java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/real-life/GateController.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b2fde6a [2018-09-28 10:23:50,368 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-28 10:23:50,370 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-28 10:23:50,383 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-28 10:23:50,384 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-28 10:23:50,385 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-28 10:23:50,387 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-28 10:23:50,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-28 10:23:50,391 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-28 10:23:50,392 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-28 10:23:50,393 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-28 10:23:50,418 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 [2018-09-28 10:23:50,435 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-28 10:23:50,436 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-28 10:23:50,437 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-28 10:23:50,437 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-28 10:23:50,437 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-28 10:23:50,438 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-28 10:23:50,438 INFO L133 SettingsManager]: * Use SBE=true [2018-09-28 10:23:50,438 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-28 10:23:50,438 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-28 10:23:50,438 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-28 10:23:50,439 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-28 10:23:50,439 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-28 10:23:50,439 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-28 10:23:50,439 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-28 10:23:50,439 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-28 10:23:50,440 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-28 10:23:50,440 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-28 10:23:50,440 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-28 10:23:50,440 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-28 10:23:50,440 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-28 10:23:50,441 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-28 10:23:50,441 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-28 10:23:50,441 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 10:23:50,441 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-28 10:23:50,442 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-28 10:23:50,442 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-28 10:23:50,442 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-28 10:23:50,442 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-28 10:23:50,442 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-28 10:23:50,442 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-28 10:23:50,443 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-28 10:23:50,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-28 10:23:50,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-28 10:23:50,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-28 10:23:50,517 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-28 10:23:50,518 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-28 10:23:50,519 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl [2018-09-28 10:23:50,519 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl' [2018-09-28 10:23:50,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-28 10:23:50,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-28 10:23:50,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-28 10:23:50,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-28 10:23:50,581 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-28 10:23:50,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/1) ... [2018-09-28 10:23:50,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/1) ... [2018-09-28 10:23:50,624 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-28 10:23:50,624 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-28 10:23:50,625 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-28 10:23:50,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-28 10:23:50,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-28 10:23:50,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-28 10:23:50,628 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-28 10:23:50,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/1) ... [2018-09-28 10:23:50,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/1) ... [2018-09-28 10:23:50,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/1) ... [2018-09-28 10:23:50,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/1) ... [2018-09-28 10:23:50,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/1) ... [2018-09-28 10:23:50,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/1) ... [2018-09-28 10:23:50,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/1) ... [2018-09-28 10:23:50,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-28 10:23:50,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-28 10:23:50,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-28 10:23:50,658 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-28 10:23:50,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (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 [2018-09-28 10:23:50,744 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-28 10:23:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-28 10:23:50,744 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-28 10:23:51,034 INFO L350 CfgBuilder]: Using library mode [2018-09-28 10:23:51,035 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:23:51 BoogieIcfgContainer [2018-09-28 10:23:51,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-28 10:23:51,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-28 10:23:51,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-28 10:23:51,040 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-28 10:23:51,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:23:50" (1/2) ... [2018-09-28 10:23:51,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0aa113 and model type GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.09 10:23:51, skipping insertion in model container [2018-09-28 10:23:51,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:23:51" (2/2) ... [2018-09-28 10:23:51,045 INFO L112 eAbstractionObserver]: Analyzing ICFG GateController.bpl [2018-09-28 10:23:51,055 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-28 10:23:51,068 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-28 10:23:51,121 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-28 10:23:51,122 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-28 10:23:51,122 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-28 10:23:51,122 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-28 10:23:51,122 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-28 10:23:51,122 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-28 10:23:51,123 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-28 10:23:51,123 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-28 10:23:51,123 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-28 10:23:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-28 10:23:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-28 10:23:51,161 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:23:51,162 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-28 10:23:51,164 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:23:51,172 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:23:51,173 INFO L82 PathProgramCache]: Analyzing trace with hash 30432, now seen corresponding path program 1 times [2018-09-28 10:23:51,175 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:23:51,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:23:51,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:51,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:23:51,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:23:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:51,327 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:23:51,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-28 10:23:51,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 10:23:51,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 10:23:51,345 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:23:51,347 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-28 10:23:51,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:23:51,561 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-09-28 10:23:51,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 10:23:51,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-28 10:23:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:23:51,576 INFO L225 Difference]: With dead ends: 19 [2018-09-28 10:23:51,576 INFO L226 Difference]: Without dead ends: 13 [2018-09-28 10:23:51,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:23:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-28 10:23:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-28 10:23:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-28 10:23:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-28 10:23:51,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 3 [2018-09-28 10:23:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:23:51,617 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-28 10:23:51,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 10:23:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-28 10:23:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-28 10:23:51,618 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:23:51,619 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:23:51,619 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:23:51,619 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:23:51,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1953617644, now seen corresponding path program 1 times [2018-09-28 10:23:51,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:23:51,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:23:51,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:51,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:23:51,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:23:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:51,719 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:23:51,719 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 [2018-09-28 10:23:51,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:23:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:23:51,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:23:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:52,353 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:23:52,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-09-28 10:23:52,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-28 10:23:52,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-28 10:23:52,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:23:52,355 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 8 states. [2018-09-28 10:23:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:23:52,870 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-28 10:23:52,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-28 10:23:52,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-28 10:23:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:23:52,871 INFO L225 Difference]: With dead ends: 21 [2018-09-28 10:23:52,872 INFO L226 Difference]: Without dead ends: 19 [2018-09-28 10:23:52,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:23:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-28 10:23:52,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-09-28 10:23:52,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-28 10:23:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-09-28 10:23:52,878 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-09-28 10:23:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:23:52,880 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-09-28 10:23:52,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-28 10:23:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-09-28 10:23:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-28 10:23:52,881 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:23:52,881 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:23:52,881 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:23:52,882 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:23:52,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1953558062, now seen corresponding path program 1 times [2018-09-28 10:23:52,882 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:23:52,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:23:52,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:52,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:23:52,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:23:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:52,930 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:23:52,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-28 10:23:52,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 10:23:52,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 10:23:52,934 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:23:52,934 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2018-09-28 10:23:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:23:52,983 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-28 10:23:52,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 10:23:52,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-09-28 10:23:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:23:52,984 INFO L225 Difference]: With dead ends: 21 [2018-09-28 10:23:52,984 INFO L226 Difference]: Without dead ends: 14 [2018-09-28 10:23:52,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:23:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-28 10:23:52,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-28 10:23:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-28 10:23:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-09-28 10:23:52,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-09-28 10:23:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:23:52,989 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-09-28 10:23:52,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 10:23:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-09-28 10:23:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:23:52,990 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:23:52,991 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-09-28 10:23:52,991 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:23:52,991 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:23:52,991 INFO L82 PathProgramCache]: Analyzing trace with hash 72785504, now seen corresponding path program 2 times [2018-09-28 10:23:52,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:23:52,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:23:52,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:52,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:23:52,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:23:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:53,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:23:53,104 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 [2018-09-28 10:23:53,120 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:23:53,140 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:23:53,141 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:23:53,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:23:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:53,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:23:53,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-09-28 10:23:53,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-28 10:23:53,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-28 10:23:53,521 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:23:53,521 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 12 states. [2018-09-28 10:23:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:23:54,159 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-09-28 10:23:54,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-28 10:23:54,160 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-09-28 10:23:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:23:54,161 INFO L225 Difference]: With dead ends: 25 [2018-09-28 10:23:54,161 INFO L226 Difference]: Without dead ends: 23 [2018-09-28 10:23:54,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:23:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-28 10:23:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-09-28 10:23:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-28 10:23:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-09-28 10:23:54,170 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-09-28 10:23:54,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:23:54,171 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-09-28 10:23:54,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-28 10:23:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-09-28 10:23:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 10:23:54,172 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:23:54,172 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-09-28 10:23:54,174 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:23:54,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:23:54,174 INFO L82 PathProgramCache]: Analyzing trace with hash 491282284, now seen corresponding path program 3 times [2018-09-28 10:23:54,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:23:54,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:23:54,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:54,176 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:23:54,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:23:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:54,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:23:54,505 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:23:54,520 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:23:54,530 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-28 10:23:54,530 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:23:54,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:23:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:54,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:23:54,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-09-28 10:23:54,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:23:54,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:23:54,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:23:54,921 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 16 states. [2018-09-28 10:23:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:23:55,261 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-09-28 10:23:55,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-28 10:23:55,268 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-28 10:23:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:23:55,269 INFO L225 Difference]: With dead ends: 30 [2018-09-28 10:23:55,269 INFO L226 Difference]: Without dead ends: 28 [2018-09-28 10:23:55,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:23:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-28 10:23:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-09-28 10:23:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-28 10:23:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-09-28 10:23:55,275 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2018-09-28 10:23:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:23:55,275 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-09-28 10:23:55,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:23:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-09-28 10:23:55,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-28 10:23:55,276 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:23:55,277 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-09-28 10:23:55,277 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:23:55,277 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:23:55,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1589732832, now seen corresponding path program 4 times [2018-09-28 10:23:55,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:23:55,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:23:55,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:55,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:23:55,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:23:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:55,435 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:23:55,435 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:23:55,444 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:23:55,455 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:23:55,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:23:55,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:23:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:55,989 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:23:55,989 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-28 10:23:55,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-28 10:23:55,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-28 10:23:55,990 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:23:55,990 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 20 states. [2018-09-28 10:23:56,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:23:56,862 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-09-28 10:23:56,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-28 10:23:56,862 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-09-28 10:23:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:23:56,863 INFO L225 Difference]: With dead ends: 35 [2018-09-28 10:23:56,863 INFO L226 Difference]: Without dead ends: 33 [2018-09-28 10:23:56,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:23:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-28 10:23:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-09-28 10:23:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-28 10:23:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2018-09-28 10:23:56,872 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2018-09-28 10:23:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:23:56,874 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2018-09-28 10:23:56,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-28 10:23:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2018-09-28 10:23:56,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-28 10:23:56,875 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:23:56,879 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-09-28 10:23:56,879 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:23:56,881 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:23:56,881 INFO L82 PathProgramCache]: Analyzing trace with hash 602818540, now seen corresponding path program 5 times [2018-09-28 10:23:56,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:23:56,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:23:56,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:56,883 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:23:56,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:23:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:57,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:23:57,139 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:23:57,147 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:23:57,161 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-28 10:23:57,162 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:23:57,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:23:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:57,834 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:23:57,834 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-09-28 10:23:57,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-28 10:23:57,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-28 10:23:57,835 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:23:57,835 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 24 states. [2018-09-28 10:23:58,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:23:58,437 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2018-09-28 10:23:58,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-28 10:23:58,438 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-09-28 10:23:58,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:23:58,439 INFO L225 Difference]: With dead ends: 40 [2018-09-28 10:23:58,440 INFO L226 Difference]: Without dead ends: 38 [2018-09-28 10:23:58,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:23:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-28 10:23:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-09-28 10:23:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-28 10:23:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-28 10:23:58,446 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2018-09-28 10:23:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:23:58,447 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-28 10:23:58,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-28 10:23:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-28 10:23:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-28 10:23:58,448 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:23:58,449 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-09-28 10:23:58,449 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:23:58,449 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:23:58,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1979239776, now seen corresponding path program 6 times [2018-09-28 10:23:58,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:23:58,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:23:58,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:58,451 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:23:58,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:23:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:58,619 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:23:58,619 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 [2018-09-28 10:23:58,627 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:23:58,655 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-28 10:23:58,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:23:58,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:23:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:23:59,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:23:59,241 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-09-28 10:23:59,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-28 10:23:59,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-28 10:23:59,242 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:23:59,242 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 28 states. [2018-09-28 10:23:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:23:59,858 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-09-28 10:23:59,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-28 10:23:59,859 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2018-09-28 10:23:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:23:59,860 INFO L225 Difference]: With dead ends: 45 [2018-09-28 10:23:59,860 INFO L226 Difference]: Without dead ends: 43 [2018-09-28 10:23:59,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:23:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-28 10:23:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-09-28 10:23:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-28 10:23:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-09-28 10:23:59,866 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 33 [2018-09-28 10:23:59,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:23:59,867 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-09-28 10:23:59,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-28 10:23:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-09-28 10:23:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-28 10:23:59,868 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:23:59,868 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-09-28 10:23:59,868 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:23:59,869 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:23:59,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1800695700, now seen corresponding path program 7 times [2018-09-28 10:23:59,869 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:23:59,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:23:59,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:59,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:23:59,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:23:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:00,075 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:00,075 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 [2018-09-28 10:24:00,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:00,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:00,582 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:00,583 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-09-28 10:24:00,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-28 10:24:00,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-28 10:24:00,584 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:00,584 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 32 states. [2018-09-28 10:24:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:01,408 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-09-28 10:24:01,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-28 10:24:01,409 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-09-28 10:24:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:01,410 INFO L225 Difference]: With dead ends: 50 [2018-09-28 10:24:01,410 INFO L226 Difference]: Without dead ends: 48 [2018-09-28 10:24:01,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-28 10:24:01,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-09-28 10:24:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-28 10:24:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-28 10:24:01,417 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2018-09-28 10:24:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:01,417 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-28 10:24:01,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-28 10:24:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-28 10:24:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-28 10:24:01,418 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:01,419 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-09-28 10:24:01,419 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:01,419 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1430989600, now seen corresponding path program 8 times [2018-09-28 10:24:01,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:01,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:01,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:01,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:01,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:01,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:01,696 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 [2018-09-28 10:24:01,707 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:24:01,731 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:24:01,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:01,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:02,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:02,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-09-28 10:24:02,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-28 10:24:02,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-28 10:24:02,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:02,291 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 36 states. [2018-09-28 10:24:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:02,808 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-09-28 10:24:02,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-28 10:24:02,809 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-09-28 10:24:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:02,809 INFO L225 Difference]: With dead ends: 55 [2018-09-28 10:24:02,810 INFO L226 Difference]: Without dead ends: 53 [2018-09-28 10:24:02,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-28 10:24:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-09-28 10:24:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-28 10:24:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-09-28 10:24:02,816 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2018-09-28 10:24:02,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:02,816 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-09-28 10:24:02,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-28 10:24:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-09-28 10:24:02,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-28 10:24:02,818 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:02,818 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-09-28 10:24:02,818 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:02,818 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:02,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1043842836, now seen corresponding path program 9 times [2018-09-28 10:24:02,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:02,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:02,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:02,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:02,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:03,001 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:03,001 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 [2018-09-28 10:24:03,009 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:24:03,043 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-28 10:24:03,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:03,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:04,119 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:04,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-09-28 10:24:04,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-28 10:24:04,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-28 10:24:04,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:04,121 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 40 states. [2018-09-28 10:24:04,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:04,792 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-09-28 10:24:04,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-28 10:24:04,792 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2018-09-28 10:24:04,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:04,793 INFO L225 Difference]: With dead ends: 60 [2018-09-28 10:24:04,793 INFO L226 Difference]: Without dead ends: 58 [2018-09-28 10:24:04,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-28 10:24:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-09-28 10:24:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-28 10:24:04,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-09-28 10:24:04,802 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 48 [2018-09-28 10:24:04,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:04,802 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-09-28 10:24:04,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-28 10:24:04,802 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-09-28 10:24:04,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-28 10:24:04,803 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:04,803 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-09-28 10:24:04,804 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:04,804 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:04,804 INFO L82 PathProgramCache]: Analyzing trace with hash -676496288, now seen corresponding path program 10 times [2018-09-28 10:24:04,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:04,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:04,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:04,805 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:04,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:05,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:05,488 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 [2018-09-28 10:24:05,497 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:24:05,539 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:24:05,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:05,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:06,498 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:06,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-09-28 10:24:06,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-28 10:24:06,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-28 10:24:06,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:06,500 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 44 states. [2018-09-28 10:24:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:07,778 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-09-28 10:24:07,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-28 10:24:07,778 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 53 [2018-09-28 10:24:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:07,779 INFO L225 Difference]: With dead ends: 65 [2018-09-28 10:24:07,779 INFO L226 Difference]: Without dead ends: 63 [2018-09-28 10:24:07,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-28 10:24:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-09-28 10:24:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-28 10:24:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-09-28 10:24:07,786 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 53 [2018-09-28 10:24:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:07,786 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-09-28 10:24:07,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-28 10:24:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-09-28 10:24:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-28 10:24:07,787 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:07,787 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-09-28 10:24:07,787 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:07,788 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:07,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1014218388, now seen corresponding path program 11 times [2018-09-28 10:24:07,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:07,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:07,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:07,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:07,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:08,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:08,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:08,017 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:24:08,034 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-28 10:24:08,035 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:08,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:08,777 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:08,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-09-28 10:24:08,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-28 10:24:08,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-28 10:24:08,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:08,780 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 48 states. [2018-09-28 10:24:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:09,775 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-09-28 10:24:09,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-28 10:24:09,775 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 58 [2018-09-28 10:24:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:09,776 INFO L225 Difference]: With dead ends: 70 [2018-09-28 10:24:09,776 INFO L226 Difference]: Without dead ends: 68 [2018-09-28 10:24:09,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-28 10:24:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-28 10:24:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-28 10:24:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2018-09-28 10:24:09,783 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 58 [2018-09-28 10:24:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:09,784 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2018-09-28 10:24:09,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-28 10:24:09,784 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2018-09-28 10:24:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-28 10:24:09,785 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:09,785 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-09-28 10:24:09,786 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:09,786 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:09,786 INFO L82 PathProgramCache]: Analyzing trace with hash -778386464, now seen corresponding path program 12 times [2018-09-28 10:24:09,786 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:09,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:09,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:09,787 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:09,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:10,388 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:10,388 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:10,396 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:24:10,422 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-28 10:24:10,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:10,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:11,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:11,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-09-28 10:24:11,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-28 10:24:11,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-28 10:24:11,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:11,070 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 52 states. [2018-09-28 10:24:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:11,896 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2018-09-28 10:24:11,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-28 10:24:11,897 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2018-09-28 10:24:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:11,898 INFO L225 Difference]: With dead ends: 75 [2018-09-28 10:24:11,898 INFO L226 Difference]: Without dead ends: 73 [2018-09-28 10:24:11,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-28 10:24:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-09-28 10:24:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-28 10:24:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2018-09-28 10:24:11,904 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 63 [2018-09-28 10:24:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:11,905 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2018-09-28 10:24:11,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-28 10:24:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2018-09-28 10:24:11,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-28 10:24:11,906 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:11,906 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-09-28 10:24:11,907 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:11,907 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash -130045460, now seen corresponding path program 13 times [2018-09-28 10:24:11,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:11,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:11,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:11,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:11,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:12,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:12,291 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 [2018-09-28 10:24:12,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:12,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:12,975 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:12,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-09-28 10:24:12,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-28 10:24:12,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-28 10:24:12,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:12,977 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 56 states. [2018-09-28 10:24:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:14,208 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-09-28 10:24:14,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-28 10:24:14,209 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 68 [2018-09-28 10:24:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:14,210 INFO L225 Difference]: With dead ends: 80 [2018-09-28 10:24:14,210 INFO L226 Difference]: Without dead ends: 78 [2018-09-28 10:24:14,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-28 10:24:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-09-28 10:24:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-28 10:24:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2018-09-28 10:24:14,216 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 68 [2018-09-28 10:24:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:14,216 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2018-09-28 10:24:14,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-28 10:24:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2018-09-28 10:24:14,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-28 10:24:14,218 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:14,218 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-09-28 10:24:14,218 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:14,218 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:14,218 INFO L82 PathProgramCache]: Analyzing trace with hash -415978656, now seen corresponding path program 14 times [2018-09-28 10:24:14,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:14,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:14,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:14,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:14,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:14,496 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:14,496 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 [2018-09-28 10:24:14,504 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:24:14,548 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:24:14,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:14,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:15,901 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:15,901 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-09-28 10:24:15,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-28 10:24:15,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-28 10:24:15,903 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:15,903 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 60 states. [2018-09-28 10:24:17,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:17,196 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-09-28 10:24:17,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-28 10:24:17,197 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 73 [2018-09-28 10:24:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:17,197 INFO L225 Difference]: With dead ends: 85 [2018-09-28 10:24:17,198 INFO L226 Difference]: Without dead ends: 83 [2018-09-28 10:24:17,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-28 10:24:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-09-28 10:24:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-28 10:24:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2018-09-28 10:24:17,204 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 73 [2018-09-28 10:24:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:17,207 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2018-09-28 10:24:17,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-28 10:24:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-09-28 10:24:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-28 10:24:17,208 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:17,208 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-09-28 10:24:17,208 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:17,208 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:17,209 INFO L82 PathProgramCache]: Analyzing trace with hash -2077592980, now seen corresponding path program 15 times [2018-09-28 10:24:17,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:17,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:17,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:17,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:17,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:17,915 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:17,915 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 [2018-09-28 10:24:17,922 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:24:17,948 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-28 10:24:17,949 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:17,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:18,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:18,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-09-28 10:24:18,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-28 10:24:18,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-28 10:24:18,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:18,631 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 64 states. [2018-09-28 10:24:20,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:20,024 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-09-28 10:24:20,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-28 10:24:20,025 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 78 [2018-09-28 10:24:20,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:20,025 INFO L225 Difference]: With dead ends: 90 [2018-09-28 10:24:20,026 INFO L226 Difference]: Without dead ends: 88 [2018-09-28 10:24:20,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:20,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-28 10:24:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-09-28 10:24:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-28 10:24:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-09-28 10:24:20,030 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 78 [2018-09-28 10:24:20,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:20,030 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-09-28 10:24:20,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-28 10:24:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-09-28 10:24:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-28 10:24:20,032 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:20,032 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-09-28 10:24:20,032 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:20,032 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:20,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1630745312, now seen corresponding path program 16 times [2018-09-28 10:24:20,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:20,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:20,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:20,033 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:20,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:20,404 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:20,404 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 [2018-09-28 10:24:20,417 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:24:20,439 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:24:20,439 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:20,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:21,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:21,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-09-28 10:24:21,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-28 10:24:21,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-28 10:24:21,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:21,415 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 68 states. [2018-09-28 10:24:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:23,141 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2018-09-28 10:24:23,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-28 10:24:23,141 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 83 [2018-09-28 10:24:23,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:23,142 INFO L225 Difference]: With dead ends: 95 [2018-09-28 10:24:23,142 INFO L226 Difference]: Without dead ends: 93 [2018-09-28 10:24:23,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-28 10:24:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-09-28 10:24:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-28 10:24:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-09-28 10:24:23,147 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 83 [2018-09-28 10:24:23,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:23,148 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-09-28 10:24:23,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-28 10:24:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-09-28 10:24:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-28 10:24:23,149 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:23,149 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-09-28 10:24:23,149 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:23,149 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:23,150 INFO L82 PathProgramCache]: Analyzing trace with hash -778790164, now seen corresponding path program 17 times [2018-09-28 10:24:23,150 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:23,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:23,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:23,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:23,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:24,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:24,215 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:24,223 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:24:24,252 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-28 10:24:24,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:24,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:25,414 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:25,414 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-09-28 10:24:25,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-28 10:24:25,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-28 10:24:25,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:25,417 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 72 states. [2018-09-28 10:24:27,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:27,310 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2018-09-28 10:24:27,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-28 10:24:27,310 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 88 [2018-09-28 10:24:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:27,311 INFO L225 Difference]: With dead ends: 100 [2018-09-28 10:24:27,311 INFO L226 Difference]: Without dead ends: 98 [2018-09-28 10:24:27,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-28 10:24:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-09-28 10:24:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-28 10:24:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2018-09-28 10:24:27,316 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 88 [2018-09-28 10:24:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:27,316 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2018-09-28 10:24:27,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-28 10:24:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2018-09-28 10:24:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-28 10:24:27,318 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:27,318 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-09-28 10:24:27,318 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:27,318 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:27,318 INFO L82 PathProgramCache]: Analyzing trace with hash 38689376, now seen corresponding path program 18 times [2018-09-28 10:24:27,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:27,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:27,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:27,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:27,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:27,685 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:27,685 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 [2018-09-28 10:24:27,693 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:24:27,722 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-28 10:24:27,723 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:27,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:28,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:28,995 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-09-28 10:24:28,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-28 10:24:28,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-28 10:24:28,998 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:28,998 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 76 states. [2018-09-28 10:24:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:31,163 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2018-09-28 10:24:31,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-28 10:24:31,163 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 93 [2018-09-28 10:24:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:31,164 INFO L225 Difference]: With dead ends: 105 [2018-09-28 10:24:31,164 INFO L226 Difference]: Without dead ends: 103 [2018-09-28 10:24:31,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:31,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-28 10:24:31,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-09-28 10:24:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-28 10:24:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-09-28 10:24:31,169 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 93 [2018-09-28 10:24:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:31,169 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-09-28 10:24:31,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-28 10:24:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2018-09-28 10:24:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-28 10:24:31,170 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:31,170 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-09-28 10:24:31,171 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:31,171 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:31,171 INFO L82 PathProgramCache]: Analyzing trace with hash 281420652, now seen corresponding path program 19 times [2018-09-28 10:24:31,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:31,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:31,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:31,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:31,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:31,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:31,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:31,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:31,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:32,968 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:32,968 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-09-28 10:24:32,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-28 10:24:32,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-28 10:24:32,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:32,972 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 80 states. [2018-09-28 10:24:35,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:35,476 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2018-09-28 10:24:35,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-28 10:24:35,477 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 98 [2018-09-28 10:24:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:35,478 INFO L225 Difference]: With dead ends: 110 [2018-09-28 10:24:35,478 INFO L226 Difference]: Without dead ends: 108 [2018-09-28 10:24:35,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-28 10:24:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-09-28 10:24:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-28 10:24:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2018-09-28 10:24:35,482 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 98 [2018-09-28 10:24:35,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:35,483 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2018-09-28 10:24:35,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-28 10:24:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2018-09-28 10:24:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-28 10:24:35,484 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:35,484 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-09-28 10:24:35,484 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:35,484 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:35,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2025971232, now seen corresponding path program 20 times [2018-09-28 10:24:35,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:35,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:35,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:35,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:35,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:36,059 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:36,059 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:36,067 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:24:36,091 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:24:36,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:36,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:38,679 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:38,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-09-28 10:24:38,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-28 10:24:38,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-28 10:24:38,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:38,682 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 84 states. [2018-09-28 10:24:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:41,403 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-09-28 10:24:41,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-28 10:24:41,403 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 103 [2018-09-28 10:24:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:41,404 INFO L225 Difference]: With dead ends: 115 [2018-09-28 10:24:41,404 INFO L226 Difference]: Without dead ends: 113 [2018-09-28 10:24:41,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-28 10:24:41,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-09-28 10:24:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-28 10:24:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2018-09-28 10:24:41,409 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 103 [2018-09-28 10:24:41,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:41,410 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2018-09-28 10:24:41,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-28 10:24:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2018-09-28 10:24:41,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-28 10:24:41,411 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:41,411 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-09-28 10:24:41,411 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:41,411 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:41,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1207497748, now seen corresponding path program 21 times [2018-09-28 10:24:41,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:41,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:41,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:41,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:41,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:41,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:41,856 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:41,874 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:24:41,910 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-28 10:24:41,910 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:41,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:43,023 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:43,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-09-28 10:24:43,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-28 10:24:43,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-28 10:24:43,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:43,028 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand 88 states. [2018-09-28 10:24:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:46,140 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-09-28 10:24:46,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-28 10:24:46,140 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 108 [2018-09-28 10:24:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:46,141 INFO L225 Difference]: With dead ends: 120 [2018-09-28 10:24:46,141 INFO L226 Difference]: Without dead ends: 118 [2018-09-28 10:24:46,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:46,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-28 10:24:46,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-09-28 10:24:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-28 10:24:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-09-28 10:24:46,147 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 108 [2018-09-28 10:24:46,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:46,148 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-09-28 10:24:46,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-28 10:24:46,148 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-09-28 10:24:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-28 10:24:46,149 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:46,149 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-09-28 10:24:46,149 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:46,149 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:46,149 INFO L82 PathProgramCache]: Analyzing trace with hash 649759072, now seen corresponding path program 22 times [2018-09-28 10:24:46,149 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:46,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:46,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:46,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:46,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:46,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:46,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:46,727 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:24:46,754 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:24:46,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:46,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:47,832 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:47,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-09-28 10:24:47,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-28 10:24:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-28 10:24:47,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:47,837 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 92 states. [2018-09-28 10:24:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:51,519 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2018-09-28 10:24:51,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-28 10:24:51,519 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 113 [2018-09-28 10:24:51,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:51,520 INFO L225 Difference]: With dead ends: 125 [2018-09-28 10:24:51,520 INFO L226 Difference]: Without dead ends: 123 [2018-09-28 10:24:51,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-28 10:24:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-09-28 10:24:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-28 10:24:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-09-28 10:24:51,525 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 113 [2018-09-28 10:24:51,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:51,526 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-09-28 10:24:51,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-28 10:24:51,526 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-09-28 10:24:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-28 10:24:51,526 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:51,527 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-09-28 10:24:51,527 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:51,527 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:51,527 INFO L82 PathProgramCache]: Analyzing trace with hash 60773484, now seen corresponding path program 23 times [2018-09-28 10:24:51,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:51,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:51,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:51,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:51,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:51,992 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:51,992 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 [2018-09-28 10:24:52,002 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:24:52,040 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-28 10:24:52,040 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:52,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:53,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:53,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-09-28 10:24:53,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-28 10:24:53,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-28 10:24:53,319 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:53,319 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 96 states. [2018-09-28 10:24:57,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:57,230 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2018-09-28 10:24:57,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-28 10:24:57,231 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 118 [2018-09-28 10:24:57,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:57,231 INFO L225 Difference]: With dead ends: 130 [2018-09-28 10:24:57,232 INFO L226 Difference]: Without dead ends: 128 [2018-09-28 10:24:57,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:57,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-28 10:24:57,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-09-28 10:24:57,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-28 10:24:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2018-09-28 10:24:57,237 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 118 [2018-09-28 10:24:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:57,237 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2018-09-28 10:24:57,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-28 10:24:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2018-09-28 10:24:57,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-28 10:24:57,238 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:57,239 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-09-28 10:24:57,239 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:57,239 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:57,239 INFO L82 PathProgramCache]: Analyzing trace with hash 293310688, now seen corresponding path program 24 times [2018-09-28 10:24:57,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:57,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:57,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:57,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:24:57,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:57,745 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:57,745 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:57,757 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:24:57,794 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-28 10:24:57,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:24:57,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:58,978 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:58,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-09-28 10:24:58,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-28 10:24:58,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-28 10:24:58,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:58,984 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 100 states. [2018-09-28 10:25:03,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:03,221 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2018-09-28 10:25:03,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-28 10:25:03,222 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 123 [2018-09-28 10:25:03,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:03,223 INFO L225 Difference]: With dead ends: 135 [2018-09-28 10:25:03,223 INFO L226 Difference]: Without dead ends: 133 [2018-09-28 10:25:03,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-28 10:25:03,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-09-28 10:25:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-28 10:25:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-09-28 10:25:03,228 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 123 [2018-09-28 10:25:03,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:03,228 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-09-28 10:25:03,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-28 10:25:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-09-28 10:25:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-28 10:25:03,229 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:03,229 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-09-28 10:25:03,229 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:03,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:03,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1977023724, now seen corresponding path program 25 times [2018-09-28 10:25:03,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:03,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:03,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:03,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:25:03,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:03,674 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:03,674 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:25:03,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:03,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:04,949 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:04,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-09-28 10:25:04,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-28 10:25:04,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-28 10:25:04,957 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:04,957 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 104 states. [2018-09-28 10:25:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:09,927 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2018-09-28 10:25:09,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-28 10:25:09,927 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 128 [2018-09-28 10:25:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:09,928 INFO L225 Difference]: With dead ends: 140 [2018-09-28 10:25:09,928 INFO L226 Difference]: Without dead ends: 138 [2018-09-28 10:25:09,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-28 10:25:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-09-28 10:25:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-28 10:25:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-09-28 10:25:09,934 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 128 [2018-09-28 10:25:09,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:09,934 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-09-28 10:25:09,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-28 10:25:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-09-28 10:25:09,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-28 10:25:09,935 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:09,936 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-09-28 10:25:09,936 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:09,936 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:09,936 INFO L82 PathProgramCache]: Analyzing trace with hash -231131040, now seen corresponding path program 26 times [2018-09-28 10:25:09,936 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:09,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:09,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:09,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:09,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:10,729 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:10,729 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 [2018-09-28 10:25:10,737 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:25:10,767 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:25:10,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:25:10,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:12,941 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:12,942 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-09-28 10:25:12,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-28 10:25:12,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-28 10:25:12,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:12,948 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 108 states. [2018-09-28 10:25:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:18,486 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2018-09-28 10:25:18,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-28 10:25:18,486 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 133 [2018-09-28 10:25:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:18,487 INFO L225 Difference]: With dead ends: 145 [2018-09-28 10:25:18,487 INFO L226 Difference]: Without dead ends: 143 [2018-09-28 10:25:18,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-28 10:25:18,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-09-28 10:25:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-28 10:25:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2018-09-28 10:25:18,490 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 133 [2018-09-28 10:25:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:18,491 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2018-09-28 10:25:18,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-28 10:25:18,491 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2018-09-28 10:25:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-28 10:25:18,491 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:18,491 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-09-28 10:25:18,492 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:18,492 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:18,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1458963820, now seen corresponding path program 27 times [2018-09-28 10:25:18,492 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:18,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:18,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:18,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:25:18,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:20,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:20,031 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:25:20,039 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:25:20,085 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-28 10:25:20,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:25:20,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:21,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:21,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-09-28 10:25:21,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-28 10:25:21,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-28 10:25:21,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:21,507 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand 112 states. [2018-09-28 10:25:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:27,619 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2018-09-28 10:25:27,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-28 10:25:27,619 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 138 [2018-09-28 10:25:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:27,620 INFO L225 Difference]: With dead ends: 150 [2018-09-28 10:25:27,620 INFO L226 Difference]: Without dead ends: 148 [2018-09-28 10:25:27,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:27,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-28 10:25:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-09-28 10:25:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-28 10:25:27,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2018-09-28 10:25:27,625 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 138 [2018-09-28 10:25:27,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:27,626 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2018-09-28 10:25:27,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-28 10:25:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2018-09-28 10:25:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-28 10:25:27,627 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:27,627 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-09-28 10:25:27,627 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:27,628 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:27,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1839955936, now seen corresponding path program 28 times [2018-09-28 10:25:27,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:27,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:27,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:27,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:25:27,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:28,118 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:28,118 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:25:28,128 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:25:28,164 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:25:28,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:25:28,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:29,981 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:29,982 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-09-28 10:25:29,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-28 10:25:29,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-28 10:25:29,990 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:29,990 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 116 states. [2018-09-28 10:25:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:36,382 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2018-09-28 10:25:36,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-28 10:25:36,382 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 143 [2018-09-28 10:25:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:36,383 INFO L225 Difference]: With dead ends: 155 [2018-09-28 10:25:36,383 INFO L226 Difference]: Without dead ends: 153 [2018-09-28 10:25:36,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:36,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-28 10:25:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-09-28 10:25:36,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-28 10:25:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2018-09-28 10:25:36,389 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 143 [2018-09-28 10:25:36,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:36,390 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2018-09-28 10:25:36,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-28 10:25:36,390 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2018-09-28 10:25:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-28 10:25:36,391 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:36,391 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-09-28 10:25:36,391 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:36,391 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:36,391 INFO L82 PathProgramCache]: Analyzing trace with hash 893677036, now seen corresponding path program 29 times [2018-09-28 10:25:36,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:36,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:36,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:36,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:25:36,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:37,045 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:37,045 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 [2018-09-28 10:25:37,053 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:25:37,101 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-28 10:25:37,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:25:37,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:38,739 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:38,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-09-28 10:25:38,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-28 10:25:38,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-28 10:25:38,750 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:38,751 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 120 states. [2018-09-28 10:25:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:46,030 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2018-09-28 10:25:46,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-28 10:25:46,031 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 148 [2018-09-28 10:25:46,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:46,032 INFO L225 Difference]: With dead ends: 160 [2018-09-28 10:25:46,032 INFO L226 Difference]: Without dead ends: 158 [2018-09-28 10:25:46,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-28 10:25:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-09-28 10:25:46,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-28 10:25:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-09-28 10:25:46,038 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 148 [2018-09-28 10:25:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:46,039 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-09-28 10:25:46,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-28 10:25:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-09-28 10:25:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-28 10:25:46,040 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:46,040 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-09-28 10:25:46,040 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:46,040 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:46,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1567987872, now seen corresponding path program 30 times [2018-09-28 10:25:46,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:46,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:46,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:46,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:25:46,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:46,579 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:46,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:25:46,587 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:25:46,637 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-28 10:25:46,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:25:46,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:48,433 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:48,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-09-28 10:25:48,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-28 10:25:48,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-28 10:25:48,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:48,443 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 124 states. [2018-09-28 10:25:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:56,650 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2018-09-28 10:25:56,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-28 10:25:56,651 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 153 [2018-09-28 10:25:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:56,651 INFO L225 Difference]: With dead ends: 165 [2018-09-28 10:25:56,651 INFO L226 Difference]: Without dead ends: 163 [2018-09-28 10:25:56,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-28 10:25:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-09-28 10:25:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-28 10:25:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2018-09-28 10:25:56,659 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 153 [2018-09-28 10:25:56,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:56,659 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2018-09-28 10:25:56,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-28 10:25:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2018-09-28 10:25:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-28 10:25:56,661 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:56,661 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-09-28 10:25:56,661 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:56,661 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:56,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168108, now seen corresponding path program 31 times [2018-09-28 10:25:56,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:56,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:56,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:56,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:25:56,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:57,418 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:57,418 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:25:57,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:57,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:59,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:59,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-09-28 10:25:59,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-28 10:25:59,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-28 10:25:59,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:59,332 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 128 states. [2018-09-28 10:26:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:08,640 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2018-09-28 10:26:08,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-28 10:26:08,640 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 158 [2018-09-28 10:26:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:08,641 INFO L225 Difference]: With dead ends: 170 [2018-09-28 10:26:08,642 INFO L226 Difference]: Without dead ends: 168 [2018-09-28 10:26:08,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:08,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-28 10:26:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-09-28 10:26:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-28 10:26:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2018-09-28 10:26:08,648 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 158 [2018-09-28 10:26:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:08,649 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2018-09-28 10:26:08,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-28 10:26:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2018-09-28 10:26:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-28 10:26:08,650 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:08,650 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-09-28 10:26:08,650 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:08,650 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:08,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1450316064, now seen corresponding path program 32 times [2018-09-28 10:26:08,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:08,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:08,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:08,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:08,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:09,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:09,274 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 [2018-09-28 10:26:09,280 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:26:09,319 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:26:09,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:26:09,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:11,043 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:11,043 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-09-28 10:26:11,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-28 10:26:11,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-28 10:26:11,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:11,058 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand 132 states. [2018-09-28 10:26:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:20,785 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2018-09-28 10:26:20,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-28 10:26:20,785 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 163 [2018-09-28 10:26:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:20,786 INFO L225 Difference]: With dead ends: 175 [2018-09-28 10:26:20,786 INFO L226 Difference]: Without dead ends: 173 [2018-09-28 10:26:20,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:20,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-28 10:26:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-09-28 10:26:20,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-28 10:26:20,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-09-28 10:26:20,793 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 163 [2018-09-28 10:26:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:20,793 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-09-28 10:26:20,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-28 10:26:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-09-28 10:26:20,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-28 10:26:20,794 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:20,794 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-09-28 10:26:20,795 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:20,795 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:20,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2138087700, now seen corresponding path program 33 times [2018-09-28 10:26:20,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:20,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:20,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:20,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:26:20,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:21,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:21,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:26:21,871 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:26:21,926 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-28 10:26:21,926 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:26:21,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:23,934 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:23,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-09-28 10:26:23,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-28 10:26:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-28 10:26:23,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:23,948 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 136 states. [2018-09-28 10:26:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:34,622 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2018-09-28 10:26:34,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-28 10:26:34,622 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 168 [2018-09-28 10:26:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:34,623 INFO L225 Difference]: With dead ends: 180 [2018-09-28 10:26:34,623 INFO L226 Difference]: Without dead ends: 178 [2018-09-28 10:26:34,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-28 10:26:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-09-28 10:26:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-28 10:26:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2018-09-28 10:26:34,628 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 168 [2018-09-28 10:26:34,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:34,629 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2018-09-28 10:26:34,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-28 10:26:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2018-09-28 10:26:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-28 10:26:34,630 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:34,630 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-09-28 10:26:34,630 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:34,630 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:34,631 INFO L82 PathProgramCache]: Analyzing trace with hash 359536224, now seen corresponding path program 34 times [2018-09-28 10:26:34,631 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:34,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:34,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:34,631 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:26:34,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:36,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:36,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:26:36,588 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:26:36,631 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:26:36,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:26:36,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:39,590 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:39,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-09-28 10:26:39,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-28 10:26:39,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-28 10:26:39,604 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:39,605 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 140 states. [2018-09-28 10:26:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:52,269 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2018-09-28 10:26:52,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-28 10:26:52,269 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 173 [2018-09-28 10:26:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:52,270 INFO L225 Difference]: With dead ends: 185 [2018-09-28 10:26:52,270 INFO L226 Difference]: Without dead ends: 183 [2018-09-28 10:26:52,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-28 10:26:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-09-28 10:26:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-28 10:26:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2018-09-28 10:26:52,276 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 173 [2018-09-28 10:26:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:52,277 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2018-09-28 10:26:52,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-28 10:26:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2018-09-28 10:26:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-28 10:26:52,278 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:52,278 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-09-28 10:26:52,278 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:52,278 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:52,278 INFO L82 PathProgramCache]: Analyzing trace with hash -400824468, now seen corresponding path program 35 times [2018-09-28 10:26:52,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:52,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:52,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:52,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:26:52,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:53,175 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:53,175 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 [2018-09-28 10:26:53,183 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:26:53,256 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-28 10:26:53,257 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:26:53,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:55,361 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:55,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-09-28 10:26:55,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-28 10:26:55,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-28 10:26:55,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:55,382 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand 144 states. [2018-09-28 10:27:09,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:27:09,092 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2018-09-28 10:27:09,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-28 10:27:09,092 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 178 [2018-09-28 10:27:09,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:27:09,093 INFO L225 Difference]: With dead ends: 190 [2018-09-28 10:27:09,093 INFO L226 Difference]: Without dead ends: 188 [2018-09-28 10:27:09,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:27:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-28 10:27:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-09-28 10:27:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-28 10:27:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2018-09-28 10:27:09,099 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 178 [2018-09-28 10:27:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:27:09,099 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2018-09-28 10:27:09,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-28 10:27:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2018-09-28 10:27:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-28 10:27:09,100 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:27:09,100 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-09-28 10:27:09,101 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:27:09,101 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:27:09,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1927470560, now seen corresponding path program 36 times [2018-09-28 10:27:09,101 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:27:09,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:27:09,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:09,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:27:09,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:10,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:27:10,018 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 [2018-09-28 10:27:10,025 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:27:10,085 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-28 10:27:10,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:27:10,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:27:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:12,784 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:27:12,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-09-28 10:27:12,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-09-28 10:27:12,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-09-28 10:27:12,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:27:12,802 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 148 states. [2018-09-28 10:27:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:27:27,811 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2018-09-28 10:27:27,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-28 10:27:27,811 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 183 [2018-09-28 10:27:27,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:27:27,812 INFO L225 Difference]: With dead ends: 195 [2018-09-28 10:27:27,812 INFO L226 Difference]: Without dead ends: 193 [2018-09-28 10:27:27,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:27:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-28 10:27:27,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-09-28 10:27:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-28 10:27:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2018-09-28 10:27:27,818 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 183 [2018-09-28 10:27:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:27:27,818 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2018-09-28 10:27:27,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-09-28 10:27:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2018-09-28 10:27:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-28 10:27:27,819 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:27:27,819 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-09-28 10:27:27,820 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:27:27,820 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:27:27,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759660, now seen corresponding path program 37 times [2018-09-28 10:27:27,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:27:27,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:27:27,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:27,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:27:27,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:29,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:27:29,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:27:29,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:29,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:27:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:32,115 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:27:32,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2018-09-28 10:27:32,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-09-28 10:27:32,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-09-28 10:27:32,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:27:32,134 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 152 states. [2018-09-28 10:27:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:27:47,964 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2018-09-28 10:27:47,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-28 10:27:47,965 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 188 [2018-09-28 10:27:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:27:47,965 INFO L225 Difference]: With dead ends: 200 [2018-09-28 10:27:47,965 INFO L226 Difference]: Without dead ends: 198 [2018-09-28 10:27:47,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:27:47,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-09-28 10:27:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-09-28 10:27:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-28 10:27:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2018-09-28 10:27:47,973 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 188 [2018-09-28 10:27:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:27:47,973 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2018-09-28 10:27:47,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-09-28 10:27:47,973 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2018-09-28 10:27:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-28 10:27:47,974 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:27:47,974 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-09-28 10:27:47,975 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:27:47,975 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:27:47,975 INFO L82 PathProgramCache]: Analyzing trace with hash -928758432, now seen corresponding path program 38 times [2018-09-28 10:27:47,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:27:47,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:27:47,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:47,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:47,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:49,705 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:27:49,706 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 [2018-09-28 10:27:49,714 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:27:49,759 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:27:49,760 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:27:49,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:27:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:52,180 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:27:52,180 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-09-28 10:27:52,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-09-28 10:27:52,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-09-28 10:27:52,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:27:52,207 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand 156 states. Received shutdown request... [2018-09-28 10:28:06,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-28 10:28:06,261 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-28 10:28:06,265 WARN L206 ceAbstractionStarter]: Timeout [2018-09-28 10:28:06,266 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.09 10:28:06 BoogieIcfgContainer [2018-09-28 10:28:06,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-28 10:28:06,267 INFO L168 Benchmark]: Toolchain (without parser) took 255690.17 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -347.1 MB). Free memory was 1.5 GB in the beginning and 959.3 MB in the end (delta: 503.8 MB). Peak memory consumption was 156.7 MB. Max. memory is 7.1 GB. [2018-09-28 10:28:06,269 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:28:06,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:28:06,270 INFO L168 Benchmark]: Boogie Preprocessor took 28.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:28:06,270 INFO L168 Benchmark]: RCFGBuilder took 377.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-28 10:28:06,271 INFO L168 Benchmark]: TraceAbstraction took 255229.78 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -347.1 MB). Free memory was 1.4 GB in the beginning and 959.3 MB in the end (delta: 482.6 MB). Peak memory consumption was 135.5 MB. Max. memory is 7.1 GB. [2018-09-28 10:28:06,275 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 377.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 255229.78 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -347.1 MB). Free memory was 1.4 GB in the beginning and 959.3 MB in the end (delta: 482.6 MB). Peak memory consumption was 135.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 44). Cancelled while BasicCegarLoop was constructing difference of abstraction (194states) and FLOYD_HOARE automaton (currently 68 states, 156 states before enhancement), while ReachableStatesComputation was computing reachable states (165 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 255.1s OverallTime, 40 OverallIterations, 38 TraceHistogramMax, 178.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 403 SDtfs, 10248 SDslu, 8992 SDs, 0 SdLazy, 9040 SolverSat, 1855 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5343 GetRequests, 2301 SyntacticMatches, 0 SemanticMatches, 3042 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 39 MinimizatonAttempts, 153 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 72.3s InterpolantComputationTime, 7649 NumberOfCodeBlocks, 7649 NumberOfCodeBlocksAsserted, 445 NumberOfCheckSat, 7571 ConstructedInterpolants, 3743 QuantifiedInterpolants, 9640585 SizeOfPredicates, 855 NumberOfNonLiveVariables, 6536 ConjunctsInSsa, 1634 ConjunctsInUnsatCore, 78 InterpolantComputations, 2 PerfectInterpolantSequences, 1/92873 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-28_10-28-06-287.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-28_10-28-06-287.csv Completed graceful shutdown