [2018-10-02 12:03:35,262 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:35,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:35,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:35,263 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:35,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:35,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:35,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:35,524 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:03:35,562 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-02 12:03:35,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:35,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:36,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:36,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2018-10-02 12:03:36,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:03:36,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:03:36,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:36,304 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand 38 states. [2018-10-02 12:03:36,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:36,612 INFO L93 Difference]: Finished difference Result 100 states and 138 transitions. [2018-10-02 12:03:36,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:03:36,612 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 88 [2018-10-02 12:03:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:36,613 INFO L225 Difference]: With dead ends: 100 [2018-10-02 12:03:36,614 INFO L226 Difference]: Without dead ends: 98 [2018-10-02 12:03:36,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.2s impTime [2018-10-02 12:03:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-02 12:03:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-10-02 12:03:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-02 12:03:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 130 transitions. [2018-10-02 12:03:36,618 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 130 transitions. Word has length 88 [2018-10-02 12:03:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:36,618 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 130 transitions. [2018-10-02 12:03:36,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:03:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 130 transitions. [2018-10-02 12:03:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-02 12:03:36,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:36,620 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-10-02 12:03:36,620 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:36,620 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:36,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2059852480, now seen corresponding path program 18 times [2018-10-02 12:03:36,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:36,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:36,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:36,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:36,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:37,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:37,243 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:37,252 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:03:37,291 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-02 12:03:37,291 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:37,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:37,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:37,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-10-02 12:03:37,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:03:37,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:03:37,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:37,997 INFO L87 Difference]: Start difference. First operand 94 states and 130 transitions. Second operand 40 states. [2018-10-02 12:03:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:38,399 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2018-10-02 12:03:38,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:03:38,399 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 93 [2018-10-02 12:03:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:38,400 INFO L225 Difference]: With dead ends: 105 [2018-10-02 12:03:38,400 INFO L226 Difference]: Without dead ends: 103 [2018-10-02 12:03:38,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime [2018-10-02 12:03:38,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-02 12:03:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-10-02 12:03:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-02 12:03:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2018-10-02 12:03:38,406 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 93 [2018-10-02 12:03:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:38,406 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2018-10-02 12:03:38,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:03:38,406 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2018-10-02 12:03:38,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:03:38,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:38,407 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-10-02 12:03:38,407 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:38,407 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:38,407 INFO L82 PathProgramCache]: Analyzing trace with hash -996141711, now seen corresponding path program 19 times [2018-10-02 12:03:38,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:38,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:38,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:38,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:38,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:38,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:38,773 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:38,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:38,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:39,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:39,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2018-10-02 12:03:39,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:03:39,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:03:39,573 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:39,573 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand 42 states. [2018-10-02 12:03:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:39,955 INFO L93 Difference]: Finished difference Result 110 states and 152 transitions. [2018-10-02 12:03:39,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:03:39,956 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 98 [2018-10-02 12:03:39,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:39,956 INFO L225 Difference]: With dead ends: 110 [2018-10-02 12:03:39,957 INFO L226 Difference]: Without dead ends: 108 [2018-10-02 12:03:39,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:03:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-02 12:03:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-10-02 12:03:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-02 12:03:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2018-10-02 12:03:39,963 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 98 [2018-10-02 12:03:39,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:39,964 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2018-10-02 12:03:39,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:03:39,964 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2018-10-02 12:03:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-02 12:03:39,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:39,965 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-10-02 12:03:39,965 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:39,965 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:39,966 INFO L82 PathProgramCache]: Analyzing trace with hash -511385248, now seen corresponding path program 20 times [2018-10-02 12:03:39,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:39,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:39,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:39,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:39,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:40,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:40,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:40,524 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:03:40,553 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:03:40,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:40,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:43,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:43,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-10-02 12:03:43,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:03:43,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:03:43,265 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:43,265 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand 44 states. [2018-10-02 12:03:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:43,733 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2018-10-02 12:03:43,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:03:43,736 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 103 [2018-10-02 12:03:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:43,738 INFO L225 Difference]: With dead ends: 115 [2018-10-02 12:03:43,738 INFO L226 Difference]: Without dead ends: 113 [2018-10-02 12:03:43,739 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 1.5s impTime [2018-10-02 12:03:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-02 12:03:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-10-02 12:03:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-02 12:03:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 151 transitions. [2018-10-02 12:03:43,744 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 151 transitions. Word has length 103 [2018-10-02 12:03:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:43,744 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 151 transitions. [2018-10-02 12:03:43,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:03:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 151 transitions. [2018-10-02 12:03:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-02 12:03:43,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:43,745 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-10-02 12:03:43,745 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:43,745 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:43,746 INFO L82 PathProgramCache]: Analyzing trace with hash 851260113, now seen corresponding path program 21 times [2018-10-02 12:03:43,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:43,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:43,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:43,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:43,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:44,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:44,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:44,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:03:44,304 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-02 12:03:44,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:44,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:45,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:45,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2018-10-02 12:03:45,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:03:45,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:03:45,809 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:45,809 INFO L87 Difference]: Start difference. First operand 109 states and 151 transitions. Second operand 46 states. [2018-10-02 12:03:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:46,290 INFO L93 Difference]: Finished difference Result 120 states and 166 transitions. [2018-10-02 12:03:46,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:03:46,291 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 108 [2018-10-02 12:03:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:46,292 INFO L225 Difference]: With dead ends: 120 [2018-10-02 12:03:46,292 INFO L226 Difference]: Without dead ends: 118 [2018-10-02 12:03:46,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 0.9s impTime [2018-10-02 12:03:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-02 12:03:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-10-02 12:03:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-02 12:03:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2018-10-02 12:03:46,298 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 158 transitions. Word has length 108 [2018-10-02 12:03:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:46,298 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 158 transitions. [2018-10-02 12:03:46,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:03:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 158 transitions. [2018-10-02 12:03:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-02 12:03:46,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:46,299 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-10-02 12:03:46,300 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:46,300 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:46,300 INFO L82 PathProgramCache]: Analyzing trace with hash -572317696, now seen corresponding path program 22 times [2018-10-02 12:03:46,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:46,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:46,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:46,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:46,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:46,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:46,777 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:46,788 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:03:46,819 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:03:46,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:46,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:47,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:47,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-10-02 12:03:47,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:03:47,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:03:47,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:47,692 INFO L87 Difference]: Start difference. First operand 114 states and 158 transitions. Second operand 48 states. [2018-10-02 12:03:48,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:48,137 INFO L93 Difference]: Finished difference Result 125 states and 173 transitions. [2018-10-02 12:03:48,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:03:48,139 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 113 [2018-10-02 12:03:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:48,139 INFO L225 Difference]: With dead ends: 125 [2018-10-02 12:03:48,139 INFO L226 Difference]: Without dead ends: 123 [2018-10-02 12:03:48,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime [2018-10-02 12:03:48,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-02 12:03:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-10-02 12:03:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-02 12:03:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2018-10-02 12:03:48,145 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 113 [2018-10-02 12:03:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:48,145 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2018-10-02 12:03:48,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:03:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2018-10-02 12:03:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-02 12:03:48,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:48,146 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-10-02 12:03:48,146 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:48,146 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:48,146 INFO L82 PathProgramCache]: Analyzing trace with hash 513611825, now seen corresponding path program 23 times [2018-10-02 12:03:48,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:48,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:48,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:48,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:48,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:48,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:48,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:48,861 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:03:48,908 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-02 12:03:48,908 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:48,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:49,664 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:49,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2018-10-02 12:03:49,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:03:49,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:03:49,665 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:49,665 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 50 states. [2018-10-02 12:03:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:50,029 INFO L93 Difference]: Finished difference Result 130 states and 180 transitions. [2018-10-02 12:03:50,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:03:50,030 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 118 [2018-10-02 12:03:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:50,031 INFO L225 Difference]: With dead ends: 130 [2018-10-02 12:03:50,031 INFO L226 Difference]: Without dead ends: 128 [2018-10-02 12:03:50,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.6s impTime [2018-10-02 12:03:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-02 12:03:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-10-02 12:03:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-02 12:03:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2018-10-02 12:03:50,036 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 118 [2018-10-02 12:03:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:50,037 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2018-10-02 12:03:50,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:03:50,037 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2018-10-02 12:03:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-02 12:03:50,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:50,038 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-10-02 12:03:50,038 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:50,038 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:50,038 INFO L82 PathProgramCache]: Analyzing trace with hash -285501792, now seen corresponding path program 24 times [2018-10-02 12:03:50,038 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:50,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:50,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:50,039 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:50,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:51,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:51,435 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:51,443 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:03:51,497 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-02 12:03:51,497 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:51,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:53,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:53,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-10-02 12:03:53,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:03:53,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:03:53,032 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:53,032 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand 52 states. [2018-10-02 12:03:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:53,440 INFO L93 Difference]: Finished difference Result 135 states and 187 transitions. [2018-10-02 12:03:53,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:03:53,440 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 123 [2018-10-02 12:03:53,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:53,441 INFO L225 Difference]: With dead ends: 135 [2018-10-02 12:03:53,441 INFO L226 Difference]: Without dead ends: 133 [2018-10-02 12:03:53,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.7s impTime [2018-10-02 12:03:53,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-02 12:03:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-10-02 12:03:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-02 12:03:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2018-10-02 12:03:53,446 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 123 [2018-10-02 12:03:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:53,446 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2018-10-02 12:03:53,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:03:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2018-10-02 12:03:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-02 12:03:53,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:53,447 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-10-02 12:03:53,448 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:53,448 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:53,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1768277393, now seen corresponding path program 25 times [2018-10-02 12:03:53,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:53,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:53,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:53,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:53,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:53,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:53,980 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:53,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:54,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:54,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:54,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2018-10-02 12:03:54,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-02 12:03:54,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-02 12:03:54,868 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:54,868 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand 54 states. [2018-10-02 12:03:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:55,335 INFO L93 Difference]: Finished difference Result 140 states and 194 transitions. [2018-10-02 12:03:55,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:03:55,335 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 128 [2018-10-02 12:03:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:55,336 INFO L225 Difference]: With dead ends: 140 [2018-10-02 12:03:55,336 INFO L226 Difference]: Without dead ends: 138 [2018-10-02 12:03:55,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime [2018-10-02 12:03:55,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-02 12:03:55,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-10-02 12:03:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-02 12:03:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2018-10-02 12:03:55,341 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 128 [2018-10-02 12:03:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:55,342 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2018-10-02 12:03:55,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-02 12:03:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2018-10-02 12:03:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-02 12:03:55,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:55,343 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-10-02 12:03:55,343 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:55,343 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:55,343 INFO L82 PathProgramCache]: Analyzing trace with hash -77052608, now seen corresponding path program 26 times [2018-10-02 12:03:55,344 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:55,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:55,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:55,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:03:55,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:55,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:55,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:55,906 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:03:55,939 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:03:55,940 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:55,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:57,644 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:57,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-10-02 12:03:57,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:03:57,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:03:57,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:57,645 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand 56 states. [2018-10-02 12:03:58,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:03:58,073 INFO L93 Difference]: Finished difference Result 145 states and 201 transitions. [2018-10-02 12:03:58,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:03:58,073 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 133 [2018-10-02 12:03:58,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:03:58,074 INFO L225 Difference]: With dead ends: 145 [2018-10-02 12:03:58,074 INFO L226 Difference]: Without dead ends: 143 [2018-10-02 12:03:58,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.1s impTime [2018-10-02 12:03:58,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-02 12:03:58,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-10-02 12:03:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-02 12:03:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2018-10-02 12:03:58,080 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 133 [2018-10-02 12:03:58,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:03:58,081 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2018-10-02 12:03:58,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:03:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2018-10-02 12:03:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-02 12:03:58,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:03:58,082 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-10-02 12:03:58,082 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:03:58,082 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:03:58,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1019034353, now seen corresponding path program 27 times [2018-10-02 12:03:58,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:03:58,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:03:58,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:58,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:03:58,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:03:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:03:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:58,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:03:58,716 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:03:58,724 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:03:58,782 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-02 12:03:58,782 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:03:58,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:03:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:03:59,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:03:59,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2018-10-02 12:03:59,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-02 12:03:59,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-02 12:03:59,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:03:59,695 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand 58 states. [2018-10-02 12:04:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:00,224 INFO L93 Difference]: Finished difference Result 150 states and 208 transitions. [2018-10-02 12:04:00,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:04:00,224 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 138 [2018-10-02 12:04:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:00,225 INFO L225 Difference]: With dead ends: 150 [2018-10-02 12:04:00,225 INFO L226 Difference]: Without dead ends: 148 [2018-10-02 12:04:00,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime [2018-10-02 12:04:00,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-02 12:04:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-10-02 12:04:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-02 12:04:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2018-10-02 12:04:00,232 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 138 [2018-10-02 12:04:00,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:00,232 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2018-10-02 12:04:00,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-02 12:04:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2018-10-02 12:04:00,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-02 12:04:00,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:00,234 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-10-02 12:04:00,234 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:00,234 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:00,234 INFO L82 PathProgramCache]: Analyzing trace with hash -247256096, now seen corresponding path program 28 times [2018-10-02 12:04:00,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:00,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:00,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:00,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:00,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:00,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:00,842 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:00,852 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:04:00,890 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:04:00,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:00,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:02,260 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:02,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-10-02 12:04:02,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-02 12:04:02,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-02 12:04:02,261 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:02,261 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 60 states. [2018-10-02 12:04:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:03,072 INFO L93 Difference]: Finished difference Result 155 states and 215 transitions. [2018-10-02 12:04:03,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:04:03,072 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 143 [2018-10-02 12:04:03,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:03,073 INFO L225 Difference]: With dead ends: 155 [2018-10-02 12:04:03,073 INFO L226 Difference]: Without dead ends: 153 [2018-10-02 12:04:03,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime [2018-10-02 12:04:03,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-02 12:04:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-10-02 12:04:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-02 12:04:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 207 transitions. [2018-10-02 12:04:03,080 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 207 transitions. Word has length 143 [2018-10-02 12:04:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:03,080 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 207 transitions. [2018-10-02 12:04:03,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-02 12:04:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 207 transitions. [2018-10-02 12:04:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-02 12:04:03,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:03,081 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-10-02 12:04:03,082 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:03,082 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:03,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1791588433, now seen corresponding path program 29 times [2018-10-02 12:04:03,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:03,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:03,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:03,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:03,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:04,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:04,294 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:04,302 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:04:04,368 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-02 12:04:04,369 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:04,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:05,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:05,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2018-10-02 12:04:05,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:04:05,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:04:05,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:05,352 INFO L87 Difference]: Start difference. First operand 149 states and 207 transitions. Second operand 62 states. [2018-10-02 12:04:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:05,989 INFO L93 Difference]: Finished difference Result 160 states and 222 transitions. [2018-10-02 12:04:05,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:04:05,989 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 148 [2018-10-02 12:04:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:05,991 INFO L225 Difference]: With dead ends: 160 [2018-10-02 12:04:05,991 INFO L226 Difference]: Without dead ends: 158 [2018-10-02 12:04:05,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime [2018-10-02 12:04:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-02 12:04:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-10-02 12:04:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-02 12:04:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 214 transitions. [2018-10-02 12:04:05,997 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 214 transitions. Word has length 148 [2018-10-02 12:04:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:05,997 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 214 transitions. [2018-10-02 12:04:05,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:04:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 214 transitions. [2018-10-02 12:04:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-02 12:04:05,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:05,998 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-10-02 12:04:05,998 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:05,999 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:05,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1713785472, now seen corresponding path program 30 times [2018-10-02 12:04:05,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:05,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:06,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:06,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:06,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:06,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:06,850 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:06,858 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:04:06,920 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-02 12:04:06,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:06,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:08,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:08,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-10-02 12:04:08,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-02 12:04:08,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-02 12:04:08,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:08,162 INFO L87 Difference]: Start difference. First operand 154 states and 214 transitions. Second operand 64 states. [2018-10-02 12:04:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:08,810 INFO L93 Difference]: Finished difference Result 165 states and 229 transitions. [2018-10-02 12:04:08,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:04:08,811 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 153 [2018-10-02 12:04:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:08,812 INFO L225 Difference]: With dead ends: 165 [2018-10-02 12:04:08,812 INFO L226 Difference]: Without dead ends: 163 [2018-10-02 12:04:08,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime [2018-10-02 12:04:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-02 12:04:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-10-02 12:04:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-02 12:04:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 221 transitions. [2018-10-02 12:04:08,818 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 221 transitions. Word has length 153 [2018-10-02 12:04:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:08,819 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 221 transitions. [2018-10-02 12:04:08,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-02 12:04:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 221 transitions. [2018-10-02 12:04:08,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-02 12:04:08,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:08,820 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-10-02 12:04:08,820 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:08,821 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:08,821 INFO L82 PathProgramCache]: Analyzing trace with hash -835682895, now seen corresponding path program 31 times [2018-10-02 12:04:08,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:08,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:08,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:08,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:08,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:09,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:09,430 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:09,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:09,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:10,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:10,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2018-10-02 12:04:10,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-02 12:04:10,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-02 12:04:10,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:10,533 INFO L87 Difference]: Start difference. First operand 159 states and 221 transitions. Second operand 66 states. [2018-10-02 12:04:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:11,686 INFO L93 Difference]: Finished difference Result 170 states and 236 transitions. [2018-10-02 12:04:11,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:04:11,686 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 158 [2018-10-02 12:04:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:11,687 INFO L225 Difference]: With dead ends: 170 [2018-10-02 12:04:11,687 INFO L226 Difference]: Without dead ends: 168 [2018-10-02 12:04:11,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime [2018-10-02 12:04:11,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-02 12:04:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-10-02 12:04:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-02 12:04:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 228 transitions. [2018-10-02 12:04:11,694 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 228 transitions. Word has length 158 [2018-10-02 12:04:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:11,694 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 228 transitions. [2018-10-02 12:04:11,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-02 12:04:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 228 transitions. [2018-10-02 12:04:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-02 12:04:11,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:11,695 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-10-02 12:04:11,696 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:11,696 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:11,696 INFO L82 PathProgramCache]: Analyzing trace with hash 925606176, now seen corresponding path program 32 times [2018-10-02 12:04:11,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:11,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:11,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:11,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:11,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:12,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:12,241 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:12,249 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:04:12,299 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:04:12,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:12,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:13,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:13,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-10-02 12:04:13,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:04:13,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:04:13,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:13,588 INFO L87 Difference]: Start difference. First operand 164 states and 228 transitions. Second operand 68 states. [2018-10-02 12:04:14,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:14,232 INFO L93 Difference]: Finished difference Result 175 states and 243 transitions. [2018-10-02 12:04:14,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:04:14,232 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 163 [2018-10-02 12:04:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:14,233 INFO L225 Difference]: With dead ends: 175 [2018-10-02 12:04:14,233 INFO L226 Difference]: Without dead ends: 173 [2018-10-02 12:04:14,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:04:14,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-02 12:04:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-10-02 12:04:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-02 12:04:14,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 235 transitions. [2018-10-02 12:04:14,240 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 235 transitions. Word has length 163 [2018-10-02 12:04:14,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:14,240 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 235 transitions. [2018-10-02 12:04:14,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:04:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 235 transitions. [2018-10-02 12:04:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-02 12:04:14,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:14,242 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-10-02 12:04:14,242 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:14,242 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1441248495, now seen corresponding path program 33 times [2018-10-02 12:04:14,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:14,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:14,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:14,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:14,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:15,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:15,968 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:15,977 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:04:16,056 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-02 12:04:16,056 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:16,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:17,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:17,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2018-10-02 12:04:17,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-02 12:04:17,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-02 12:04:17,218 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:17,218 INFO L87 Difference]: Start difference. First operand 169 states and 235 transitions. Second operand 70 states. [2018-10-02 12:04:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:17,908 INFO L93 Difference]: Finished difference Result 180 states and 250 transitions. [2018-10-02 12:04:17,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:04:17,909 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 168 [2018-10-02 12:04:17,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:17,910 INFO L225 Difference]: With dead ends: 180 [2018-10-02 12:04:17,910 INFO L226 Difference]: Without dead ends: 178 [2018-10-02 12:04:17,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.8s impTime [2018-10-02 12:04:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-02 12:04:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-10-02 12:04:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-02 12:04:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 242 transitions. [2018-10-02 12:04:17,917 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 242 transitions. Word has length 168 [2018-10-02 12:04:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:17,917 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 242 transitions. [2018-10-02 12:04:17,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-02 12:04:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 242 transitions. [2018-10-02 12:04:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-02 12:04:17,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:17,919 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-10-02 12:04:17,919 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:17,919 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:17,919 INFO L82 PathProgramCache]: Analyzing trace with hash 686632896, now seen corresponding path program 34 times [2018-10-02 12:04:17,919 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:17,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:17,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:17,920 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:17,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:18,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:18,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:18,814 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:04:18,860 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:04:18,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:18,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:20,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:20,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-10-02 12:04:20,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-02 12:04:20,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-02 12:04:20,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:20,192 INFO L87 Difference]: Start difference. First operand 174 states and 242 transitions. Second operand 72 states. [2018-10-02 12:04:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:20,814 INFO L93 Difference]: Finished difference Result 185 states and 257 transitions. [2018-10-02 12:04:20,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:04:20,814 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 173 [2018-10-02 12:04:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:20,815 INFO L225 Difference]: With dead ends: 185 [2018-10-02 12:04:20,815 INFO L226 Difference]: Without dead ends: 183 [2018-10-02 12:04:20,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime [2018-10-02 12:04:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-02 12:04:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-10-02 12:04:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-02 12:04:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 249 transitions. [2018-10-02 12:04:20,821 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 249 transitions. Word has length 173 [2018-10-02 12:04:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:20,821 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 249 transitions. [2018-10-02 12:04:20,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-02 12:04:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 249 transitions. [2018-10-02 12:04:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-02 12:04:20,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:20,823 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-10-02 12:04:20,823 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:20,823 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:20,823 INFO L82 PathProgramCache]: Analyzing trace with hash 170319985, now seen corresponding path program 35 times [2018-10-02 12:04:20,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:20,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:20,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:20,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:20,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:22,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:22,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:22,473 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:04:22,583 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-02 12:04:22,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:22,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:25,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:25,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 73 [2018-10-02 12:04:25,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-02 12:04:25,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-02 12:04:25,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:25,069 INFO L87 Difference]: Start difference. First operand 179 states and 249 transitions. Second operand 74 states. [2018-10-02 12:04:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:25,834 INFO L93 Difference]: Finished difference Result 190 states and 264 transitions. [2018-10-02 12:04:25,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:04:25,834 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 178 [2018-10-02 12:04:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:25,835 INFO L225 Difference]: With dead ends: 190 [2018-10-02 12:04:25,835 INFO L226 Difference]: Without dead ends: 188 [2018-10-02 12:04:25,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 2.3s impTime [2018-10-02 12:04:25,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-02 12:04:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-10-02 12:04:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-02 12:04:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 256 transitions. [2018-10-02 12:04:25,842 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 256 transitions. Word has length 178 [2018-10-02 12:04:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:25,842 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 256 transitions. [2018-10-02 12:04:25,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-02 12:04:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 256 transitions. [2018-10-02 12:04:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-02 12:04:25,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:25,843 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-10-02 12:04:25,844 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:25,844 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2021329312, now seen corresponding path program 36 times [2018-10-02 12:04:25,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:25,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:25,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:25,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:25,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:27,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:27,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:27,028 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:04:27,111 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-02 12:04:27,112 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:27,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:29,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:29,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-10-02 12:04:29,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-02 12:04:29,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-02 12:04:29,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:29,060 INFO L87 Difference]: Start difference. First operand 184 states and 256 transitions. Second operand 76 states. [2018-10-02 12:04:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:29,740 INFO L93 Difference]: Finished difference Result 195 states and 271 transitions. [2018-10-02 12:04:29,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:04:29,740 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 183 [2018-10-02 12:04:29,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:29,741 INFO L225 Difference]: With dead ends: 195 [2018-10-02 12:04:29,742 INFO L226 Difference]: Without dead ends: 193 [2018-10-02 12:04:29,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 1.9s impTime [2018-10-02 12:04:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-02 12:04:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-10-02 12:04:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-02 12:04:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2018-10-02 12:04:29,748 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 183 [2018-10-02 12:04:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:29,748 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2018-10-02 12:04:29,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-02 12:04:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2018-10-02 12:04:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-02 12:04:29,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:29,750 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-10-02 12:04:29,750 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:29,750 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:29,750 INFO L82 PathProgramCache]: Analyzing trace with hash 578960849, now seen corresponding path program 37 times [2018-10-02 12:04:29,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:29,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:29,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:29,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:29,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:32,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:32,253 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:32,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:32,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:33,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:33,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77 [2018-10-02 12:04:33,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-02 12:04:33,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-02 12:04:33,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:33,803 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand 78 states. [2018-10-02 12:04:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:34,528 INFO L93 Difference]: Finished difference Result 200 states and 278 transitions. [2018-10-02 12:04:34,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:04:34,529 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 188 [2018-10-02 12:04:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:34,530 INFO L225 Difference]: With dead ends: 200 [2018-10-02 12:04:34,530 INFO L226 Difference]: Without dead ends: 198 [2018-10-02 12:04:34,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 2.6s impTime [2018-10-02 12:04:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-02 12:04:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-10-02 12:04:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-02 12:04:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2018-10-02 12:04:34,536 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 188 [2018-10-02 12:04:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:34,537 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2018-10-02 12:04:34,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-02 12:04:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2018-10-02 12:04:34,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-02 12:04:34,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:34,538 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-10-02 12:04:34,538 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:34,538 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:34,538 INFO L82 PathProgramCache]: Analyzing trace with hash -963840768, now seen corresponding path program 38 times [2018-10-02 12:04:34,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:34,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:34,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:34,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:34,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:35,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:35,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:35,394 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:04:35,457 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:04:35,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:35,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:37,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:37,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-10-02 12:04:37,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-02 12:04:37,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-02 12:04:37,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:37,365 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand 80 states. [2018-10-02 12:04:38,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:38,188 INFO L93 Difference]: Finished difference Result 205 states and 285 transitions. [2018-10-02 12:04:38,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:04:38,188 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 193 [2018-10-02 12:04:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:38,189 INFO L225 Difference]: With dead ends: 205 [2018-10-02 12:04:38,189 INFO L226 Difference]: Without dead ends: 203 [2018-10-02 12:04:38,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.5s impTime [2018-10-02 12:04:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-02 12:04:38,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-10-02 12:04:38,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-02 12:04:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 277 transitions. [2018-10-02 12:04:38,195 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 277 transitions. Word has length 193 [2018-10-02 12:04:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:38,195 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 277 transitions. [2018-10-02 12:04:38,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-02 12:04:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 277 transitions. [2018-10-02 12:04:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-02 12:04:38,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:38,196 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-10-02 12:04:38,197 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:38,197 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1345297615, now seen corresponding path program 39 times [2018-10-02 12:04:38,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:38,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:38,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:38,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:38,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:39,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:39,253 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:39,260 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:04:39,348 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-02 12:04:39,348 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:39,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:40,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:40,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 81 [2018-10-02 12:04:40,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-02 12:04:40,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-02 12:04:40,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:40,910 INFO L87 Difference]: Start difference. First operand 199 states and 277 transitions. Second operand 82 states. [2018-10-02 12:04:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:41,869 INFO L93 Difference]: Finished difference Result 210 states and 292 transitions. [2018-10-02 12:04:41,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:04:41,870 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 198 [2018-10-02 12:04:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:41,871 INFO L225 Difference]: With dead ends: 210 [2018-10-02 12:04:41,871 INFO L226 Difference]: Without dead ends: 208 [2018-10-02 12:04:41,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime [2018-10-02 12:04:41,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-02 12:04:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-10-02 12:04:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-02 12:04:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 284 transitions. [2018-10-02 12:04:41,877 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 284 transitions. Word has length 198 [2018-10-02 12:04:41,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:41,878 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 284 transitions. [2018-10-02 12:04:41,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-02 12:04:41,878 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 284 transitions. [2018-10-02 12:04:41,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-02 12:04:41,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:41,879 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-10-02 12:04:41,879 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:41,880 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:41,880 INFO L82 PathProgramCache]: Analyzing trace with hash 555690912, now seen corresponding path program 40 times [2018-10-02 12:04:41,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:41,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:41,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:41,881 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:41,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:42,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:42,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:42,743 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:04:42,794 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:04:42,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:42,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:44,491 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:44,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-10-02 12:04:44,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-02 12:04:44,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-02 12:04:44,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:44,492 INFO L87 Difference]: Start difference. First operand 204 states and 284 transitions. Second operand 84 states. [2018-10-02 12:04:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:45,306 INFO L93 Difference]: Finished difference Result 215 states and 299 transitions. [2018-10-02 12:04:45,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:04:45,306 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 203 [2018-10-02 12:04:45,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:45,307 INFO L225 Difference]: With dead ends: 215 [2018-10-02 12:04:45,307 INFO L226 Difference]: Without dead ends: 213 [2018-10-02 12:04:45,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime [2018-10-02 12:04:45,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-02 12:04:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-10-02 12:04:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-02 12:04:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 291 transitions. [2018-10-02 12:04:45,312 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 291 transitions. Word has length 203 [2018-10-02 12:04:45,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:45,313 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 291 transitions. [2018-10-02 12:04:45,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-02 12:04:45,313 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 291 transitions. [2018-10-02 12:04:45,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-02 12:04:45,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:45,314 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-10-02 12:04:45,314 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:45,314 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:45,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1463242897, now seen corresponding path program 41 times [2018-10-02 12:04:45,314 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:45,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:45,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:45,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:45,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:46,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:46,031 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:46,039 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:04:46,126 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-02 12:04:46,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:46,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:50,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:50,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 85 [2018-10-02 12:04:50,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-02 12:04:50,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-02 12:04:50,356 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:50,356 INFO L87 Difference]: Start difference. First operand 209 states and 291 transitions. Second operand 86 states. [2018-10-02 12:04:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:51,189 INFO L93 Difference]: Finished difference Result 220 states and 306 transitions. [2018-10-02 12:04:51,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:04:51,190 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 208 [2018-10-02 12:04:51,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:51,191 INFO L225 Difference]: With dead ends: 220 [2018-10-02 12:04:51,191 INFO L226 Difference]: Without dead ends: 218 [2018-10-02 12:04:51,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time 3.3s impTime [2018-10-02 12:04:51,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-02 12:04:51,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-10-02 12:04:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-02 12:04:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 298 transitions. [2018-10-02 12:04:51,198 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 298 transitions. Word has length 208 [2018-10-02 12:04:51,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:51,199 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 298 transitions. [2018-10-02 12:04:51,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-02 12:04:51,199 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 298 transitions. [2018-10-02 12:04:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-02 12:04:51,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:51,200 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-10-02 12:04:51,200 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:51,200 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash 970299968, now seen corresponding path program 42 times [2018-10-02 12:04:51,201 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:51,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:51,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:51,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:51,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:52,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:52,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:52,402 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:04:52,498 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-02 12:04:52,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:04:52,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:54,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:54,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-10-02 12:04:54,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-02 12:04:54,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-02 12:04:54,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:54,491 INFO L87 Difference]: Start difference. First operand 214 states and 298 transitions. Second operand 88 states. [2018-10-02 12:04:55,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:55,441 INFO L93 Difference]: Finished difference Result 225 states and 313 transitions. [2018-10-02 12:04:55,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:04:55,441 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 213 [2018-10-02 12:04:55,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:55,442 INFO L225 Difference]: With dead ends: 225 [2018-10-02 12:04:55,442 INFO L226 Difference]: Without dead ends: 223 [2018-10-02 12:04:55,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.0s impTime [2018-10-02 12:04:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-02 12:04:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-10-02 12:04:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-02 12:04:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 305 transitions. [2018-10-02 12:04:55,447 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 305 transitions. Word has length 213 [2018-10-02 12:04:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:55,447 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 305 transitions. [2018-10-02 12:04:55,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-02 12:04:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 305 transitions. [2018-10-02 12:04:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-02 12:04:55,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:55,449 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-10-02 12:04:55,449 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:55,449 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:55,449 INFO L82 PathProgramCache]: Analyzing trace with hash 106759665, now seen corresponding path program 43 times [2018-10-02 12:04:55,449 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:55,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:55,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:55,450 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:04:55,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:56,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:04:56,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:04:56,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:04:56,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:04:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:04:58,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:04:58,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 89 [2018-10-02 12:04:58,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-02 12:04:58,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-02 12:04:58,184 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:04:58,184 INFO L87 Difference]: Start difference. First operand 219 states and 305 transitions. Second operand 90 states. [2018-10-02 12:04:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:04:59,186 INFO L93 Difference]: Finished difference Result 230 states and 320 transitions. [2018-10-02 12:04:59,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:04:59,186 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 218 [2018-10-02 12:04:59,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:04:59,187 INFO L225 Difference]: With dead ends: 230 [2018-10-02 12:04:59,187 INFO L226 Difference]: Without dead ends: 228 [2018-10-02 12:04:59,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime [2018-10-02 12:04:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-02 12:04:59,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-10-02 12:04:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-02 12:04:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 312 transitions. [2018-10-02 12:04:59,192 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 312 transitions. Word has length 218 [2018-10-02 12:04:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:04:59,193 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 312 transitions. [2018-10-02 12:04:59,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-02 12:04:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 312 transitions. [2018-10-02 12:04:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-02 12:04:59,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:04:59,194 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-10-02 12:04:59,194 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:04:59,194 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:04:59,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1161150240, now seen corresponding path program 44 times [2018-10-02 12:04:59,194 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:04:59,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:04:59,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:59,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:04:59,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:04:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:00,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:00,022 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:00,031 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:05:00,086 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:05:00,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:00,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:01,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:01,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-10-02 12:05:01,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-02 12:05:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-02 12:05:01,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:01,602 INFO L87 Difference]: Start difference. First operand 224 states and 312 transitions. Second operand 92 states. [2018-10-02 12:05:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:02,506 INFO L93 Difference]: Finished difference Result 235 states and 327 transitions. [2018-10-02 12:05:02,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:05:02,506 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 223 [2018-10-02 12:05:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:02,508 INFO L225 Difference]: With dead ends: 235 [2018-10-02 12:05:02,508 INFO L226 Difference]: Without dead ends: 233 [2018-10-02 12:05:02,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime [2018-10-02 12:05:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-02 12:05:02,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-10-02 12:05:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-02 12:05:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 319 transitions. [2018-10-02 12:05:02,513 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 319 transitions. Word has length 223 [2018-10-02 12:05:02,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:02,513 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 319 transitions. [2018-10-02 12:05:02,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-02 12:05:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 319 transitions. [2018-10-02 12:05:02,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-02 12:05:02,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:02,514 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-10-02 12:05:02,515 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:02,515 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:02,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1399292753, now seen corresponding path program 45 times [2018-10-02 12:05:02,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:02,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:02,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:02,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:02,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:03,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:03,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:03,383 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:05:03,480 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-02 12:05:03,480 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:03,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:05,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:05,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2018-10-02 12:05:05,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-02 12:05:05,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-02 12:05:05,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:05,211 INFO L87 Difference]: Start difference. First operand 229 states and 319 transitions. Second operand 94 states. [2018-10-02 12:05:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:06,198 INFO L93 Difference]: Finished difference Result 240 states and 334 transitions. [2018-10-02 12:05:06,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:05:06,198 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 228 [2018-10-02 12:05:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:06,200 INFO L225 Difference]: With dead ends: 240 [2018-10-02 12:05:06,200 INFO L226 Difference]: Without dead ends: 238 [2018-10-02 12:05:06,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime [2018-10-02 12:05:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-02 12:05:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-10-02 12:05:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-02 12:05:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 326 transitions. [2018-10-02 12:05:06,207 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 326 transitions. Word has length 228 [2018-10-02 12:05:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:06,208 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 326 transitions. [2018-10-02 12:05:06,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-02 12:05:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 326 transitions. [2018-10-02 12:05:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-02 12:05:06,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:06,209 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-10-02 12:05:06,209 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:06,209 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:06,210 INFO L82 PathProgramCache]: Analyzing trace with hash -174645376, now seen corresponding path program 46 times [2018-10-02 12:05:06,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:06,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:06,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:06,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:06,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:07,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:07,624 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:07,633 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:05:07,707 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:05:07,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:07,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:09,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:09,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-10-02 12:05:09,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-02 12:05:09,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-02 12:05:09,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:09,909 INFO L87 Difference]: Start difference. First operand 234 states and 326 transitions. Second operand 96 states. [2018-10-02 12:05:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:10,805 INFO L93 Difference]: Finished difference Result 245 states and 341 transitions. [2018-10-02 12:05:10,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:05:10,805 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 233 [2018-10-02 12:05:10,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:10,806 INFO L225 Difference]: With dead ends: 245 [2018-10-02 12:05:10,806 INFO L226 Difference]: Without dead ends: 243 [2018-10-02 12:05:10,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.2s impTime [2018-10-02 12:05:10,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-02 12:05:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-10-02 12:05:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-02 12:05:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 333 transitions. [2018-10-02 12:05:10,814 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 333 transitions. Word has length 233 [2018-10-02 12:05:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:10,814 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 333 transitions. [2018-10-02 12:05:10,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-02 12:05:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 333 transitions. [2018-10-02 12:05:10,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-02 12:05:10,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:10,816 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-10-02 12:05:10,816 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:10,816 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:10,816 INFO L82 PathProgramCache]: Analyzing trace with hash -587413327, now seen corresponding path program 47 times [2018-10-02 12:05:10,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:10,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:10,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:10,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:10,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:12,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:12,172 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:12,178 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:05:12,281 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-02 12:05:12,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:12,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:14,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:14,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2018-10-02 12:05:14,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-02 12:05:14,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-02 12:05:14,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:14,299 INFO L87 Difference]: Start difference. First operand 239 states and 333 transitions. Second operand 98 states. [2018-10-02 12:05:15,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:15,496 INFO L93 Difference]: Finished difference Result 250 states and 348 transitions. [2018-10-02 12:05:15,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:05:15,496 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 238 [2018-10-02 12:05:15,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:15,498 INFO L225 Difference]: With dead ends: 250 [2018-10-02 12:05:15,498 INFO L226 Difference]: Without dead ends: 248 [2018-10-02 12:05:15,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.2s impTime [2018-10-02 12:05:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-02 12:05:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-10-02 12:05:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-02 12:05:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 340 transitions. [2018-10-02 12:05:15,505 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 340 transitions. Word has length 238 [2018-10-02 12:05:15,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:15,505 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 340 transitions. [2018-10-02 12:05:15,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-02 12:05:15,506 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 340 transitions. [2018-10-02 12:05:15,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-02 12:05:15,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:15,507 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-10-02 12:05:15,507 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:15,507 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:15,508 INFO L82 PathProgramCache]: Analyzing trace with hash -2091502048, now seen corresponding path program 48 times [2018-10-02 12:05:15,508 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:15,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:15,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:15,508 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:15,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:16,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:16,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:16,393 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:05:16,501 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-02 12:05:16,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:16,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:18,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:18,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-10-02 12:05:18,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-02 12:05:18,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-02 12:05:18,581 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:18,581 INFO L87 Difference]: Start difference. First operand 244 states and 340 transitions. Second operand 100 states. [2018-10-02 12:05:19,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:19,848 INFO L93 Difference]: Finished difference Result 255 states and 355 transitions. [2018-10-02 12:05:19,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-02 12:05:19,848 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 243 [2018-10-02 12:05:19,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:19,849 INFO L225 Difference]: With dead ends: 255 [2018-10-02 12:05:19,849 INFO L226 Difference]: Without dead ends: 253 [2018-10-02 12:05:19,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.8s impTime [2018-10-02 12:05:19,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-02 12:05:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-10-02 12:05:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-02 12:05:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 347 transitions. [2018-10-02 12:05:19,854 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 347 transitions. Word has length 243 [2018-10-02 12:05:19,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:19,854 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 347 transitions. [2018-10-02 12:05:19,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-02 12:05:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 347 transitions. [2018-10-02 12:05:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-02 12:05:19,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:19,856 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-10-02 12:05:19,856 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:19,856 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1438460399, now seen corresponding path program 49 times [2018-10-02 12:05:19,856 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:19,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:19,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:19,857 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:19,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:20,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:20,958 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:20,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:21,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:23,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:23,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 101 [2018-10-02 12:05:23,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-02 12:05:23,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-02 12:05:23,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:23,161 INFO L87 Difference]: Start difference. First operand 249 states and 347 transitions. Second operand 102 states. [2018-10-02 12:05:24,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:24,287 INFO L93 Difference]: Finished difference Result 260 states and 362 transitions. [2018-10-02 12:05:24,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:05:24,288 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 248 [2018-10-02 12:05:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:24,289 INFO L225 Difference]: With dead ends: 260 [2018-10-02 12:05:24,289 INFO L226 Difference]: Without dead ends: 258 [2018-10-02 12:05:24,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.0s impTime [2018-10-02 12:05:24,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-02 12:05:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2018-10-02 12:05:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-02 12:05:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 354 transitions. [2018-10-02 12:05:24,296 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 354 transitions. Word has length 248 [2018-10-02 12:05:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:24,297 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 354 transitions. [2018-10-02 12:05:24,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-02 12:05:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 354 transitions. [2018-10-02 12:05:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-02 12:05:24,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:24,303 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1] [2018-10-02 12:05:24,303 INFO L423 AbstractCegarLoop]: === Iteration 52 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:24,303 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:24,304 INFO L82 PathProgramCache]: Analyzing trace with hash -459176768, now seen corresponding path program 50 times [2018-10-02 12:05:24,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:24,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:24,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:24,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:24,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:25,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:25,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:25,504 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:05:25,565 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:05:25,565 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:25,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:27,366 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:27,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-10-02 12:05:27,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-02 12:05:27,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-02 12:05:27,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:27,368 INFO L87 Difference]: Start difference. First operand 254 states and 354 transitions. Second operand 104 states. [2018-10-02 12:05:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:28,548 INFO L93 Difference]: Finished difference Result 265 states and 369 transitions. [2018-10-02 12:05:28,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:05:28,548 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 253 [2018-10-02 12:05:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:28,550 INFO L225 Difference]: With dead ends: 265 [2018-10-02 12:05:28,550 INFO L226 Difference]: Without dead ends: 263 [2018-10-02 12:05:28,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.7s impTime [2018-10-02 12:05:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-02 12:05:28,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-10-02 12:05:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-02 12:05:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 361 transitions. [2018-10-02 12:05:28,557 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 361 transitions. Word has length 253 [2018-10-02 12:05:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:28,557 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 361 transitions. [2018-10-02 12:05:28,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-02 12:05:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 361 transitions. [2018-10-02 12:05:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-02 12:05:28,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:28,559 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 1, 1, 1] [2018-10-02 12:05:28,559 INFO L423 AbstractCegarLoop]: === Iteration 53 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:28,559 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053071, now seen corresponding path program 51 times [2018-10-02 12:05:28,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:28,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:28,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:28,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:28,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:29,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:29,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:29,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:05:30,073 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-02 12:05:30,074 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:30,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:32,302 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:32,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2018-10-02 12:05:32,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-02 12:05:32,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-02 12:05:32,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:32,304 INFO L87 Difference]: Start difference. First operand 259 states and 361 transitions. Second operand 106 states. [2018-10-02 12:05:33,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:33,608 INFO L93 Difference]: Finished difference Result 270 states and 376 transitions. [2018-10-02 12:05:33,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-02 12:05:33,608 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 258 [2018-10-02 12:05:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:33,609 INFO L225 Difference]: With dead ends: 270 [2018-10-02 12:05:33,609 INFO L226 Difference]: Without dead ends: 268 [2018-10-02 12:05:33,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.3s impTime [2018-10-02 12:05:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-10-02 12:05:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2018-10-02 12:05:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-02 12:05:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 368 transitions. [2018-10-02 12:05:33,614 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 368 transitions. Word has length 258 [2018-10-02 12:05:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:33,615 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 368 transitions. [2018-10-02 12:05:33,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-02 12:05:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 368 transitions. [2018-10-02 12:05:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-02 12:05:33,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:33,616 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 1, 1, 1] [2018-10-02 12:05:33,616 INFO L423 AbstractCegarLoop]: === Iteration 54 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:33,616 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:33,617 INFO L82 PathProgramCache]: Analyzing trace with hash 563284832, now seen corresponding path program 52 times [2018-10-02 12:05:33,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:33,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:33,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:33,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:33,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:34,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:34,968 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:34,976 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:05:35,034 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:05:35,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:35,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:37,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:37,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-10-02 12:05:37,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-02 12:05:37,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-02 12:05:37,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:37,279 INFO L87 Difference]: Start difference. First operand 264 states and 368 transitions. Second operand 108 states. [2018-10-02 12:05:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:38,608 INFO L93 Difference]: Finished difference Result 275 states and 383 transitions. [2018-10-02 12:05:38,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-02 12:05:38,608 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 263 [2018-10-02 12:05:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:38,609 INFO L225 Difference]: With dead ends: 275 [2018-10-02 12:05:38,610 INFO L226 Difference]: Without dead ends: 273 [2018-10-02 12:05:38,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.3s impTime [2018-10-02 12:05:38,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-10-02 12:05:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2018-10-02 12:05:38,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-02 12:05:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 375 transitions. [2018-10-02 12:05:38,615 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 375 transitions. Word has length 263 [2018-10-02 12:05:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:38,615 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 375 transitions. [2018-10-02 12:05:38,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-02 12:05:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 375 transitions. [2018-10-02 12:05:38,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-02 12:05:38,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:38,616 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 1, 1, 1] [2018-10-02 12:05:38,616 INFO L423 AbstractCegarLoop]: === Iteration 55 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:38,616 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:38,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1996048593, now seen corresponding path program 53 times [2018-10-02 12:05:38,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:38,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:38,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:38,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:38,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:39,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:39,781 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:39,789 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:05:39,917 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-02 12:05:39,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:39,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:42,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:42,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 109 [2018-10-02 12:05:42,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-02 12:05:42,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-02 12:05:42,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:42,354 INFO L87 Difference]: Start difference. First operand 269 states and 375 transitions. Second operand 110 states. [2018-10-02 12:05:43,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:43,729 INFO L93 Difference]: Finished difference Result 280 states and 390 transitions. [2018-10-02 12:05:43,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:05:43,729 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 268 [2018-10-02 12:05:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:43,730 INFO L225 Difference]: With dead ends: 280 [2018-10-02 12:05:43,730 INFO L226 Difference]: Without dead ends: 278 [2018-10-02 12:05:43,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.3s impTime [2018-10-02 12:05:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-10-02 12:05:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2018-10-02 12:05:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-02 12:05:43,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 382 transitions. [2018-10-02 12:05:43,737 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 382 transitions. Word has length 268 [2018-10-02 12:05:43,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:43,738 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 382 transitions. [2018-10-02 12:05:43,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-02 12:05:43,738 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 382 transitions. [2018-10-02 12:05:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-02 12:05:43,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:43,739 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 1, 1, 1] [2018-10-02 12:05:43,740 INFO L423 AbstractCegarLoop]: === Iteration 56 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:43,740 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:43,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1774504448, now seen corresponding path program 54 times [2018-10-02 12:05:43,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:43,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:43,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:43,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:43,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:44,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:44,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:44,814 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:05:44,957 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-02 12:05:44,957 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:44,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:46,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:46,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-10-02 12:05:46,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-02 12:05:46,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-02 12:05:46,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:46,922 INFO L87 Difference]: Start difference. First operand 274 states and 382 transitions. Second operand 112 states. [2018-10-02 12:05:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:48,538 INFO L93 Difference]: Finished difference Result 285 states and 397 transitions. [2018-10-02 12:05:48,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-02 12:05:48,538 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 273 [2018-10-02 12:05:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:48,540 INFO L225 Difference]: With dead ends: 285 [2018-10-02 12:05:48,540 INFO L226 Difference]: Without dead ends: 283 [2018-10-02 12:05:48,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.7s impTime [2018-10-02 12:05:48,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-02 12:05:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-10-02 12:05:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-02 12:05:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 389 transitions. [2018-10-02 12:05:48,549 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 389 transitions. Word has length 273 [2018-10-02 12:05:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:48,549 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 389 transitions. [2018-10-02 12:05:48,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-02 12:05:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 389 transitions. [2018-10-02 12:05:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-02 12:05:48,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:48,551 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 1, 1, 1] [2018-10-02 12:05:48,551 INFO L423 AbstractCegarLoop]: === Iteration 57 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:48,551 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:48,551 INFO L82 PathProgramCache]: Analyzing trace with hash -281694671, now seen corresponding path program 55 times [2018-10-02 12:05:48,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:48,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:48,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:48,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:48,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:50,002 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:50,002 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:50,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:50,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:52,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:52,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 113 [2018-10-02 12:05:52,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-02 12:05:52,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-02 12:05:52,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:52,672 INFO L87 Difference]: Start difference. First operand 279 states and 389 transitions. Second operand 114 states. [2018-10-02 12:05:53,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:53,936 INFO L93 Difference]: Finished difference Result 290 states and 404 transitions. [2018-10-02 12:05:53,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-02 12:05:53,937 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 278 [2018-10-02 12:05:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:53,938 INFO L225 Difference]: With dead ends: 290 [2018-10-02 12:05:53,938 INFO L226 Difference]: Without dead ends: 288 [2018-10-02 12:05:53,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.6s impTime [2018-10-02 12:05:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-10-02 12:05:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2018-10-02 12:05:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-02 12:05:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 396 transitions. [2018-10-02 12:05:53,944 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 396 transitions. Word has length 278 [2018-10-02 12:05:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:53,944 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 396 transitions. [2018-10-02 12:05:53,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-02 12:05:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 396 transitions. [2018-10-02 12:05:53,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-02 12:05:53,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:53,945 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 1, 1, 1] [2018-10-02 12:05:53,945 INFO L423 AbstractCegarLoop]: === Iteration 58 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:53,945 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:53,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1269776224, now seen corresponding path program 56 times [2018-10-02 12:05:53,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:53,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:53,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:53,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:05:53,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:05:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:55,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:05:55,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:05:55,587 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:05:55,651 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:05:55,651 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:05:55,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:05:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:05:58,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:05:58,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-10-02 12:05:58,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-02 12:05:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-02 12:05:58,229 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:05:58,229 INFO L87 Difference]: Start difference. First operand 284 states and 396 transitions. Second operand 116 states. [2018-10-02 12:05:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:05:59,769 INFO L93 Difference]: Finished difference Result 295 states and 411 transitions. [2018-10-02 12:05:59,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:05:59,770 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 283 [2018-10-02 12:05:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:05:59,771 INFO L225 Difference]: With dead ends: 295 [2018-10-02 12:05:59,771 INFO L226 Difference]: Without dead ends: 293 [2018-10-02 12:05:59,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 2.8s impTime [2018-10-02 12:05:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-10-02 12:05:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2018-10-02 12:05:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-10-02 12:05:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2018-10-02 12:05:59,776 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 283 [2018-10-02 12:05:59,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:05:59,777 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2018-10-02 12:05:59,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-02 12:05:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2018-10-02 12:05:59,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-02 12:05:59,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:05:59,778 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 1, 1, 1] [2018-10-02 12:05:59,778 INFO L423 AbstractCegarLoop]: === Iteration 59 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:05:59,778 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:05:59,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1555749777, now seen corresponding path program 57 times [2018-10-02 12:05:59,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:05:59,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:05:59,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:59,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:05:59,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:05:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:02,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:02,059 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:02,066 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:06:02,198 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-02 12:06:02,199 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:02,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:04,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:04,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 117 [2018-10-02 12:06:04,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-02 12:06:04,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-02 12:06:04,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:04,891 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand 118 states. [2018-10-02 12:06:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:06,362 INFO L93 Difference]: Finished difference Result 300 states and 418 transitions. [2018-10-02 12:06:06,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-02 12:06:06,362 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 288 [2018-10-02 12:06:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:06,363 INFO L225 Difference]: With dead ends: 300 [2018-10-02 12:06:06,363 INFO L226 Difference]: Without dead ends: 298 [2018-10-02 12:06:06,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time 3.5s impTime [2018-10-02 12:06:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-02 12:06:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2018-10-02 12:06:06,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-02 12:06:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 410 transitions. [2018-10-02 12:06:06,371 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 410 transitions. Word has length 288 [2018-10-02 12:06:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:06,372 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 410 transitions. [2018-10-02 12:06:06,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-02 12:06:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 410 transitions. [2018-10-02 12:06:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-02 12:06:06,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:06,373 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 1, 1, 1] [2018-10-02 12:06:06,373 INFO L423 AbstractCegarLoop]: === Iteration 60 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:06,374 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:06,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1607528256, now seen corresponding path program 58 times [2018-10-02 12:06:06,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:06,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:06,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:06,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:06,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:08,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:08,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:08,486 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:06:08,556 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:06:08,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:08,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:11,372 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:11,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-10-02 12:06:11,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-02 12:06:11,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-02 12:06:11,373 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:11,373 INFO L87 Difference]: Start difference. First operand 294 states and 410 transitions. Second operand 120 states. [2018-10-02 12:06:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:12,675 INFO L93 Difference]: Finished difference Result 305 states and 425 transitions. [2018-10-02 12:06:12,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-02 12:06:12,675 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 293 [2018-10-02 12:06:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:12,676 INFO L225 Difference]: With dead ends: 305 [2018-10-02 12:06:12,676 INFO L226 Difference]: Without dead ends: 303 [2018-10-02 12:06:12,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.4s impTime [2018-10-02 12:06:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-02 12:06:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-10-02 12:06:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-02 12:06:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 417 transitions. [2018-10-02 12:06:12,685 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 417 transitions. Word has length 293 [2018-10-02 12:06:12,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:12,686 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 417 transitions. [2018-10-02 12:06:12,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-02 12:06:12,686 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 417 transitions. [2018-10-02 12:06:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-02 12:06:12,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:12,688 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 1, 1, 1] [2018-10-02 12:06:12,688 INFO L423 AbstractCegarLoop]: === Iteration 61 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:12,688 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:12,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1898893553, now seen corresponding path program 59 times [2018-10-02 12:06:12,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:12,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:12,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:12,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:12,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:13,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:13,871 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:13,880 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:06:14,023 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-02 12:06:14,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:14,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:16,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:16,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 121 [2018-10-02 12:06:16,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-02 12:06:16,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-02 12:06:16,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:16,315 INFO L87 Difference]: Start difference. First operand 299 states and 417 transitions. Second operand 122 states. [2018-10-02 12:06:17,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:17,805 INFO L93 Difference]: Finished difference Result 310 states and 432 transitions. [2018-10-02 12:06:17,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:06:17,805 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 298 [2018-10-02 12:06:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:17,806 INFO L225 Difference]: With dead ends: 310 [2018-10-02 12:06:17,806 INFO L226 Difference]: Without dead ends: 308 [2018-10-02 12:06:17,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.0s impTime [2018-10-02 12:06:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-10-02 12:06:17,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2018-10-02 12:06:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-10-02 12:06:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 424 transitions. [2018-10-02 12:06:17,812 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 424 transitions. Word has length 298 [2018-10-02 12:06:17,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:17,812 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 424 transitions. [2018-10-02 12:06:17,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-02 12:06:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 424 transitions. [2018-10-02 12:06:17,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-02 12:06:17,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:17,814 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 1, 1, 1] [2018-10-02 12:06:17,814 INFO L423 AbstractCegarLoop]: === Iteration 62 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:17,814 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:17,814 INFO L82 PathProgramCache]: Analyzing trace with hash -765504032, now seen corresponding path program 60 times [2018-10-02 12:06:17,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:17,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:17,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:17,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:17,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:19,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:19,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:19,016 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:06:19,166 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-02 12:06:19,166 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:19,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:21,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:21,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-10-02 12:06:21,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-02 12:06:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-02 12:06:21,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:21,592 INFO L87 Difference]: Start difference. First operand 304 states and 424 transitions. Second operand 124 states. [2018-10-02 12:06:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:23,110 INFO L93 Difference]: Finished difference Result 315 states and 439 transitions. [2018-10-02 12:06:23,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-02 12:06:23,110 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 303 [2018-10-02 12:06:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:23,112 INFO L225 Difference]: With dead ends: 315 [2018-10-02 12:06:23,112 INFO L226 Difference]: Without dead ends: 313 [2018-10-02 12:06:23,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.1s impTime [2018-10-02 12:06:23,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-10-02 12:06:23,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2018-10-02 12:06:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-10-02 12:06:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 431 transitions. [2018-10-02 12:06:23,118 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 431 transitions. Word has length 303 [2018-10-02 12:06:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:23,118 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 431 transitions. [2018-10-02 12:06:23,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-02 12:06:23,119 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 431 transitions. [2018-10-02 12:06:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-02 12:06:23,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:23,120 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 61, 1, 1, 1] [2018-10-02 12:06:23,120 INFO L423 AbstractCegarLoop]: === Iteration 63 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:23,120 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:23,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2034790831, now seen corresponding path program 61 times [2018-10-02 12:06:23,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:23,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:23,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:23,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:23,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:25,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:25,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:25,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:06:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:25,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:28,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:28,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 125 [2018-10-02 12:06:28,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-02 12:06:28,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-02 12:06:28,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:28,123 INFO L87 Difference]: Start difference. First operand 309 states and 431 transitions. Second operand 126 states. [2018-10-02 12:06:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:29,509 INFO L93 Difference]: Finished difference Result 320 states and 446 transitions. [2018-10-02 12:06:29,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-02 12:06:29,509 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 308 [2018-10-02 12:06:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:29,511 INFO L225 Difference]: With dead ends: 320 [2018-10-02 12:06:29,511 INFO L226 Difference]: Without dead ends: 318 [2018-10-02 12:06:29,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.3s impTime [2018-10-02 12:06:29,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-10-02 12:06:29,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 314. [2018-10-02 12:06:29,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-10-02 12:06:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 438 transitions. [2018-10-02 12:06:29,517 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 438 transitions. Word has length 308 [2018-10-02 12:06:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:29,517 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 438 transitions. [2018-10-02 12:06:29,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-02 12:06:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 438 transitions. [2018-10-02 12:06:29,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-02 12:06:29,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:29,519 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 62, 1, 1, 1] [2018-10-02 12:06:29,519 INFO L423 AbstractCegarLoop]: === Iteration 64 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:29,519 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:29,519 INFO L82 PathProgramCache]: Analyzing trace with hash 429257856, now seen corresponding path program 62 times [2018-10-02 12:06:29,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:29,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:29,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:29,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:06:29,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:30,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:30,830 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:30,838 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:06:30,910 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:06:30,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:30,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:33,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:33,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-10-02 12:06:33,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-02 12:06:33,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-02 12:06:33,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:33,435 INFO L87 Difference]: Start difference. First operand 314 states and 438 transitions. Second operand 128 states. [2018-10-02 12:06:35,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:35,019 INFO L93 Difference]: Finished difference Result 325 states and 453 transitions. [2018-10-02 12:06:35,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:06:35,019 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 313 [2018-10-02 12:06:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:35,020 INFO L225 Difference]: With dead ends: 325 [2018-10-02 12:06:35,020 INFO L226 Difference]: Without dead ends: 323 [2018-10-02 12:06:35,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.2s impTime [2018-10-02 12:06:35,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-02 12:06:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-10-02 12:06:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-02 12:06:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 445 transitions. [2018-10-02 12:06:35,027 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 445 transitions. Word has length 313 [2018-10-02 12:06:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:35,028 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 445 transitions. [2018-10-02 12:06:35,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-02 12:06:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 445 transitions. [2018-10-02 12:06:35,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-02 12:06:35,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:35,030 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1] [2018-10-02 12:06:35,030 INFO L423 AbstractCegarLoop]: === Iteration 65 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:35,030 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:35,030 INFO L82 PathProgramCache]: Analyzing trace with hash -322639, now seen corresponding path program 63 times [2018-10-02 12:06:35,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:35,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:35,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:35,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:35,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:36,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:36,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:36,168 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:06:36,333 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-02 12:06:36,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:36,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:38,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:38,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2018-10-02 12:06:38,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-02 12:06:38,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-02 12:06:38,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:38,910 INFO L87 Difference]: Start difference. First operand 319 states and 445 transitions. Second operand 130 states. [2018-10-02 12:06:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:40,750 INFO L93 Difference]: Finished difference Result 330 states and 460 transitions. [2018-10-02 12:06:40,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-02 12:06:40,750 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 318 [2018-10-02 12:06:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:40,751 INFO L225 Difference]: With dead ends: 330 [2018-10-02 12:06:40,752 INFO L226 Difference]: Without dead ends: 328 [2018-10-02 12:06:40,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.1s impTime [2018-10-02 12:06:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-10-02 12:06:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2018-10-02 12:06:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-10-02 12:06:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 452 transitions. [2018-10-02 12:06:40,760 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 452 transitions. Word has length 318 [2018-10-02 12:06:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:40,760 INFO L480 AbstractCegarLoop]: Abstraction has 324 states and 452 transitions. [2018-10-02 12:06:40,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-02 12:06:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 452 transitions. [2018-10-02 12:06:40,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-02 12:06:40,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:40,762 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 64, 1, 1, 1] [2018-10-02 12:06:40,762 INFO L423 AbstractCegarLoop]: === Iteration 66 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:40,763 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:40,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1970353376, now seen corresponding path program 64 times [2018-10-02 12:06:40,763 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:40,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:40,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:40,764 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:40,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:42,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:42,163 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:42,171 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:06:42,250 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:06:42,250 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:42,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:44,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:44,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-10-02 12:06:44,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-02 12:06:44,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-02 12:06:44,792 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:44,792 INFO L87 Difference]: Start difference. First operand 324 states and 452 transitions. Second operand 132 states. [2018-10-02 12:06:46,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:46,623 INFO L93 Difference]: Finished difference Result 335 states and 467 transitions. [2018-10-02 12:06:46,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-02 12:06:46,623 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 323 [2018-10-02 12:06:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:46,624 INFO L225 Difference]: With dead ends: 335 [2018-10-02 12:06:46,624 INFO L226 Difference]: Without dead ends: 333 [2018-10-02 12:06:46,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.3s impTime [2018-10-02 12:06:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-02 12:06:46,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2018-10-02 12:06:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-10-02 12:06:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 459 transitions. [2018-10-02 12:06:46,631 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 459 transitions. Word has length 323 [2018-10-02 12:06:46,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:46,631 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 459 transitions. [2018-10-02 12:06:46,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-02 12:06:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 459 transitions. [2018-10-02 12:06:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-02 12:06:46,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:46,632 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 65, 1, 1, 1] [2018-10-02 12:06:46,633 INFO L423 AbstractCegarLoop]: === Iteration 67 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:46,633 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:46,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1474338543, now seen corresponding path program 65 times [2018-10-02 12:06:46,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:46,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:46,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:46,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:46,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:47,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:47,566 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:47,573 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:06:47,731 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-02 12:06:47,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:47,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:50,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:50,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 133 [2018-10-02 12:06:50,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-02 12:06:50,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-02 12:06:50,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:50,092 INFO L87 Difference]: Start difference. First operand 329 states and 459 transitions. Second operand 134 states. [2018-10-02 12:06:51,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:51,962 INFO L93 Difference]: Finished difference Result 340 states and 474 transitions. [2018-10-02 12:06:51,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:06:51,963 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 328 [2018-10-02 12:06:51,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:51,964 INFO L225 Difference]: With dead ends: 340 [2018-10-02 12:06:51,964 INFO L226 Difference]: Without dead ends: 338 [2018-10-02 12:06:51,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.6s impTime [2018-10-02 12:06:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-02 12:06:51,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2018-10-02 12:06:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-10-02 12:06:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 466 transitions. [2018-10-02 12:06:51,971 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 466 transitions. Word has length 328 [2018-10-02 12:06:51,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:51,971 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 466 transitions. [2018-10-02 12:06:51,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-02 12:06:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 466 transitions. [2018-10-02 12:06:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-02 12:06:51,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:51,972 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 66, 1, 1, 1] [2018-10-02 12:06:51,973 INFO L423 AbstractCegarLoop]: === Iteration 68 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:51,973 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1642322368, now seen corresponding path program 66 times [2018-10-02 12:06:51,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:51,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:51,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:51,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:51,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:53,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:53,388 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:53,395 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:06:53,551 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-02 12:06:53,551 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:06:53,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:06:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:56,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:06:56,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-10-02 12:06:56,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-02 12:06:56,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-02 12:06:56,328 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:06:56,328 INFO L87 Difference]: Start difference. First operand 334 states and 466 transitions. Second operand 136 states. [2018-10-02 12:06:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:06:58,400 INFO L93 Difference]: Finished difference Result 345 states and 481 transitions. [2018-10-02 12:06:58,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-02 12:06:58,400 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 333 [2018-10-02 12:06:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:06:58,402 INFO L225 Difference]: With dead ends: 345 [2018-10-02 12:06:58,402 INFO L226 Difference]: Without dead ends: 343 [2018-10-02 12:06:58,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.4s impTime [2018-10-02 12:06:58,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-02 12:06:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-10-02 12:06:58,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-02 12:06:58,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 473 transitions. [2018-10-02 12:06:58,408 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 473 transitions. Word has length 333 [2018-10-02 12:06:58,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:06:58,409 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 473 transitions. [2018-10-02 12:06:58,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-02 12:06:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 473 transitions. [2018-10-02 12:06:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-02 12:06:58,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:06:58,410 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 67, 1, 1, 1] [2018-10-02 12:06:58,410 INFO L423 AbstractCegarLoop]: === Iteration 69 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:06:58,410 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:06:58,410 INFO L82 PathProgramCache]: Analyzing trace with hash 315258481, now seen corresponding path program 67 times [2018-10-02 12:06:58,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:06:58,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:06:58,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:58,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:06:58,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:06:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:06:59,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:06:59,888 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:06:59,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:06:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:06:59,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:02,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:02,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 137 [2018-10-02 12:07:02,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-02 12:07:02,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-02 12:07:02,998 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:02,999 INFO L87 Difference]: Start difference. First operand 339 states and 473 transitions. Second operand 138 states. [2018-10-02 12:07:05,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:05,020 INFO L93 Difference]: Finished difference Result 350 states and 488 transitions. [2018-10-02 12:07:05,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-02 12:07:05,021 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 338 [2018-10-02 12:07:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:05,022 INFO L225 Difference]: With dead ends: 350 [2018-10-02 12:07:05,022 INFO L226 Difference]: Without dead ends: 348 [2018-10-02 12:07:05,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 2.7s impTime [2018-10-02 12:07:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-10-02 12:07:05,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2018-10-02 12:07:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-10-02 12:07:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 480 transitions. [2018-10-02 12:07:05,029 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 480 transitions. Word has length 338 [2018-10-02 12:07:05,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:05,029 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 480 transitions. [2018-10-02 12:07:05,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-02 12:07:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 480 transitions. [2018-10-02 12:07:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-02 12:07:05,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:05,030 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 68, 1, 1, 1] [2018-10-02 12:07:05,030 INFO L423 AbstractCegarLoop]: === Iteration 70 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:05,031 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:05,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1672421472, now seen corresponding path program 68 times [2018-10-02 12:07:05,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:05,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:05,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:05,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:05,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:06,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:06,371 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:06,378 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:06,455 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:06,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:06,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:09,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:09,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-10-02 12:07:09,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-02 12:07:09,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-02 12:07:09,458 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:09,458 INFO L87 Difference]: Start difference. First operand 344 states and 480 transitions. Second operand 140 states. [2018-10-02 12:07:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:11,492 INFO L93 Difference]: Finished difference Result 355 states and 495 transitions. [2018-10-02 12:07:11,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:07:11,493 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 343 [2018-10-02 12:07:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:11,494 INFO L225 Difference]: With dead ends: 355 [2018-10-02 12:07:11,494 INFO L226 Difference]: Without dead ends: 353 [2018-10-02 12:07:11,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.5s impTime [2018-10-02 12:07:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-10-02 12:07:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2018-10-02 12:07:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-10-02 12:07:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 487 transitions. [2018-10-02 12:07:11,501 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 487 transitions. Word has length 343 [2018-10-02 12:07:11,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:11,502 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 487 transitions. [2018-10-02 12:07:11,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-02 12:07:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 487 transitions. [2018-10-02 12:07:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-02 12:07:11,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:11,503 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 69, 1, 1, 1] [2018-10-02 12:07:11,503 INFO L423 AbstractCegarLoop]: === Iteration 71 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:11,504 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash -64859183, now seen corresponding path program 69 times [2018-10-02 12:07:11,504 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:11,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:11,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:11,505 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:11,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 0 proven. 11799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:12,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:12,933 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:12,940 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:13,132 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-02 12:07:13,132 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:13,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-02 12:07:14,419 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-02 12:07:14,620 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:07:14,621 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:07:14,627 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:07:14,627 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:07:14 BoogieIcfgContainer [2018-10-02 12:07:14,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:07:14,628 INFO L168 Benchmark]: Toolchain (without parser) took 239260.50 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 185.6 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 92.0 MB). Peak memory consumption was 277.6 MB. Max. memory is 7.1 GB. [2018-10-02 12:07:14,630 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. [2018-10-02 12:07:14,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.35 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:07:14,631 INFO L168 Benchmark]: Boogie Preprocessor took 22.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:07:14,631 INFO L168 Benchmark]: RCFGBuilder took 366.77 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. [2018-10-02 12:07:14,632 INFO L168 Benchmark]: TraceAbstraction took 238823.94 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 185.6 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 70.9 MB). Peak memory consumption was 256.5 MB. Max. memory is 7.1 GB. [2018-10-02 12:07:14,635 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 41.35 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 22.43 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 366.77 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 238823.94 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 185.6 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 70.9 MB). Peak memory consumption was 256.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 39). Cancelled while BasicCegarLoop was analyzing trace of length 349 with TraceHistMax 69, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 238.7s OverallTime, 71 OverallIterations, 69 TraceHistogramMax, 59.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 573 SDtfs, 28523 SDslu, 20607 SDs, 0 SdLazy, 9645 SolverSat, 256 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14352 GetRequests, 9522 SyntacticMatches, 0 SemanticMatches, 4830 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=70, 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: 0.4s AutomataMinimizationTime, 70 MinimizatonAttempts, 276 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 164.8s InterpolantComputationTime, 23878 NumberOfCodeBlocks, 23878 NumberOfCodeBlocksAsserted, 1305 NumberOfCheckSat, 23740 ConstructedInterpolants, 11798 QuantifiedInterpolants, 51583624 SizeOfPredicates, 2550 NumberOfNonLiveVariables, 22202 ConjunctsInSsa, 4964 ConjunctsInUnsatCore, 138 InterpolantComputations, 2 PerfectInterpolantSequences, 1/528633 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/RailwayCrossing.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-07-14-651.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/RailwayCrossing.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-07-14-651.csv Completed graceful shutdown