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-d19836b [2018-09-26 21:40:11,958 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:40:11,960 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:40:11,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-09-26 21:40:12,021 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-26 21:40:12,049 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:40:12,050 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:40:12,051 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:40:12,051 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:40:12,051 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:40:12,052 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:40:12,052 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:40:12,052 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:40:12,052 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:40:12,052 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:40:12,053 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:40:12,053 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:40:12,053 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:40:12,053 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:40:12,053 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:40:12,054 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:40:12,054 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:40:12,054 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:40:12,054 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:40:12,054 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:40:12,055 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:40:12,055 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:40:12,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:40:12,055 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:40:12,055 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:40:12,056 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:40:12,056 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:40:12,056 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:40:12,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:40:12,057 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:40:12,057 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-26 21:40:12,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:40:12,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:40:12,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:40:12,137 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:40:12,137 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:40:12,138 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl [2018-09-26 21:40:12,138 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl' [2018-09-26 21:40:12,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:40:12,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:40:12,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:40:12,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:40:12,201 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:40:12,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,243 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 21:40:12,243 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 21:40:12,243 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 21:40:12,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:40:12,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:40:12,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:40:12,247 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:40:12,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... [2018-09-26 21:40:12,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:40:12,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:40:12,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:40:12,276 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:40:12,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:40:12,365 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-26 21:40:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-26 21:40:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-26 21:40:12,633 INFO L343 CfgBuilder]: Using library mode [2018-09-26 21:40:12,633 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:40:12 BoogieIcfgContainer [2018-09-26 21:40:12,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:40:12,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:40:12,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:40:12,638 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:40:12,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:40:12" (1/2) ... [2018-09-26 21:40:12,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c5d4f4 and model type RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:40:12, skipping insertion in model container [2018-09-26 21:40:12,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:40:12" (2/2) ... [2018-09-26 21:40:12,642 INFO L112 eAbstractionObserver]: Analyzing ICFG RailwayCrossing.bpl [2018-09-26 21:40:12,652 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:40:12,664 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:40:12,714 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:40:12,715 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:40:12,715 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:40:12,715 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:40:12,715 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:40:12,716 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:40:12,716 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:40:12,716 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:40:12,716 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:40:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-26 21:40:12,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 21:40:12,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:12,740 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-26 21:40:12,741 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:12,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:12,749 INFO L82 PathProgramCache]: Analyzing trace with hash 30496, now seen corresponding path program 1 times [2018-09-26 21:40:12,752 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:12,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:12,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:12,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:12,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:12,896 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:40:12,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:40:12,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:40:12,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:40:12,917 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:12,919 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-26 21:40:13,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:13,146 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2018-09-26 21:40:13,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:40:13,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-26 21:40:13,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:13,160 INFO L225 Difference]: With dead ends: 19 [2018-09-26 21:40:13,160 INFO L226 Difference]: Without dead ends: 13 [2018-09-26 21:40:13,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-26 21:40:13,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-26 21:40:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-26 21:40:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2018-09-26 21:40:13,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 12 transitions. Word has length 3 [2018-09-26 21:40:13,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:13,201 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-09-26 21:40:13,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:40:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2018-09-26 21:40:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 21:40:13,201 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:13,201 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:40:13,202 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:13,202 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:13,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1863215691, now seen corresponding path program 1 times [2018-09-26 21:40:13,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:13,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:13,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:13,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:13,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:13,229 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:40:13,230 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:40:13,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:40:13,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:40:13,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:13,232 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand 3 states. [2018-09-26 21:40:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:13,282 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2018-09-26 21:40:13,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:40:13,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-09-26 21:40:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:13,284 INFO L225 Difference]: With dead ends: 16 [2018-09-26 21:40:13,285 INFO L226 Difference]: Without dead ends: 9 [2018-09-26 21:40:13,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-26 21:40:13,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-26 21:40:13,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-26 21:40:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-26 21:40:13,289 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2018-09-26 21:40:13,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:13,289 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-26 21:40:13,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:40:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-26 21:40:13,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 21:40:13,290 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:13,290 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:40:13,290 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:13,291 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:13,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1926837521, now seen corresponding path program 1 times [2018-09-26 21:40:13,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:13,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:13,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:13,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:13,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:13,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:13,353 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:13,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:13,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:13,655 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:13,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-09-26 21:40:13,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 21:40:13,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 21:40:13,656 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:13,656 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 6 states. [2018-09-26 21:40:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:14,046 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2018-09-26 21:40:14,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 21:40:14,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-09-26 21:40:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:14,048 INFO L225 Difference]: With dead ends: 20 [2018-09-26 21:40:14,048 INFO L226 Difference]: Without dead ends: 18 [2018-09-26 21:40:14,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-26 21:40:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2018-09-26 21:40:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-26 21:40:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-09-26 21:40:14,054 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-09-26 21:40:14,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:14,054 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-09-26 21:40:14,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 21:40:14,055 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-09-26 21:40:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-26 21:40:14,055 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:14,056 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-09-26 21:40:14,059 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:14,059 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:14,059 INFO L82 PathProgramCache]: Analyzing trace with hash 640583104, now seen corresponding path program 2 times [2018-09-26 21:40:14,060 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:14,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:14,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:14,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:14,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:14,137 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:14,137 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:14,152 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:40:14,169 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:40:14,169 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:14,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:14,378 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:14,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-09-26 21:40:14,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-26 21:40:14,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-26 21:40:14,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:14,380 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 8 states. [2018-09-26 21:40:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:14,655 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2018-09-26 21:40:14,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:40:14,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-09-26 21:40:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:14,657 INFO L225 Difference]: With dead ends: 25 [2018-09-26 21:40:14,657 INFO L226 Difference]: Without dead ends: 23 [2018-09-26 21:40:14,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:14,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-26 21:40:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-09-26 21:40:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-26 21:40:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2018-09-26 21:40:14,663 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2018-09-26 21:40:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:14,663 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-09-26 21:40:14,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-26 21:40:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2018-09-26 21:40:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-26 21:40:14,664 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:14,664 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-09-26 21:40:14,664 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:14,665 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:14,665 INFO L82 PathProgramCache]: Analyzing trace with hash -297055631, now seen corresponding path program 3 times [2018-09-26 21:40:14,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:14,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:14,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:14,666 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:14,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:14,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:14,816 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:14,831 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:40:14,867 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-26 21:40:14,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:14,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:15,192 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:15,192 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-09-26 21:40:15,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-26 21:40:15,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-26 21:40:15,193 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:15,193 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 10 states. [2018-09-26 21:40:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:15,797 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2018-09-26 21:40:15,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 21:40:15,798 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-09-26 21:40:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:15,799 INFO L225 Difference]: With dead ends: 30 [2018-09-26 21:40:15,799 INFO L226 Difference]: Without dead ends: 28 [2018-09-26 21:40:15,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-26 21:40:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-09-26 21:40:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-26 21:40:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2018-09-26 21:40:15,805 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 18 [2018-09-26 21:40:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:15,805 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2018-09-26 21:40:15,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-26 21:40:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2018-09-26 21:40:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-26 21:40:15,807 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:15,807 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-09-26 21:40:15,807 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:15,807 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:15,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2073218144, now seen corresponding path program 4 times [2018-09-26 21:40:15,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:15,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:15,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:15,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:15,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:15,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:15,932 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:15,941 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:40:15,952 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:40:15,953 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:15,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:16,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:16,652 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-09-26 21:40:16,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-26 21:40:16,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-26 21:40:16,653 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:16,653 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand 12 states. [2018-09-26 21:40:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:16,827 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2018-09-26 21:40:16,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 21:40:16,828 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2018-09-26 21:40:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:16,829 INFO L225 Difference]: With dead ends: 35 [2018-09-26 21:40:16,829 INFO L226 Difference]: Without dead ends: 33 [2018-09-26 21:40:16,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-26 21:40:16,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-09-26 21:40:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-26 21:40:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2018-09-26 21:40:16,835 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 23 [2018-09-26 21:40:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:16,835 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2018-09-26 21:40:16,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-26 21:40:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2018-09-26 21:40:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-26 21:40:16,836 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:16,837 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-09-26 21:40:16,837 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:16,837 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -609605679, now seen corresponding path program 5 times [2018-09-26 21:40:16,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:16,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:16,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:16,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:16,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:16,954 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:16,955 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:16,969 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:40:16,993 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-26 21:40:16,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:16,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:17,691 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:17,691 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-26 21:40:17,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-26 21:40:17,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-26 21:40:17,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:17,692 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand 14 states. [2018-09-26 21:40:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:18,074 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2018-09-26 21:40:18,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-26 21:40:18,076 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2018-09-26 21:40:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:18,076 INFO L225 Difference]: With dead ends: 40 [2018-09-26 21:40:18,077 INFO L226 Difference]: Without dead ends: 38 [2018-09-26 21:40:18,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-26 21:40:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-09-26 21:40:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-26 21:40:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2018-09-26 21:40:18,083 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 28 [2018-09-26 21:40:18,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:18,083 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2018-09-26 21:40:18,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-26 21:40:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2018-09-26 21:40:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-26 21:40:18,085 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:18,085 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-09-26 21:40:18,085 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:18,085 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:18,085 INFO L82 PathProgramCache]: Analyzing trace with hash -70825216, now seen corresponding path program 6 times [2018-09-26 21:40:18,085 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:18,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:18,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:18,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:18,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:18,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:18,259 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:18,267 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:40:18,304 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-26 21:40:18,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:18,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:18,743 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:18,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-09-26 21:40:18,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-26 21:40:18,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-26 21:40:18,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:18,744 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand 16 states. [2018-09-26 21:40:19,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:19,033 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2018-09-26 21:40:19,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-26 21:40:19,033 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2018-09-26 21:40:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:19,034 INFO L225 Difference]: With dead ends: 45 [2018-09-26 21:40:19,035 INFO L226 Difference]: Without dead ends: 43 [2018-09-26 21:40:19,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:19,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-26 21:40:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-09-26 21:40:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-26 21:40:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2018-09-26 21:40:19,041 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 33 [2018-09-26 21:40:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:19,041 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2018-09-26 21:40:19,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-26 21:40:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2018-09-26 21:40:19,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-26 21:40:19,043 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:19,043 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-09-26 21:40:19,043 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:19,043 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:19,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1872481585, now seen corresponding path program 7 times [2018-09-26 21:40:19,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:19,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:19,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:19,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:19,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:19,153 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:19,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:19,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:19,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:19,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:19,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-09-26 21:40:19,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-26 21:40:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-26 21:40:19,718 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:19,718 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 18 states. [2018-09-26 21:40:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:20,012 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2018-09-26 21:40:20,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-26 21:40:20,013 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2018-09-26 21:40:20,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:20,015 INFO L225 Difference]: With dead ends: 50 [2018-09-26 21:40:20,015 INFO L226 Difference]: Without dead ends: 48 [2018-09-26 21:40:20,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-26 21:40:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-09-26 21:40:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-26 21:40:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2018-09-26 21:40:20,021 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 38 [2018-09-26 21:40:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:20,022 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2018-09-26 21:40:20,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-26 21:40:20,022 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-09-26 21:40:20,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-26 21:40:20,023 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:20,023 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-09-26 21:40:20,023 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:20,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:20,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1776681376, now seen corresponding path program 8 times [2018-09-26 21:40:20,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:20,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:20,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:20,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:20,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:20,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:20,166 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:20,176 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:40:20,192 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:40:20,193 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:20,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:22,000 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:22,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-26 21:40:22,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-26 21:40:22,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-26 21:40:22,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:22,001 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 20 states. [2018-09-26 21:40:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:22,193 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2018-09-26 21:40:22,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-26 21:40:22,194 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2018-09-26 21:40:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:22,195 INFO L225 Difference]: With dead ends: 55 [2018-09-26 21:40:22,195 INFO L226 Difference]: Without dead ends: 53 [2018-09-26 21:40:22,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-26 21:40:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-09-26 21:40:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-26 21:40:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2018-09-26 21:40:22,202 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 43 [2018-09-26 21:40:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:22,203 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2018-09-26 21:40:22,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-26 21:40:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2018-09-26 21:40:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-26 21:40:22,204 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:22,204 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-09-26 21:40:22,204 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:22,204 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash -951698799, now seen corresponding path program 9 times [2018-09-26 21:40:22,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:22,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:22,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:22,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:22,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:22,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:22,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:22,351 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:40:22,394 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-26 21:40:22,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:22,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:23,857 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:23,857 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-09-26 21:40:23,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-26 21:40:23,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-26 21:40:23,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:23,858 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand 22 states. [2018-09-26 21:40:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:24,126 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2018-09-26 21:40:24,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-26 21:40:24,127 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 48 [2018-09-26 21:40:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:24,128 INFO L225 Difference]: With dead ends: 60 [2018-09-26 21:40:24,128 INFO L226 Difference]: Without dead ends: 58 [2018-09-26 21:40:24,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-26 21:40:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-09-26 21:40:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-26 21:40:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2018-09-26 21:40:24,134 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 48 [2018-09-26 21:40:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:24,135 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2018-09-26 21:40:24,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-26 21:40:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2018-09-26 21:40:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-26 21:40:24,136 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:24,136 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-09-26 21:40:24,137 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:24,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash -259461056, now seen corresponding path program 10 times [2018-09-26 21:40:24,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:24,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:24,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:24,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:24,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:24,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:24,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:24,326 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:40:24,341 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:40:24,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:24,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:24,827 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:24,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-09-26 21:40:24,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-26 21:40:24,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-26 21:40:24,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:24,828 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 24 states. [2018-09-26 21:40:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:25,165 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2018-09-26 21:40:25,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-26 21:40:25,165 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2018-09-26 21:40:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:25,166 INFO L225 Difference]: With dead ends: 65 [2018-09-26 21:40:25,166 INFO L226 Difference]: Without dead ends: 63 [2018-09-26 21:40:25,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:25,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-26 21:40:25,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-09-26 21:40:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-26 21:40:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2018-09-26 21:40:25,173 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 53 [2018-09-26 21:40:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:25,174 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2018-09-26 21:40:25,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-26 21:40:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2018-09-26 21:40:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-26 21:40:25,175 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:25,175 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-09-26 21:40:25,176 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:25,176 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:25,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1213165553, now seen corresponding path program 11 times [2018-09-26 21:40:25,176 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:25,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:25,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:25,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:25,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:25,358 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:25,358 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:25,366 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:40:25,405 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-26 21:40:25,406 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:25,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:26,904 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:26,904 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2018-09-26 21:40:26,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-26 21:40:26,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-26 21:40:26,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:26,906 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand 26 states. [2018-09-26 21:40:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:27,151 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2018-09-26 21:40:27,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-26 21:40:27,152 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 58 [2018-09-26 21:40:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:27,152 INFO L225 Difference]: With dead ends: 70 [2018-09-26 21:40:27,153 INFO L226 Difference]: Without dead ends: 68 [2018-09-26 21:40:27,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-26 21:40:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-26 21:40:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-26 21:40:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2018-09-26 21:40:27,158 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 58 [2018-09-26 21:40:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:27,159 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2018-09-26 21:40:27,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-26 21:40:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2018-09-26 21:40:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-26 21:40:27,160 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:27,160 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-09-26 21:40:27,161 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:27,161 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:27,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1043720480, now seen corresponding path program 12 times [2018-09-26 21:40:27,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:27,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:27,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:27,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:27,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:27,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:27,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:27,511 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:40:27,580 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-26 21:40:27,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:27,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:28,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:28,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-09-26 21:40:28,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-26 21:40:28,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-26 21:40:28,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:28,088 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand 28 states. [2018-09-26 21:40:28,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:28,387 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-09-26 21:40:28,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-26 21:40:28,387 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 63 [2018-09-26 21:40:28,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:28,388 INFO L225 Difference]: With dead ends: 75 [2018-09-26 21:40:28,388 INFO L226 Difference]: Without dead ends: 73 [2018-09-26 21:40:28,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-26 21:40:28,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-09-26 21:40:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-26 21:40:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2018-09-26 21:40:28,395 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 63 [2018-09-26 21:40:28,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:28,395 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2018-09-26 21:40:28,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-26 21:40:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2018-09-26 21:40:28,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-26 21:40:28,397 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:28,397 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-09-26 21:40:28,397 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:28,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:28,397 INFO L82 PathProgramCache]: Analyzing trace with hash 14511441, now seen corresponding path program 13 times [2018-09-26 21:40:28,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:28,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:28,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:28,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:28,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:28,800 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:28,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:28,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:28,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:29,343 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:29,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2018-09-26 21:40:29,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-26 21:40:29,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-26 21:40:29,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:29,344 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand 30 states. [2018-09-26 21:40:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:29,679 INFO L93 Difference]: Finished difference Result 80 states and 110 transitions. [2018-09-26 21:40:29,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-26 21:40:29,680 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 68 [2018-09-26 21:40:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:29,680 INFO L225 Difference]: With dead ends: 80 [2018-09-26 21:40:29,681 INFO L226 Difference]: Without dead ends: 78 [2018-09-26 21:40:29,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:29,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-26 21:40:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-09-26 21:40:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-26 21:40:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2018-09-26 21:40:29,686 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 68 [2018-09-26 21:40:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:29,687 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2018-09-26 21:40:29,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-26 21:40:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2018-09-26 21:40:29,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-26 21:40:29,688 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:29,688 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-09-26 21:40:29,689 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:29,689 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:29,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1220315776, now seen corresponding path program 14 times [2018-09-26 21:40:29,689 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:29,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:29,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:29,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:29,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:29,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:29,925 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:29,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:40:29,976 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:40:29,976 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:29,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:30,599 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:30,599 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-09-26 21:40:30,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-26 21:40:30,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-26 21:40:30,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:30,600 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand 32 states. [2018-09-26 21:40:30,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:30,933 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2018-09-26 21:40:30,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-26 21:40:30,933 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 73 [2018-09-26 21:40:30,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:30,934 INFO L225 Difference]: With dead ends: 85 [2018-09-26 21:40:30,934 INFO L226 Difference]: Without dead ends: 83 [2018-09-26 21:40:30,935 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:30,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-26 21:40:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-09-26 21:40:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-26 21:40:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 109 transitions. [2018-09-26 21:40:30,940 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 109 transitions. Word has length 73 [2018-09-26 21:40:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:30,943 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 109 transitions. [2018-09-26 21:40:30,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-26 21:40:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 109 transitions. [2018-09-26 21:40:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-26 21:40:30,944 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:30,944 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-09-26 21:40:30,944 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:30,944 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:30,944 INFO L82 PathProgramCache]: Analyzing trace with hash 127283889, now seen corresponding path program 15 times [2018-09-26 21:40:30,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:30,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:30,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:30,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:30,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:31,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:31,912 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:31,919 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:40:32,010 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-26 21:40:32,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:32,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:32,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:32,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2018-09-26 21:40:32,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-26 21:40:32,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-26 21:40:32,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:32,550 INFO L87 Difference]: Start difference. First operand 79 states and 109 transitions. Second operand 34 states. [2018-09-26 21:40:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:33,100 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2018-09-26 21:40:33,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-26 21:40:33,100 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-09-26 21:40:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:33,101 INFO L225 Difference]: With dead ends: 90 [2018-09-26 21:40:33,101 INFO L226 Difference]: Without dead ends: 88 [2018-09-26 21:40:33,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:33,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-26 21:40:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-09-26 21:40:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-26 21:40:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2018-09-26 21:40:33,106 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 78 [2018-09-26 21:40:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:33,107 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2018-09-26 21:40:33,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-26 21:40:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2018-09-26 21:40:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-26 21:40:33,108 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:33,108 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-09-26 21:40:33,108 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:33,108 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:33,109 INFO L82 PathProgramCache]: Analyzing trace with hash -233894880, now seen corresponding path program 16 times [2018-09-26 21:40:33,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:33,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:33,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:33,110 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:33,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:33,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:33,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:33,302 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:40:33,328 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:40:33,328 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:33,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:33,984 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:33,984 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-09-26 21:40:33,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-26 21:40:33,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-26 21:40:33,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:33,985 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand 36 states. [2018-09-26 21:40:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:34,608 INFO L93 Difference]: Finished difference Result 95 states and 131 transitions. [2018-09-26 21:40:34,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-26 21:40:34,609 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 83 [2018-09-26 21:40:34,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:34,609 INFO L225 Difference]: With dead ends: 95 [2018-09-26 21:40:34,609 INFO L226 Difference]: Without dead ends: 93 [2018-09-26 21:40:34,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-26 21:40:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-09-26 21:40:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-26 21:40:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2018-09-26 21:40:34,616 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 83 [2018-09-26 21:40:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:34,617 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2018-09-26 21:40:34,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-26 21:40:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2018-09-26 21:40:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-26 21:40:34,617 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:34,618 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-09-26 21:40:34,618 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:34,618 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:34,618 INFO L82 PathProgramCache]: Analyzing trace with hash -610287599, now seen corresponding path program 17 times [2018-09-26 21:40:34,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:34,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:34,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:34,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:34,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:34,855 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:34,855 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:34,863 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:40:34,900 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-26 21:40:34,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:34,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:35,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:35,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2018-09-26 21:40:35,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-26 21:40:35,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-26 21:40:35,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:35,995 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand 38 states. [2018-09-26 21:40:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:36,403 INFO L93 Difference]: Finished difference Result 100 states and 138 transitions. [2018-09-26 21:40:36,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-26 21:40:36,404 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 88 [2018-09-26 21:40:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:36,405 INFO L225 Difference]: With dead ends: 100 [2018-09-26 21:40:36,405 INFO L226 Difference]: Without dead ends: 98 [2018-09-26 21:40:36,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-26 21:40:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-09-26 21:40:36,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-26 21:40:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 130 transitions. [2018-09-26 21:40:36,408 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 130 transitions. Word has length 88 [2018-09-26 21:40:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:36,409 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 130 transitions. [2018-09-26 21:40:36,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-26 21:40:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 130 transitions. [2018-09-26 21:40:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-26 21:40:36,410 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:36,410 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-09-26 21:40:36,410 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:36,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:36,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2059852480, now seen corresponding path program 18 times [2018-09-26 21:40:36,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:36,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:36,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:36,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:36,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:36,604 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:36,604 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:36,611 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:40:36,651 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-26 21:40:36,651 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:36,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:37,570 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:37,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-09-26 21:40:37,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-26 21:40:37,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-26 21:40:37,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:37,571 INFO L87 Difference]: Start difference. First operand 94 states and 130 transitions. Second operand 40 states. [2018-09-26 21:40:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:38,106 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2018-09-26 21:40:38,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-26 21:40:38,106 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 93 [2018-09-26 21:40:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:38,107 INFO L225 Difference]: With dead ends: 105 [2018-09-26 21:40:38,107 INFO L226 Difference]: Without dead ends: 103 [2018-09-26 21:40:38,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-26 21:40:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-09-26 21:40:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-26 21:40:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2018-09-26 21:40:38,111 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 93 [2018-09-26 21:40:38,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:38,111 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2018-09-26 21:40:38,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-26 21:40:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2018-09-26 21:40:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-26 21:40:38,112 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:38,112 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-09-26 21:40:38,113 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:38,113 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:38,113 INFO L82 PathProgramCache]: Analyzing trace with hash -996141711, now seen corresponding path program 19 times [2018-09-26 21:40:38,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:38,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:38,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:38,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:38,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:38,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:38,336 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:38,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:38,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:39,281 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:39,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2018-09-26 21:40:39,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-26 21:40:39,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-26 21:40:39,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:39,282 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand 42 states. [2018-09-26 21:40:39,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:39,812 INFO L93 Difference]: Finished difference Result 110 states and 152 transitions. [2018-09-26 21:40:39,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-26 21:40:39,813 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 98 [2018-09-26 21:40:39,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:39,814 INFO L225 Difference]: With dead ends: 110 [2018-09-26 21:40:39,814 INFO L226 Difference]: Without dead ends: 108 [2018-09-26 21:40:39,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:39,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-26 21:40:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-09-26 21:40:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-26 21:40:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2018-09-26 21:40:39,821 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 98 [2018-09-26 21:40:39,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:39,821 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2018-09-26 21:40:39,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-26 21:40:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2018-09-26 21:40:39,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-26 21:40:39,822 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:39,822 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-09-26 21:40:39,822 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:39,823 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:39,823 INFO L82 PathProgramCache]: Analyzing trace with hash -511385248, now seen corresponding path program 20 times [2018-09-26 21:40:39,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:39,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:39,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:39,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:39,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:40,049 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:40,049 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:40,058 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:40:40,090 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:40:40,090 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:40,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:42,484 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:42,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-09-26 21:40:42,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-26 21:40:42,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-26 21:40:42,485 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:42,485 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand 44 states. [2018-09-26 21:40:43,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:43,112 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2018-09-26 21:40:43,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-26 21:40:43,114 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 103 [2018-09-26 21:40:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:43,115 INFO L225 Difference]: With dead ends: 115 [2018-09-26 21:40:43,115 INFO L226 Difference]: Without dead ends: 113 [2018-09-26 21:40:43,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-26 21:40:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-09-26 21:40:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-26 21:40:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 151 transitions. [2018-09-26 21:40:43,121 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 151 transitions. Word has length 103 [2018-09-26 21:40:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:43,122 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 151 transitions. [2018-09-26 21:40:43,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-26 21:40:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 151 transitions. [2018-09-26 21:40:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-26 21:40:43,123 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:43,123 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-09-26 21:40:43,123 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:43,123 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash 851260113, now seen corresponding path program 21 times [2018-09-26 21:40:43,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:43,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:43,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:43,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:43,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:43,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:43,433 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:43,442 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:40:43,514 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-26 21:40:43,515 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:43,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:44,370 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:44,370 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2018-09-26 21:40:44,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-26 21:40:44,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-26 21:40:44,373 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:44,374 INFO L87 Difference]: Start difference. First operand 109 states and 151 transitions. Second operand 46 states. [2018-09-26 21:40:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:45,065 INFO L93 Difference]: Finished difference Result 120 states and 166 transitions. [2018-09-26 21:40:45,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-26 21:40:45,066 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 108 [2018-09-26 21:40:45,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:45,067 INFO L225 Difference]: With dead ends: 120 [2018-09-26 21:40:45,067 INFO L226 Difference]: Without dead ends: 118 [2018-09-26 21:40:45,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-26 21:40:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-09-26 21:40:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-26 21:40:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2018-09-26 21:40:45,071 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 158 transitions. Word has length 108 [2018-09-26 21:40:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:45,071 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 158 transitions. [2018-09-26 21:40:45,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-26 21:40:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 158 transitions. [2018-09-26 21:40:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-26 21:40:45,072 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:45,072 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-09-26 21:40:45,072 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:45,073 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:45,073 INFO L82 PathProgramCache]: Analyzing trace with hash -572317696, now seen corresponding path program 22 times [2018-09-26 21:40:45,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:45,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:45,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:45,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:45,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:45,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:45,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:45,324 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:40:45,357 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:40:45,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:45,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:46,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:46,230 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-09-26 21:40:46,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-26 21:40:46,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-26 21:40:46,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:46,231 INFO L87 Difference]: Start difference. First operand 114 states and 158 transitions. Second operand 48 states. [2018-09-26 21:40:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:46,958 INFO L93 Difference]: Finished difference Result 125 states and 173 transitions. [2018-09-26 21:40:46,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-26 21:40:46,959 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 113 [2018-09-26 21:40:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:46,959 INFO L225 Difference]: With dead ends: 125 [2018-09-26 21:40:46,959 INFO L226 Difference]: Without dead ends: 123 [2018-09-26 21:40:46,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:46,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-26 21:40:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-09-26 21:40:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-26 21:40:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2018-09-26 21:40:46,965 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 113 [2018-09-26 21:40:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:46,965 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2018-09-26 21:40:46,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-26 21:40:46,965 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2018-09-26 21:40:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-26 21:40:46,966 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:46,966 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-09-26 21:40:46,966 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:46,966 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:46,966 INFO L82 PathProgramCache]: Analyzing trace with hash 513611825, now seen corresponding path program 23 times [2018-09-26 21:40:46,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:46,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:46,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:46,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:46,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:47,383 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:47,383 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:47,390 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:40:47,440 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-26 21:40:47,440 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:47,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:48,473 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:48,473 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2018-09-26 21:40:48,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-26 21:40:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-26 21:40:48,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:48,475 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 50 states. [2018-09-26 21:40:49,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:49,159 INFO L93 Difference]: Finished difference Result 130 states and 180 transitions. [2018-09-26 21:40:49,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-26 21:40:49,160 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 118 [2018-09-26 21:40:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:49,161 INFO L225 Difference]: With dead ends: 130 [2018-09-26 21:40:49,161 INFO L226 Difference]: Without dead ends: 128 [2018-09-26 21:40:49,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-26 21:40:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-09-26 21:40:49,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-26 21:40:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2018-09-26 21:40:49,166 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 118 [2018-09-26 21:40:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:49,167 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2018-09-26 21:40:49,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-26 21:40:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2018-09-26 21:40:49,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-26 21:40:49,168 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:49,168 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-09-26 21:40:49,168 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:49,168 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:49,168 INFO L82 PathProgramCache]: Analyzing trace with hash -285501792, now seen corresponding path program 24 times [2018-09-26 21:40:49,168 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:49,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:49,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:49,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:49,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:49,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:49,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:49,606 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:40:49,667 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-26 21:40:49,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:49,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:50,683 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:50,683 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-09-26 21:40:50,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-26 21:40:50,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-26 21:40:50,684 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:50,685 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand 52 states. [2018-09-26 21:40:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:51,523 INFO L93 Difference]: Finished difference Result 135 states and 187 transitions. [2018-09-26 21:40:51,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-26 21:40:51,523 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 123 [2018-09-26 21:40:51,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:51,524 INFO L225 Difference]: With dead ends: 135 [2018-09-26 21:40:51,525 INFO L226 Difference]: Without dead ends: 133 [2018-09-26 21:40:51,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-26 21:40:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-09-26 21:40:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-26 21:40:51,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2018-09-26 21:40:51,530 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 123 [2018-09-26 21:40:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:51,530 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2018-09-26 21:40:51,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-26 21:40:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2018-09-26 21:40:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-26 21:40:51,531 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:51,532 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-09-26 21:40:51,532 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:51,532 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1768277393, now seen corresponding path program 25 times [2018-09-26 21:40:51,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:51,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:51,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:51,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:51,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:52,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:52,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:52,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:52,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:53,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:53,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2018-09-26 21:40:53,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-26 21:40:53,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-26 21:40:53,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:53,925 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand 54 states. [2018-09-26 21:40:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:54,735 INFO L93 Difference]: Finished difference Result 140 states and 194 transitions. [2018-09-26 21:40:54,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-26 21:40:54,737 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 128 [2018-09-26 21:40:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:54,738 INFO L225 Difference]: With dead ends: 140 [2018-09-26 21:40:54,738 INFO L226 Difference]: Without dead ends: 138 [2018-09-26 21:40:54,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-26 21:40:54,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-09-26 21:40:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-26 21:40:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2018-09-26 21:40:54,744 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 128 [2018-09-26 21:40:54,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:54,744 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2018-09-26 21:40:54,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-26 21:40:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2018-09-26 21:40:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-26 21:40:54,745 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:54,745 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-09-26 21:40:54,746 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:54,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:54,746 INFO L82 PathProgramCache]: Analyzing trace with hash -77052608, now seen corresponding path program 26 times [2018-09-26 21:40:54,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:54,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:54,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:54,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:40:54,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:55,057 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:55,057 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:55,065 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:40:55,103 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:40:55,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:55,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:56,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:56,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-09-26 21:40:56,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-26 21:40:56,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-26 21:40:56,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:56,538 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand 56 states. [2018-09-26 21:40:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:40:57,368 INFO L93 Difference]: Finished difference Result 145 states and 201 transitions. [2018-09-26 21:40:57,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-26 21:40:57,369 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 133 [2018-09-26 21:40:57,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:40:57,370 INFO L225 Difference]: With dead ends: 145 [2018-09-26 21:40:57,370 INFO L226 Difference]: Without dead ends: 143 [2018-09-26 21:40:57,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:40:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-26 21:40:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-09-26 21:40:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-26 21:40:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2018-09-26 21:40:57,375 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 133 [2018-09-26 21:40:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:40:57,375 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2018-09-26 21:40:57,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-26 21:40:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2018-09-26 21:40:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-26 21:40:57,376 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:40:57,376 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-09-26 21:40:57,376 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:40:57,377 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:40:57,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1019034353, now seen corresponding path program 27 times [2018-09-26 21:40:57,377 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:40:57,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:40:57,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:57,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:40:57,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:40:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:40:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:57,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:40:57,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:40:57,841 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:40:57,906 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-26 21:40:57,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:40:57,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:40:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:40:59,159 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:40:59,159 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2018-09-26 21:40:59,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-26 21:40:59,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-26 21:40:59,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:40:59,161 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand 58 states. [2018-09-26 21:41:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:00,133 INFO L93 Difference]: Finished difference Result 150 states and 208 transitions. [2018-09-26 21:41:00,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-26 21:41:00,133 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 138 [2018-09-26 21:41:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:00,134 INFO L225 Difference]: With dead ends: 150 [2018-09-26 21:41:00,134 INFO L226 Difference]: Without dead ends: 148 [2018-09-26 21:41:00,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-26 21:41:00,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-09-26 21:41:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-26 21:41:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2018-09-26 21:41:00,140 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 138 [2018-09-26 21:41:00,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:00,140 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2018-09-26 21:41:00,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-26 21:41:00,140 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2018-09-26 21:41:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-26 21:41:00,141 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:00,141 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-09-26 21:41:00,142 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:00,142 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:00,142 INFO L82 PathProgramCache]: Analyzing trace with hash -247256096, now seen corresponding path program 28 times [2018-09-26 21:41:00,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:00,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:00,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:00,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:00,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:00,494 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:00,494 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:41:00,502 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:41:00,543 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:41:00,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:00,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:02,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:02,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-09-26 21:41:02,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-26 21:41:02,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-26 21:41:02,094 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:02,094 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 60 states. [2018-09-26 21:41:03,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:03,222 INFO L93 Difference]: Finished difference Result 155 states and 215 transitions. [2018-09-26 21:41:03,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-26 21:41:03,222 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 143 [2018-09-26 21:41:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:03,224 INFO L225 Difference]: With dead ends: 155 [2018-09-26 21:41:03,224 INFO L226 Difference]: Without dead ends: 153 [2018-09-26 21:41:03,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:03,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-26 21:41:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-09-26 21:41:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-26 21:41:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 207 transitions. [2018-09-26 21:41:03,230 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 207 transitions. Word has length 143 [2018-09-26 21:41:03,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:03,231 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 207 transitions. [2018-09-26 21:41:03,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-26 21:41:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 207 transitions. [2018-09-26 21:41:03,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-26 21:41:03,231 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:03,232 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-09-26 21:41:03,232 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:03,232 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:03,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1791588433, now seen corresponding path program 29 times [2018-09-26 21:41:03,232 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:03,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:03,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:03,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:03,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:04,224 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:04,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:41:04,232 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:41:04,301 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-26 21:41:04,301 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:04,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:05,633 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:05,633 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2018-09-26 21:41:05,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-26 21:41:05,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-26 21:41:05,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:05,636 INFO L87 Difference]: Start difference. First operand 149 states and 207 transitions. Second operand 62 states. [2018-09-26 21:41:06,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:06,885 INFO L93 Difference]: Finished difference Result 160 states and 222 transitions. [2018-09-26 21:41:06,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-26 21:41:06,885 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 148 [2018-09-26 21:41:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:06,887 INFO L225 Difference]: With dead ends: 160 [2018-09-26 21:41:06,887 INFO L226 Difference]: Without dead ends: 158 [2018-09-26 21:41:06,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-26 21:41:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-09-26 21:41:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-26 21:41:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 214 transitions. [2018-09-26 21:41:06,892 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 214 transitions. Word has length 148 [2018-09-26 21:41:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:06,893 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 214 transitions. [2018-09-26 21:41:06,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-26 21:41:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 214 transitions. [2018-09-26 21:41:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-26 21:41:06,894 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:06,894 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-09-26 21:41:06,894 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:06,894 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:06,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1713785472, now seen corresponding path program 30 times [2018-09-26 21:41:06,895 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:06,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:06,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:06,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:06,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:07,260 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:07,261 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:41:07,268 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:41:07,337 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-26 21:41:07,337 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:07,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:08,630 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:08,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-09-26 21:41:08,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-26 21:41:08,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-26 21:41:08,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:08,632 INFO L87 Difference]: Start difference. First operand 154 states and 214 transitions. Second operand 64 states. [2018-09-26 21:41:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:09,902 INFO L93 Difference]: Finished difference Result 165 states and 229 transitions. [2018-09-26 21:41:09,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-26 21:41:09,903 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 153 [2018-09-26 21:41:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:09,904 INFO L225 Difference]: With dead ends: 165 [2018-09-26 21:41:09,904 INFO L226 Difference]: Without dead ends: 163 [2018-09-26 21:41:09,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:09,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-26 21:41:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-09-26 21:41:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-26 21:41:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 221 transitions. [2018-09-26 21:41:09,911 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 221 transitions. Word has length 153 [2018-09-26 21:41:09,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:09,911 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 221 transitions. [2018-09-26 21:41:09,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-26 21:41:09,911 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 221 transitions. [2018-09-26 21:41:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-26 21:41:09,912 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:09,912 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-09-26 21:41:09,913 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:09,913 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:09,913 INFO L82 PathProgramCache]: Analyzing trace with hash -835682895, now seen corresponding path program 31 times [2018-09-26 21:41:09,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:09,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:09,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:09,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:09,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:10,249 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:10,250 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:41:10,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:41:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:10,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:11,757 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:11,757 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2018-09-26 21:41:11,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-26 21:41:11,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-26 21:41:11,759 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:11,759 INFO L87 Difference]: Start difference. First operand 159 states and 221 transitions. Second operand 66 states. [2018-09-26 21:41:13,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:13,065 INFO L93 Difference]: Finished difference Result 170 states and 236 transitions. [2018-09-26 21:41:13,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-26 21:41:13,065 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 158 [2018-09-26 21:41:13,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:13,066 INFO L225 Difference]: With dead ends: 170 [2018-09-26 21:41:13,066 INFO L226 Difference]: Without dead ends: 168 [2018-09-26 21:41:13,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:13,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-26 21:41:13,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-09-26 21:41:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-26 21:41:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 228 transitions. [2018-09-26 21:41:13,073 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 228 transitions. Word has length 158 [2018-09-26 21:41:13,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:13,073 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 228 transitions. [2018-09-26 21:41:13,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-26 21:41:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 228 transitions. [2018-09-26 21:41:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-26 21:41:13,074 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:13,075 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-09-26 21:41:13,075 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:13,075 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:13,075 INFO L82 PathProgramCache]: Analyzing trace with hash 925606176, now seen corresponding path program 32 times [2018-09-26 21:41:13,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:13,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:13,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:13,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:41:13,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:13,392 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:13,392 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:41:13,399 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:41:13,456 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:41:13,456 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:13,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:15,101 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:15,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-09-26 21:41:15,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-26 21:41:15,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-26 21:41:15,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:15,105 INFO L87 Difference]: Start difference. First operand 164 states and 228 transitions. Second operand 68 states. [2018-09-26 21:41:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:16,644 INFO L93 Difference]: Finished difference Result 175 states and 243 transitions. [2018-09-26 21:41:16,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-26 21:41:16,645 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 163 [2018-09-26 21:41:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:16,646 INFO L225 Difference]: With dead ends: 175 [2018-09-26 21:41:16,646 INFO L226 Difference]: Without dead ends: 173 [2018-09-26 21:41:16,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-26 21:41:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-09-26 21:41:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-26 21:41:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 235 transitions. [2018-09-26 21:41:16,652 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 235 transitions. Word has length 163 [2018-09-26 21:41:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:16,653 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 235 transitions. [2018-09-26 21:41:16,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-26 21:41:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 235 transitions. [2018-09-26 21:41:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-26 21:41:16,654 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:16,654 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-09-26 21:41:16,654 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:16,654 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:16,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1441248495, now seen corresponding path program 33 times [2018-09-26 21:41:16,654 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:16,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:16,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:16,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:16,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:18,366 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:18,366 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:41:18,373 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:41:18,459 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-26 21:41:18,459 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:18,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:19,925 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:19,925 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2018-09-26 21:41:19,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-26 21:41:19,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-26 21:41:19,927 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:19,927 INFO L87 Difference]: Start difference. First operand 169 states and 235 transitions. Second operand 70 states. [2018-09-26 21:41:21,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:21,510 INFO L93 Difference]: Finished difference Result 180 states and 250 transitions. [2018-09-26 21:41:21,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-26 21:41:21,511 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 168 [2018-09-26 21:41:21,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:21,512 INFO L225 Difference]: With dead ends: 180 [2018-09-26 21:41:21,512 INFO L226 Difference]: Without dead ends: 178 [2018-09-26 21:41:21,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-26 21:41:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-09-26 21:41:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-26 21:41:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 242 transitions. [2018-09-26 21:41:21,518 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 242 transitions. Word has length 168 [2018-09-26 21:41:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:21,518 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 242 transitions. [2018-09-26 21:41:21,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-26 21:41:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 242 transitions. [2018-09-26 21:41:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-26 21:41:21,519 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:21,520 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-09-26 21:41:21,520 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:21,520 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:21,520 INFO L82 PathProgramCache]: Analyzing trace with hash 686632896, now seen corresponding path program 34 times [2018-09-26 21:41:21,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:21,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:21,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:21,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:21,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:21,921 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:21,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:41:21,930 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:41:21,978 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:41:21,979 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:21,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:23,461 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:23,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-09-26 21:41:23,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-26 21:41:23,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-26 21:41:23,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:23,464 INFO L87 Difference]: Start difference. First operand 174 states and 242 transitions. Second operand 72 states. [2018-09-26 21:41:25,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:25,250 INFO L93 Difference]: Finished difference Result 185 states and 257 transitions. [2018-09-26 21:41:25,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-26 21:41:25,250 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 173 [2018-09-26 21:41:25,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:25,252 INFO L225 Difference]: With dead ends: 185 [2018-09-26 21:41:25,252 INFO L226 Difference]: Without dead ends: 183 [2018-09-26 21:41:25,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-26 21:41:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-09-26 21:41:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-26 21:41:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 249 transitions. [2018-09-26 21:41:25,256 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 249 transitions. Word has length 173 [2018-09-26 21:41:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:25,257 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 249 transitions. [2018-09-26 21:41:25,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-26 21:41:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 249 transitions. [2018-09-26 21:41:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-26 21:41:25,258 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:25,258 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-09-26 21:41:25,258 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:25,259 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:25,259 INFO L82 PathProgramCache]: Analyzing trace with hash 170319985, now seen corresponding path program 35 times [2018-09-26 21:41:25,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:25,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:25,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:25,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:25,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:25,711 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:25,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:41:25,719 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:41:25,815 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-26 21:41:25,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:25,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:28,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:28,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 73 [2018-09-26 21:41:28,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-26 21:41:28,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-26 21:41:28,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:28,723 INFO L87 Difference]: Start difference. First operand 179 states and 249 transitions. Second operand 74 states. [2018-09-26 21:41:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:30,519 INFO L93 Difference]: Finished difference Result 190 states and 264 transitions. [2018-09-26 21:41:30,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-26 21:41:30,519 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 178 [2018-09-26 21:41:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:30,520 INFO L225 Difference]: With dead ends: 190 [2018-09-26 21:41:30,520 INFO L226 Difference]: Without dead ends: 188 [2018-09-26 21:41:30,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-26 21:41:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-09-26 21:41:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-26 21:41:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 256 transitions. [2018-09-26 21:41:30,527 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 256 transitions. Word has length 178 [2018-09-26 21:41:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:30,527 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 256 transitions. [2018-09-26 21:41:30,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-26 21:41:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 256 transitions. [2018-09-26 21:41:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-26 21:41:30,528 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:30,528 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-09-26 21:41:30,529 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:30,529 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:30,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2021329312, now seen corresponding path program 36 times [2018-09-26 21:41:30,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:30,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:30,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:30,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:30,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:32,032 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:32,032 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:41:32,041 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:41:32,124 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-26 21:41:32,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:32,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:34,361 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:34,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-09-26 21:41:34,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-26 21:41:34,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-26 21:41:34,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:34,364 INFO L87 Difference]: Start difference. First operand 184 states and 256 transitions. Second operand 76 states. [2018-09-26 21:41:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:36,184 INFO L93 Difference]: Finished difference Result 195 states and 271 transitions. [2018-09-26 21:41:36,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-26 21:41:36,184 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 183 [2018-09-26 21:41:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:36,185 INFO L225 Difference]: With dead ends: 195 [2018-09-26 21:41:36,186 INFO L226 Difference]: Without dead ends: 193 [2018-09-26 21:41:36,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:36,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-26 21:41:36,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-09-26 21:41:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-26 21:41:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2018-09-26 21:41:36,192 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 183 [2018-09-26 21:41:36,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:36,192 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2018-09-26 21:41:36,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-26 21:41:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2018-09-26 21:41:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-26 21:41:36,194 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:36,194 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-09-26 21:41:36,194 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:36,194 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:36,194 INFO L82 PathProgramCache]: Analyzing trace with hash 578960849, now seen corresponding path program 37 times [2018-09-26 21:41:36,195 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:36,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:36,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:36,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:36,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:37,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:37,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:41:37,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:41:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:37,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:38,878 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:38,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77 [2018-09-26 21:41:38,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-26 21:41:38,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-26 21:41:38,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:38,880 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand 78 states. [2018-09-26 21:41:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:40,799 INFO L93 Difference]: Finished difference Result 200 states and 278 transitions. [2018-09-26 21:41:40,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-26 21:41:40,799 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 188 [2018-09-26 21:41:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:40,800 INFO L225 Difference]: With dead ends: 200 [2018-09-26 21:41:40,800 INFO L226 Difference]: Without dead ends: 198 [2018-09-26 21:41:40,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-09-26 21:41:40,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-09-26 21:41:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-26 21:41:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2018-09-26 21:41:40,805 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 188 [2018-09-26 21:41:40,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:40,805 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2018-09-26 21:41:40,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-26 21:41:40,805 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2018-09-26 21:41:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-26 21:41:40,806 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:40,806 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-09-26 21:41:40,806 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:40,806 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:40,807 INFO L82 PathProgramCache]: Analyzing trace with hash -963840768, now seen corresponding path program 38 times [2018-09-26 21:41:40,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:40,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:40,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:40,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:41:40,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:41,300 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:41,300 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:41:41,309 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:41:41,364 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:41:41,364 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:41,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:43,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:43,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-09-26 21:41:43,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-26 21:41:43,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-26 21:41:43,203 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:43,204 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand 80 states. [2018-09-26 21:41:45,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:45,319 INFO L93 Difference]: Finished difference Result 205 states and 285 transitions. [2018-09-26 21:41:45,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-26 21:41:45,319 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 193 [2018-09-26 21:41:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:45,320 INFO L225 Difference]: With dead ends: 205 [2018-09-26 21:41:45,320 INFO L226 Difference]: Without dead ends: 203 [2018-09-26 21:41:45,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-26 21:41:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-09-26 21:41:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-26 21:41:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 277 transitions. [2018-09-26 21:41:45,325 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 277 transitions. Word has length 193 [2018-09-26 21:41:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:45,326 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 277 transitions. [2018-09-26 21:41:45,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-26 21:41:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 277 transitions. [2018-09-26 21:41:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-26 21:41:45,327 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:45,327 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-09-26 21:41:45,327 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:45,327 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:45,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1345297615, now seen corresponding path program 39 times [2018-09-26 21:41:45,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:45,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:45,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:45,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:45,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:45,898 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:45,898 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 [2018-09-26 21:41:45,908 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:41:46,034 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-26 21:41:46,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:46,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:47,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:47,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 81 [2018-09-26 21:41:47,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-26 21:41:47,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-26 21:41:47,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:47,919 INFO L87 Difference]: Start difference. First operand 199 states and 277 transitions. Second operand 82 states. [2018-09-26 21:41:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:50,331 INFO L93 Difference]: Finished difference Result 210 states and 292 transitions. [2018-09-26 21:41:50,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-26 21:41:50,332 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 198 [2018-09-26 21:41:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:50,333 INFO L225 Difference]: With dead ends: 210 [2018-09-26 21:41:50,333 INFO L226 Difference]: Without dead ends: 208 [2018-09-26 21:41:50,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-09-26 21:41:50,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-09-26 21:41:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-09-26 21:41:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 284 transitions. [2018-09-26 21:41:50,337 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 284 transitions. Word has length 198 [2018-09-26 21:41:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:50,338 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 284 transitions. [2018-09-26 21:41:50,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-26 21:41:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 284 transitions. [2018-09-26 21:41:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-26 21:41:50,339 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:50,339 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-09-26 21:41:50,339 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:50,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:50,339 INFO L82 PathProgramCache]: Analyzing trace with hash 555690912, now seen corresponding path program 40 times [2018-09-26 21:41:50,339 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:50,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:50,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:50,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:50,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:50,760 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:50,760 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 [2018-09-26 21:41:50,769 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:41:50,841 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:41:50,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:50,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:41:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:53,367 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:41:53,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-09-26 21:41:53,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-26 21:41:53,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-26 21:41:53,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:41:53,370 INFO L87 Difference]: Start difference. First operand 204 states and 284 transitions. Second operand 84 states. [2018-09-26 21:41:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:41:55,762 INFO L93 Difference]: Finished difference Result 215 states and 299 transitions. [2018-09-26 21:41:55,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-26 21:41:55,763 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 203 [2018-09-26 21:41:55,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:41:55,764 INFO L225 Difference]: With dead ends: 215 [2018-09-26 21:41:55,764 INFO L226 Difference]: Without dead ends: 213 [2018-09-26 21:41:55,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:41:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-26 21:41:55,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-09-26 21:41:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-26 21:41:55,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 291 transitions. [2018-09-26 21:41:55,770 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 291 transitions. Word has length 203 [2018-09-26 21:41:55,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:41:55,771 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 291 transitions. [2018-09-26 21:41:55,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-26 21:41:55,771 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 291 transitions. [2018-09-26 21:41:55,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-26 21:41:55,772 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:41:55,772 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-09-26 21:41:55,772 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:41:55,773 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:41:55,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1463242897, now seen corresponding path program 41 times [2018-09-26 21:41:55,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:41:55,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:41:55,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:55,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:41:55,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:41:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:41:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:41:56,189 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:41:56,189 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 [2018-09-26 21:41:56,199 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:41:56,311 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-26 21:41:56,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:41:56,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:00,689 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:00,689 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 85 [2018-09-26 21:42:00,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-26 21:42:00,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-26 21:42:00,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:00,692 INFO L87 Difference]: Start difference. First operand 209 states and 291 transitions. Second operand 86 states. [2018-09-26 21:42:03,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:03,165 INFO L93 Difference]: Finished difference Result 220 states and 306 transitions. [2018-09-26 21:42:03,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-26 21:42:03,165 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 208 [2018-09-26 21:42:03,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:03,166 INFO L225 Difference]: With dead ends: 220 [2018-09-26 21:42:03,167 INFO L226 Difference]: Without dead ends: 218 [2018-09-26 21:42:03,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-09-26 21:42:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-09-26 21:42:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-09-26 21:42:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 298 transitions. [2018-09-26 21:42:03,173 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 298 transitions. Word has length 208 [2018-09-26 21:42:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:03,174 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 298 transitions. [2018-09-26 21:42:03,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-26 21:42:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 298 transitions. [2018-09-26 21:42:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-26 21:42:03,174 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:03,175 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-09-26 21:42:03,175 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:03,175 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:03,175 INFO L82 PathProgramCache]: Analyzing trace with hash 970299968, now seen corresponding path program 42 times [2018-09-26 21:42:03,175 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:03,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:03,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:03,176 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:03,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:03,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:03,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:42:03,666 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:42:03,766 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-26 21:42:03,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:03,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:06,062 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:06,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-09-26 21:42:06,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-26 21:42:06,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-26 21:42:06,065 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:06,065 INFO L87 Difference]: Start difference. First operand 214 states and 298 transitions. Second operand 88 states. [2018-09-26 21:42:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:08,785 INFO L93 Difference]: Finished difference Result 225 states and 313 transitions. [2018-09-26 21:42:08,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-26 21:42:08,785 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 213 [2018-09-26 21:42:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:08,786 INFO L225 Difference]: With dead ends: 225 [2018-09-26 21:42:08,787 INFO L226 Difference]: Without dead ends: 223 [2018-09-26 21:42:08,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-26 21:42:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-09-26 21:42:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-26 21:42:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 305 transitions. [2018-09-26 21:42:08,791 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 305 transitions. Word has length 213 [2018-09-26 21:42:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:08,791 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 305 transitions. [2018-09-26 21:42:08,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-26 21:42:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 305 transitions. [2018-09-26 21:42:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-26 21:42:08,793 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:08,793 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-09-26 21:42:08,793 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:08,793 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:08,793 INFO L82 PathProgramCache]: Analyzing trace with hash 106759665, now seen corresponding path program 43 times [2018-09-26 21:42:08,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:08,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:08,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:08,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:08,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:09,940 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:09,940 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 [2018-09-26 21:42:09,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:42:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:10,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:12,264 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:12,264 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 89 [2018-09-26 21:42:12,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-26 21:42:12,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-26 21:42:12,268 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:12,268 INFO L87 Difference]: Start difference. First operand 219 states and 305 transitions. Second operand 90 states. [2018-09-26 21:42:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:14,961 INFO L93 Difference]: Finished difference Result 230 states and 320 transitions. [2018-09-26 21:42:14,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-26 21:42:14,961 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 218 [2018-09-26 21:42:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:14,962 INFO L225 Difference]: With dead ends: 230 [2018-09-26 21:42:14,962 INFO L226 Difference]: Without dead ends: 228 [2018-09-26 21:42:14,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-09-26 21:42:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-09-26 21:42:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-09-26 21:42:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 312 transitions. [2018-09-26 21:42:14,968 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 312 transitions. Word has length 218 [2018-09-26 21:42:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:14,968 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 312 transitions. [2018-09-26 21:42:14,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-26 21:42:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 312 transitions. [2018-09-26 21:42:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-26 21:42:14,969 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:14,969 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-09-26 21:42:14,970 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:14,970 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:14,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1161150240, now seen corresponding path program 44 times [2018-09-26 21:42:14,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:14,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:14,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:14,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:42:14,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:15,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:15,403 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 [2018-09-26 21:42:15,411 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:42:15,473 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:42:15,473 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:15,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:17,762 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:17,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-09-26 21:42:17,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-26 21:42:17,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-26 21:42:17,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:17,766 INFO L87 Difference]: Start difference. First operand 224 states and 312 transitions. Second operand 92 states. [2018-09-26 21:42:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:20,830 INFO L93 Difference]: Finished difference Result 235 states and 327 transitions. [2018-09-26 21:42:20,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-26 21:42:20,830 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 223 [2018-09-26 21:42:20,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:20,831 INFO L225 Difference]: With dead ends: 235 [2018-09-26 21:42:20,831 INFO L226 Difference]: Without dead ends: 233 [2018-09-26 21:42:20,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-09-26 21:42:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-09-26 21:42:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-26 21:42:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 319 transitions. [2018-09-26 21:42:20,836 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 319 transitions. Word has length 223 [2018-09-26 21:42:20,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:20,837 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 319 transitions. [2018-09-26 21:42:20,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-26 21:42:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 319 transitions. [2018-09-26 21:42:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-26 21:42:20,838 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:20,838 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-09-26 21:42:20,838 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:20,839 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:20,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1399292753, now seen corresponding path program 45 times [2018-09-26 21:42:20,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:20,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:20,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:20,840 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:20,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:21,329 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:21,329 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:42:21,339 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:42:21,455 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-26 21:42:21,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:21,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:23,891 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:23,892 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2018-09-26 21:42:23,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-26 21:42:23,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-26 21:42:23,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:23,897 INFO L87 Difference]: Start difference. First operand 229 states and 319 transitions. Second operand 94 states. [2018-09-26 21:42:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:27,154 INFO L93 Difference]: Finished difference Result 240 states and 334 transitions. [2018-09-26 21:42:27,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-26 21:42:27,155 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 228 [2018-09-26 21:42:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:27,156 INFO L225 Difference]: With dead ends: 240 [2018-09-26 21:42:27,156 INFO L226 Difference]: Without dead ends: 238 [2018-09-26 21:42:27,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-09-26 21:42:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-09-26 21:42:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-09-26 21:42:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 326 transitions. [2018-09-26 21:42:27,163 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 326 transitions. Word has length 228 [2018-09-26 21:42:27,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:27,163 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 326 transitions. [2018-09-26 21:42:27,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-26 21:42:27,163 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 326 transitions. [2018-09-26 21:42:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-09-26 21:42:27,165 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:27,165 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-09-26 21:42:27,165 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:27,165 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:27,165 INFO L82 PathProgramCache]: Analyzing trace with hash -174645376, now seen corresponding path program 46 times [2018-09-26 21:42:27,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:27,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:27,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:27,166 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:27,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:27,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:27,636 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 [2018-09-26 21:42:27,644 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:42:27,723 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:42:27,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:27,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:30,446 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:30,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-09-26 21:42:30,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-26 21:42:30,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-26 21:42:30,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:30,450 INFO L87 Difference]: Start difference. First operand 234 states and 326 transitions. Second operand 96 states. [2018-09-26 21:42:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:33,649 INFO L93 Difference]: Finished difference Result 245 states and 341 transitions. [2018-09-26 21:42:33,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-26 21:42:33,650 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 233 [2018-09-26 21:42:33,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:33,651 INFO L225 Difference]: With dead ends: 245 [2018-09-26 21:42:33,651 INFO L226 Difference]: Without dead ends: 243 [2018-09-26 21:42:33,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:33,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-26 21:42:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-09-26 21:42:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-26 21:42:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 333 transitions. [2018-09-26 21:42:33,659 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 333 transitions. Word has length 233 [2018-09-26 21:42:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:33,659 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 333 transitions. [2018-09-26 21:42:33,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-26 21:42:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 333 transitions. [2018-09-26 21:42:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-26 21:42:33,660 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:33,661 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-09-26 21:42:33,661 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:33,661 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:33,661 INFO L82 PathProgramCache]: Analyzing trace with hash -587413327, now seen corresponding path program 47 times [2018-09-26 21:42:33,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:33,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:33,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:33,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:33,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:34,417 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:34,417 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 [2018-09-26 21:42:34,424 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:42:34,539 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-26 21:42:34,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:34,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:37,164 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:37,164 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2018-09-26 21:42:37,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-26 21:42:37,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-26 21:42:37,169 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:37,169 INFO L87 Difference]: Start difference. First operand 239 states and 333 transitions. Second operand 98 states. [2018-09-26 21:42:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:40,794 INFO L93 Difference]: Finished difference Result 250 states and 348 transitions. [2018-09-26 21:42:40,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-26 21:42:40,795 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 238 [2018-09-26 21:42:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:40,796 INFO L225 Difference]: With dead ends: 250 [2018-09-26 21:42:40,796 INFO L226 Difference]: Without dead ends: 248 [2018-09-26 21:42:40,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:40,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-09-26 21:42:40,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-09-26 21:42:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-09-26 21:42:40,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 340 transitions. [2018-09-26 21:42:40,803 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 340 transitions. Word has length 238 [2018-09-26 21:42:40,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:40,804 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 340 transitions. [2018-09-26 21:42:40,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-26 21:42:40,804 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 340 transitions. [2018-09-26 21:42:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-26 21:42:40,805 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:40,805 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-09-26 21:42:40,806 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:40,806 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:40,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2091502048, now seen corresponding path program 48 times [2018-09-26 21:42:40,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:40,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:40,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:40,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:40,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:41,346 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:41,346 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 [2018-09-26 21:42:41,354 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:42:41,472 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-26 21:42:41,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:41,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:44,168 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:44,168 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-09-26 21:42:44,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-26 21:42:44,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-26 21:42:44,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:44,173 INFO L87 Difference]: Start difference. First operand 244 states and 340 transitions. Second operand 100 states. [2018-09-26 21:42:48,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:48,148 INFO L93 Difference]: Finished difference Result 255 states and 355 transitions. [2018-09-26 21:42:48,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-26 21:42:48,149 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 243 [2018-09-26 21:42:48,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:48,150 INFO L225 Difference]: With dead ends: 255 [2018-09-26 21:42:48,150 INFO L226 Difference]: Without dead ends: 253 [2018-09-26 21:42:48,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:48,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-09-26 21:42:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-09-26 21:42:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-09-26 21:42:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 347 transitions. [2018-09-26 21:42:48,155 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 347 transitions. Word has length 243 [2018-09-26 21:42:48,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:48,155 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 347 transitions. [2018-09-26 21:42:48,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-26 21:42:48,155 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 347 transitions. [2018-09-26 21:42:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-26 21:42:48,156 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:48,156 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-09-26 21:42:48,156 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:48,156 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:48,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1438460399, now seen corresponding path program 49 times [2018-09-26 21:42:48,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:48,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:48,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:48,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:42:48,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:48,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:48,789 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 [2018-09-26 21:42:48,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:42:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:48,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:51,685 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:51,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 101 [2018-09-26 21:42:51,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-26 21:42:51,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-26 21:42:51,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:51,695 INFO L87 Difference]: Start difference. First operand 249 states and 347 transitions. Second operand 102 states. [2018-09-26 21:42:55,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:42:55,792 INFO L93 Difference]: Finished difference Result 260 states and 362 transitions. [2018-09-26 21:42:55,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-26 21:42:55,793 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 248 [2018-09-26 21:42:55,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:42:55,796 INFO L225 Difference]: With dead ends: 260 [2018-09-26 21:42:55,797 INFO L226 Difference]: Without dead ends: 258 [2018-09-26 21:42:55,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:42:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-09-26 21:42:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2018-09-26 21:42:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-09-26 21:42:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 354 transitions. [2018-09-26 21:42:55,806 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 354 transitions. Word has length 248 [2018-09-26 21:42:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:42:55,811 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 354 transitions. [2018-09-26 21:42:55,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-26 21:42:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 354 transitions. [2018-09-26 21:42:55,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-09-26 21:42:55,814 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:42:55,815 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1] [2018-09-26 21:42:55,815 INFO L423 AbstractCegarLoop]: === Iteration 52 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:42:55,815 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:42:55,815 INFO L82 PathProgramCache]: Analyzing trace with hash -459176768, now seen corresponding path program 50 times [2018-09-26 21:42:55,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:42:55,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:42:55,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:55,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:42:55,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:42:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:42:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:56,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:42:56,528 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 [2018-09-26 21:42:56,537 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:42:56,611 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:42:56,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:42:56,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:42:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:42:59,574 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:42:59,575 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-09-26 21:42:59,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-26 21:42:59,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-26 21:42:59,581 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:42:59,581 INFO L87 Difference]: Start difference. First operand 254 states and 354 transitions. Second operand 104 states. [2018-09-26 21:43:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:03,755 INFO L93 Difference]: Finished difference Result 265 states and 369 transitions. [2018-09-26 21:43:03,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-26 21:43:03,755 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 253 [2018-09-26 21:43:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:03,756 INFO L225 Difference]: With dead ends: 265 [2018-09-26 21:43:03,756 INFO L226 Difference]: Without dead ends: 263 [2018-09-26 21:43:03,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-26 21:43:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-09-26 21:43:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-26 21:43:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 361 transitions. [2018-09-26 21:43:03,764 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 361 transitions. Word has length 253 [2018-09-26 21:43:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:03,764 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 361 transitions. [2018-09-26 21:43:03,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-26 21:43:03,764 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 361 transitions. [2018-09-26 21:43:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-26 21:43:03,766 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:03,766 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 1, 1, 1] [2018-09-26 21:43:03,766 INFO L423 AbstractCegarLoop]: === Iteration 53 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:03,766 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:03,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053071, now seen corresponding path program 51 times [2018-09-26 21:43:03,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:03,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:03,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:03,767 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:43:03,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:04,432 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:04,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:43:04,442 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:43:04,594 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-26 21:43:04,595 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:43:04,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:07,633 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:07,633 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2018-09-26 21:43:07,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-26 21:43:07,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-26 21:43:07,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:07,639 INFO L87 Difference]: Start difference. First operand 259 states and 361 transitions. Second operand 106 states. [2018-09-26 21:43:12,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:12,208 INFO L93 Difference]: Finished difference Result 270 states and 376 transitions. [2018-09-26 21:43:12,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-26 21:43:12,208 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 258 [2018-09-26 21:43:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:12,209 INFO L225 Difference]: With dead ends: 270 [2018-09-26 21:43:12,209 INFO L226 Difference]: Without dead ends: 268 [2018-09-26 21:43:12,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-09-26 21:43:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2018-09-26 21:43:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-09-26 21:43:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 368 transitions. [2018-09-26 21:43:12,216 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 368 transitions. Word has length 258 [2018-09-26 21:43:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:12,216 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 368 transitions. [2018-09-26 21:43:12,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-26 21:43:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 368 transitions. [2018-09-26 21:43:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-09-26 21:43:12,217 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:12,217 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 1, 1, 1] [2018-09-26 21:43:12,217 INFO L423 AbstractCegarLoop]: === Iteration 54 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:12,217 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:12,218 INFO L82 PathProgramCache]: Analyzing trace with hash 563284832, now seen corresponding path program 52 times [2018-09-26 21:43:12,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:12,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:12,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:12,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:43:12,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:13,341 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:13,341 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 [2018-09-26 21:43:13,350 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:43:13,429 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:43:13,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:43:13,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:16,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:16,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-09-26 21:43:16,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-26 21:43:16,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-26 21:43:16,590 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:16,590 INFO L87 Difference]: Start difference. First operand 264 states and 368 transitions. Second operand 108 states. [2018-09-26 21:43:21,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:21,351 INFO L93 Difference]: Finished difference Result 275 states and 383 transitions. [2018-09-26 21:43:21,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-26 21:43:21,352 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 263 [2018-09-26 21:43:21,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:21,353 INFO L225 Difference]: With dead ends: 275 [2018-09-26 21:43:21,353 INFO L226 Difference]: Without dead ends: 273 [2018-09-26 21:43:21,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-09-26 21:43:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2018-09-26 21:43:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-09-26 21:43:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 375 transitions. [2018-09-26 21:43:21,358 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 375 transitions. Word has length 263 [2018-09-26 21:43:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:21,358 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 375 transitions. [2018-09-26 21:43:21,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-26 21:43:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 375 transitions. [2018-09-26 21:43:21,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-09-26 21:43:21,359 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:21,359 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 1, 1, 1] [2018-09-26 21:43:21,359 INFO L423 AbstractCegarLoop]: === Iteration 55 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:21,359 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:21,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1996048593, now seen corresponding path program 53 times [2018-09-26 21:43:21,359 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:21,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:21,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:21,360 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:43:21,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:21,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:21,908 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 [2018-09-26 21:43:21,916 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:43:22,052 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-26 21:43:22,052 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:43:22,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:25,312 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:25,312 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 109 [2018-09-26 21:43:25,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-26 21:43:25,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-26 21:43:25,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:25,317 INFO L87 Difference]: Start difference. First operand 269 states and 375 transitions. Second operand 110 states. [2018-09-26 21:43:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:30,298 INFO L93 Difference]: Finished difference Result 280 states and 390 transitions. [2018-09-26 21:43:30,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-26 21:43:30,298 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 268 [2018-09-26 21:43:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:30,299 INFO L225 Difference]: With dead ends: 280 [2018-09-26 21:43:30,299 INFO L226 Difference]: Without dead ends: 278 [2018-09-26 21:43:30,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-09-26 21:43:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2018-09-26 21:43:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-09-26 21:43:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 382 transitions. [2018-09-26 21:43:30,306 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 382 transitions. Word has length 268 [2018-09-26 21:43:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:30,307 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 382 transitions. [2018-09-26 21:43:30,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-26 21:43:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 382 transitions. [2018-09-26 21:43:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-26 21:43:30,308 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:30,308 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 1, 1, 1] [2018-09-26 21:43:30,309 INFO L423 AbstractCegarLoop]: === Iteration 56 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:30,309 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:30,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1774504448, now seen corresponding path program 54 times [2018-09-26 21:43:30,309 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:30,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:30,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:30,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:43:30,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:30,889 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:30,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:43:30,897 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:43:31,024 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-26 21:43:31,024 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:43:31,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:34,339 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:34,340 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-09-26 21:43:34,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-26 21:43:34,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-26 21:43:34,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:34,346 INFO L87 Difference]: Start difference. First operand 274 states and 382 transitions. Second operand 112 states. [2018-09-26 21:43:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:39,404 INFO L93 Difference]: Finished difference Result 285 states and 397 transitions. [2018-09-26 21:43:39,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-26 21:43:39,404 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 273 [2018-09-26 21:43:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:39,405 INFO L225 Difference]: With dead ends: 285 [2018-09-26 21:43:39,405 INFO L226 Difference]: Without dead ends: 283 [2018-09-26 21:43:39,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-26 21:43:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-09-26 21:43:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-26 21:43:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 389 transitions. [2018-09-26 21:43:39,413 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 389 transitions. Word has length 273 [2018-09-26 21:43:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:39,414 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 389 transitions. [2018-09-26 21:43:39,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-26 21:43:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 389 transitions. [2018-09-26 21:43:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-26 21:43:39,415 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:39,415 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 1, 1, 1] [2018-09-26 21:43:39,415 INFO L423 AbstractCegarLoop]: === Iteration 57 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:39,416 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:39,416 INFO L82 PathProgramCache]: Analyzing trace with hash -281694671, now seen corresponding path program 55 times [2018-09-26 21:43:39,416 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:39,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:39,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:39,417 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:43:39,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:40,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:40,147 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 [2018-09-26 21:43:40,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:43:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:40,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:43,770 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:43,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 113 [2018-09-26 21:43:43,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-26 21:43:43,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-26 21:43:43,776 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:43,777 INFO L87 Difference]: Start difference. First operand 279 states and 389 transitions. Second operand 114 states. [2018-09-26 21:43:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:48,899 INFO L93 Difference]: Finished difference Result 290 states and 404 transitions. [2018-09-26 21:43:48,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-26 21:43:48,900 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 278 [2018-09-26 21:43:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:48,901 INFO L225 Difference]: With dead ends: 290 [2018-09-26 21:43:48,901 INFO L226 Difference]: Without dead ends: 288 [2018-09-26 21:43:48,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:48,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-09-26 21:43:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2018-09-26 21:43:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-09-26 21:43:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 396 transitions. [2018-09-26 21:43:48,906 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 396 transitions. Word has length 278 [2018-09-26 21:43:48,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:48,907 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 396 transitions. [2018-09-26 21:43:48,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-26 21:43:48,907 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 396 transitions. [2018-09-26 21:43:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-09-26 21:43:48,908 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:48,908 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 1, 1, 1] [2018-09-26 21:43:48,908 INFO L423 AbstractCegarLoop]: === Iteration 58 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:48,908 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:48,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1269776224, now seen corresponding path program 56 times [2018-09-26 21:43:48,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:48,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:48,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:48,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:43:48,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:49,650 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:49,650 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 [2018-09-26 21:43:49,658 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:43:49,732 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:43:49,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:43:49,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:43:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:53,403 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:43:53,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-09-26 21:43:53,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-26 21:43:53,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-26 21:43:53,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:43:53,409 INFO L87 Difference]: Start difference. First operand 284 states and 396 transitions. Second operand 116 states. [2018-09-26 21:43:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:43:59,277 INFO L93 Difference]: Finished difference Result 295 states and 411 transitions. [2018-09-26 21:43:59,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-26 21:43:59,277 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 283 [2018-09-26 21:43:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:43:59,278 INFO L225 Difference]: With dead ends: 295 [2018-09-26 21:43:59,278 INFO L226 Difference]: Without dead ends: 293 [2018-09-26 21:43:59,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:43:59,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-09-26 21:43:59,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2018-09-26 21:43:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-09-26 21:43:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2018-09-26 21:43:59,283 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 283 [2018-09-26 21:43:59,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:43:59,283 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2018-09-26 21:43:59,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-26 21:43:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2018-09-26 21:43:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-09-26 21:43:59,284 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:43:59,285 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 1, 1, 1] [2018-09-26 21:43:59,285 INFO L423 AbstractCegarLoop]: === Iteration 59 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:43:59,285 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:43:59,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1555749777, now seen corresponding path program 57 times [2018-09-26 21:43:59,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:43:59,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:43:59,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:59,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:43:59,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:43:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:43:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:43:59,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:43:59,884 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 [2018-09-26 21:43:59,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:44:00,036 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-26 21:44:00,036 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:00,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:03,765 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:03,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 117 [2018-09-26 21:44:03,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-26 21:44:03,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-26 21:44:03,772 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:03,772 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand 118 states. [2018-09-26 21:44:09,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:09,488 INFO L93 Difference]: Finished difference Result 300 states and 418 transitions. [2018-09-26 21:44:09,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-26 21:44:09,489 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 288 [2018-09-26 21:44:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:09,490 INFO L225 Difference]: With dead ends: 300 [2018-09-26 21:44:09,490 INFO L226 Difference]: Without dead ends: 298 [2018-09-26 21:44:09,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:09,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-09-26 21:44:09,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2018-09-26 21:44:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-09-26 21:44:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 410 transitions. [2018-09-26 21:44:09,497 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 410 transitions. Word has length 288 [2018-09-26 21:44:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:09,498 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 410 transitions. [2018-09-26 21:44:09,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-26 21:44:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 410 transitions. [2018-09-26 21:44:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-26 21:44:09,499 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:09,499 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 1, 1, 1] [2018-09-26 21:44:09,500 INFO L423 AbstractCegarLoop]: === Iteration 60 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:09,500 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1607528256, now seen corresponding path program 58 times [2018-09-26 21:44:09,500 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:09,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:09,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:09,501 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:09,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:10,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:10,120 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 [2018-09-26 21:44:10,138 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:44:10,219 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:44:10,219 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:10,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:44:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:14,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:44:14,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-09-26 21:44:14,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-26 21:44:14,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-26 21:44:14,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:44:14,123 INFO L87 Difference]: Start difference. First operand 294 states and 410 transitions. Second operand 120 states. [2018-09-26 21:44:19,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:44:19,719 INFO L93 Difference]: Finished difference Result 305 states and 425 transitions. [2018-09-26 21:44:19,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-26 21:44:19,719 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 293 [2018-09-26 21:44:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:44:19,720 INFO L225 Difference]: With dead ends: 305 [2018-09-26 21:44:19,720 INFO L226 Difference]: Without dead ends: 303 [2018-09-26 21:44:19,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:44:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-26 21:44:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-09-26 21:44:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-09-26 21:44:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 417 transitions. [2018-09-26 21:44:19,729 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 417 transitions. Word has length 293 [2018-09-26 21:44:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:44:19,729 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 417 transitions. [2018-09-26 21:44:19,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-26 21:44:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 417 transitions. [2018-09-26 21:44:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-26 21:44:19,731 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:44:19,731 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 1, 1, 1] [2018-09-26 21:44:19,731 INFO L423 AbstractCegarLoop]: === Iteration 61 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:44:19,731 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:44:19,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1898893553, now seen corresponding path program 59 times [2018-09-26 21:44:19,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:44:19,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:44:19,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:19,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:44:19,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:44:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:44:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:44:20,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:44:20,369 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 [2018-09-26 21:44:20,382 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:44:20,532 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-26 21:44:20,533 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:44:20,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-26 21:44:21,974 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-26 21:44:22,175 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:44:22,176 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-26 21:44:22,181 WARN L206 ceAbstractionStarter]: Timeout [2018-09-26 21:44:22,181 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:44:22 BoogieIcfgContainer [2018-09-26 21:44:22,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 21:44:22,182 INFO L168 Benchmark]: Toolchain (without parser) took 249985.20 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -65.5 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 183.0 MB). Peak memory consumption was 556.6 MB. Max. memory is 7.1 GB. [2018-09-26 21:44:22,185 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:44:22,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:44:22,186 INFO L168 Benchmark]: Boogie Preprocessor took 28.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:44:22,186 INFO L168 Benchmark]: RCFGBuilder took 357.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-26 21:44:22,187 INFO L168 Benchmark]: TraceAbstraction took 249546.96 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -65.5 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 161.9 MB). Peak memory consumption was 535.5 MB. Max. memory is 7.1 GB. [2018-09-26 21:44:22,191 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 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 357.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249546.96 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -65.5 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 161.9 MB). Peak memory consumption was 535.5 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 299 with TraceHistMax 59, 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, 249.4s OverallTime, 61 OverallIterations, 59 TraceHistogramMax, 111.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 493 SDtfs, 21205 SDslu, 15210 SDs, 0 SdLazy, 7240 SolverSat, 213 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10502 GetRequests, 6962 SyntacticMatches, 0 SemanticMatches, 3540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=299occurred in iteration=60, 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: 0.3s AutomataMinimizationTime, 60 MinimizatonAttempts, 236 StatesRemovedByMinimization, 59 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 126.7s InterpolantComputationTime, 17468 NumberOfCodeBlocks, 17468 NumberOfCodeBlocksAsserted, 969 NumberOfCheckSat, 17350 ConstructedInterpolants, 8613 QuantifiedInterpolants, 32203504 SizeOfPredicates, 1885 NumberOfNonLiveVariables, 16327 ConjunctsInSsa, 3654 ConjunctsInUnsatCore, 118 InterpolantComputations, 2 PerfectInterpolantSequences, 1/328513 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-0-2018-09-26_21-44-22-205.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-0-2018-09-26_21-44-22-205.csv Completed graceful shutdown